INSTRUCTION MANUAL
COMMUNICATIONS RECEIVER
iC- r8500
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TABLE OF CONTENTS
IMPORTANT ............................................................. i
EXPLICIT DEFINITIONS .......................................... i
PRECAUTIONS ........................................................ i
UNPACKING............................................................. i
TABLE OF CONTENTS ............................................ ii
8 SET MODE ..........................................................30
IGeneral ......................................................................30
IQuick set mode items ................................................31
IInitial set mode items .................................................31
9 CONNECTOR INFORMATION......................33–34
1 PANEL DESCRIPTION .....................................1–6
IFront panel ...................................................................1
IRear panel ...................................................................5
IFunction display ...........................................................6
10 CONTROL COMMANDS ............................35–36
ICommand table .........................................................35
IData format ................................................................35
11 MAINTENANCE .................................................37
IDisassembly ..............................................................37
IFuse replacement ......................................................37
ILevel adjustments ......................................................37
IMemory backup .........................................................37
ICPU resetting ............................................................37
ICleaning .....................................................................37
2 CONNECTIONS ..............................................7–10
IMounting installation ....................................................7
IRequired connections ..................................................8
IAntenna connection .....................................................9
IGrounding ....................................................................9
ITape recorder connections ........................................10
ITransceive function ....................................................10
IConnecting to a PC ...................................................10
IData demodulation terminal .......................................10
12 OPTIONAL INSTALLATIONS .....................38– 39
IUT-102 VOICE SYNTHESIZER UNIT ................................38
IFL-52A CW NARROW FILTER ........................................38
ICR-293 HIGH STABILITY CRYSTAL UNIT .........................39
3 FREQUENCY SETTING ................................11–12
IRead me first..............................................................11
IUsing the keypad .......................................................11
IUsing the main dial ....................................................12
ILock function ..............................................................12
13 TROUBLESHOOTING .................................40–41
14 SPECIFICATIONS .............................................42
15 OPTIONS ...........................................................43
16 DOC ...................................................................44
4 RECEIVE FUNCTIONS .................................13–16
IInitial settings .............................................................13
IMode selection...........................................................13
ISquelch function ........................................................14
IFunctions for FM ........................................................14
IFunctions for SSB/CW ...............................................14
IData communications.................................................16
5 MEMORY CHANNELS ..................................17–22
IGeneral ......................................................................17
IBank selection ...........................................................17
IChannel selection ......................................................18
IProgramming .............................................................19
ICopy and paste (memory editing) ..............................19
IClearing .....................................................................19
IChannel/bank names .................................................20
IAssigning channels numbers .....................................21
6 SCANS ..........................................................23–28
IOperation ...................................................................23
IMode select function ..................................................25
ISpecifying skip channel and frequency .....................25
IAutomatic bank limit/skip functions............................26
IVoice scan control function ........................................26
IProgramming scan edge frequencies ........................27
IScan speed/delay functions .......................................27
7 SLEEP TIMER .....................................................29
ii
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1
PANEL DESCRIPTION
IFront panel
@
FM
+
+
S
1
3
5
7
9
20dB 60dB
POWER
q
w
SLEEP
LOCK
SIGNAL
BANK
NB AFC AGC-F APF-N
RECV
iC- r8500
SLEEP/ SET
10-ATT-20 ICOM
COMMUNICATION RECEIVER
REC
REMOTE
MODE
WFM
FM
AM
SSB/CW
20dB
TS
TS
e
r
REC OUT
PHONES
NB/AFC
AF GAIN
AGC
10dB
SQUELCH
APF
IF SHIFT
SPCH
LOCK
t
APF
yu
i
o
!
!
! ! !
qPOWER SWITCH [POWER]
Turns power ON and OFF.
uNOISE BLANKER/AFC SWITCH [NB]/[AFC]
Activates the noise blanker function or automatic fre-
quency control function.
•The noise blanker is used for removing pulse-type noise
when SSB, CW or AM mode is selected (p.15).
•The automatic frequency control tunes the displayed fre-
quency automatically when an off-center frequency is re-
ceived. It activates when FM or WFM is selected (p.14).
wSLEEP/SET SWITCH [SLEEP/SET]
➥Push momentarily to set the sleep timer (p. 29).
•Selectable times are 30, 60, 90, 120 min. or OFF.
•“
” appears in the function display when the
sleep timer is set.
➥Push for 1 sec. to enter quick set mode (p. 30).
•Use the [M-CH] selector and main dial to select items
and contents, respectively.
iAUDIO FREQUENCY GAIN CONTROL
[AF GAIN] (p. 13)
Rotate clockwise to increase the audio output; rotate
counterclockwise to decrease the audio output.
e
RECORDER REMOTE JACK [REC REMOTE] (p. 10)
Controls the running of a tape recorder for record-
ing. Connects to the REMOTE jack on a tape
recorder.
oAUTOMATIC GAIN CONTROL [AGC] (p. 15)
Toggles the time constant of the AGC circuit be-
tween “slow” and “fast.”
•When “fast” is selected, “AGC-F” appears.
•Cannot be used in FM or WFM modes.
rRECORDER JACK [REC OUT] (p. 10)
Outputs an audio signal. Connect to the AUX or
LINE IN jack on a tape recorder.
!SQUELCH CONTROL [SQUELCH] (p. 14)
Varies the squelch threshold level (to mute noise
when receiving no signal).
tHEADPHONE JACK [PHONES]
Accepts headphones with 4–16 Ω impedance.
•When headphonesareconnected, no receive audiocomes
from the speaker.
•Stereo headphones can be connected, however, output
is monaural.
S-meter squelch
threshold
• Signals below the
Noise squelch
S-meter level
threshold (not
are muted.
available in SSB,
CW, WFM and
yMODE SWITCHES [WFM]/[FM]/[AM]/[SSB/CW]
(p. 13)
➥Push to select an operating mode.
•The following keys toggle between several modes:
[FM] .................FM, FM narrow
AM narrow modes)
[AM] .................AM, AM narrow, AM wide
[SSB/CW] ........USB, LSB, CW, optional CW narrow
➥When SSB/CW mode is selected, push [SSB/CW]
for 1 sec. to adjust the BFO frequency. (p. 15).
!IF SHIFT CONTROL [IF SHIFT] (p. 14)
Shifts the center frequency of the receiver’s IF pass-
band to reject interfering signals.
•Cannot be used in FM, WFM and AM modes.
1
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PANEL DESCRIPTION 1
!
.
,
;
1
QZ
2 ABC
5 JKL
8 TUV
0
3 DEF
6MNO
9WXY
M-CH
OFF DLY
4 GHI
7 PRS
.
BANK
kHz
SEL-CH SKIP-CH
BANK
IC-R8500
M
ENT
CE
ENT
NAME
MEMO
PROG
SCAN/
SKIP
AUTO
PRIO
SCAN SET
DLY D/S
SEL
VSC
M-CH
DELAY/SPEED
M-SET
BANK
MW
M-CL
!
!
! !
•Automatic announcement at signal detection during
scan is available. Refer to the “REC SPCH” item on
p. 31 for details.
Center frequency
is shifted down.
Center frequency
is shifted up.
➥
Push for 1 sec. to activate the lock function (p.12).
•Push for 1 sec. again to cancel the lock function.
•The lock function action can be selected in set mode
to cover the main dial only, or to cover both the main
dial and front panel switches.
! AUDIO PEAK FILTER CONTROL [APF] (p. 15)
Adjusts the audio peak filter setting to pick up a de-
sired audio frequency. Only valid when the [APF]
switch is ON.
•Clockwise rotation adjusts the filter setting higher; coun-
terclockwise rotation adjusts the filter setting lower.
! TUNING STEP SWITCHES [TSL]/[TSM] (p. 12)
Select the tuning step for the main dial. Push [TSL]
to select a larger tuning step; push [TSM] to select
a smaller tuning step.
•10 Hz, 50 Hz, 100 Hz, 1 kHz, 2.5 kHz, 5 kHz, 9 kHz, 10
kHz, 12.5 kHz, 20 kHz, 25 kHz, 100 kHz and 1 MHz are
selectable.
•Programmable tuning steps can be set between 0.5 and
199.5 kHz.
! ATTENUATOR SWITCHES [10dB]/[20dB]
Push to activate one of the attenuators.
➧Push [10dB] to activate the 10 dB attenuator.
➧Push [20dB] to activate the 20 dB attenuator.
➧Push [10dB]+[20dB] to activate the 30 dB attenuator.
•10 dB and 30 dB attenuator cannot be used below 500 kHz.
➠To set programmable tuning steps, enter the desired
steps via the keypad, then push [TSY]or [TSZ].
! AUDIO PEAK FILTER SWITCH [APF] (p. 15)
➥Push momentarily to toggle the audio peak filter
circuit ON and OFF.
! MAIN DIAL
Changes the operating frequency, set mode contents,
etc.
•Use the [APF] control to adjust the center of the audio
peak passband.
! BRAKE ADJUSTMENT SCREW
Adjusts the main dial tension.
➥When the audio peak filter circuit is ON, push for
1 sec. to toggle the filter setting between normal
and narrow.
! FUNCTION DISPLAY (p. 6)
Shows the selected frequency, mode, memory
name, etc.
•‘Narrow’ is available for SSB, CW and AM only.
! SPEECH/LOCK SWITCH [SPCH/LOCK]
➥Push momentarily to activate the voice synthesiz-
er function and have the displayed frequency
announced.
@ S-METER
➥Shows the strength of the received signal.
➥Shows the squelch threshold level when the
[SQUELCH] is rotated past the center position.
•An optional UT-102 SPEECH SYNTHESIZER UNIT is nec-
essary to activate the voice synthesizer function (p.38).
2
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1
PANEL DESCRIPTION
FM
+
+
S
1
3
5
7
9
20dB 60dB
POWER
SLEEP
LOCK
SIGNAL
BANK
NB AFC AGC-F APF-N
iC- r8500
RECV
10-ATT-20 ICOM
SLEEP/ SET
COMMUNICATION RECEIVER
REC
REMOTE
MODE
WFM
FM
AM
SSB/CW
20dB
TS
TS
REC OUT
PHONES
NB/AFC
AF GAIN
AGC
10dB
SQUELCH
APC
IF SHIFT
SPCH
LOCK
APF
•When scan delay time is assigned, this control adjusts
the scan delay time (scan pausing interval) during signal
@ MEMORY SET SWITCH [M-SET] (p. 19)
Used to ‘copy and paste’ the displayed frequency
into another memory channel.
reception. This setting is effective when “
” is
selected for the scan resume condition.
•The first push is used to copy (
M
appears), and the sec-
•When scan speed is assigned, this control adjusts the
scan speed. In this case, scan delay time is determined
while setting.
M
ond push is used to paste ( disappears).
•Frequency, mode, tuning step, memory name, etc. can
be programmed into a temporary memory.
@ SCAN SWITCHES [SCAN
All of these switches are related to the scan function
in some way as follows:
]
@ MEMORY CLEAR SWITCH [M-CL] (p. 19)
Push and hold to clear the contents of the displayed
memory.
•Bank names cannot be cleared.
[MEMO] (p. 23)
➥Push momentarily to start/stop memory scan.
➥Push numeral keys, then this key to start memo-
ry scan in the specified bank.
➥Push this key, then a mode switch to activate
mode select scan function.
@MEMORY WRITE SWITCH [MW] (p. 19)
Push and hold to store the displayed frequency,
mode, tuning step, etc. into the selected memory
channel.
➥Push for 1 sec. to set automatic bank and skip
functions.
@ BANK SWITCH [BANK] (p. 17)
➥Push momentarily to toggle the bank limit func-
•The bank limit function and/or memory skip functions
are activated automatically when “AUTO” is selected
and scan is started.
tion ON and OFF (p.18).
•While “BANK” appears, only memory channels within
the selected bank can be selected via the [M-CH] se-
lector.
[SEL] (p. 23)
➥Push momentarily to start/stop memory select
➥Push for 1 sec. to increase/decrease the number of
memory channels in the selected bank (p. 21).
scan.
➥Push for 1 sec. to set the memory channel as a
select channel.
@ MEMORY CHANNEL SELECTOR [M-CH] (p. 18)
➥Selects a memory channel in normal use.
•Clockwise rotation selects higher memory channel
numbers; counterclockwise rotation selects lower
memory channel numbers.
➥Selects a set mode item when quick set mode or
initial set mode is selected (p.30).
[PROG] (p. 24)
➥
Push momentarily to start/stop programmed scan.
➥Push numeral keys, before or after pushing this
key to start programmed scan using the specified
scan edge group.
•10 scan edge groups are available.
➥Push for 1 sec. to program scan edges for pro-
grammed scan.
@ DELAY/SPEED CONTROL [DELAY/SPEED] (p. 28)
Adjusts the scan delay time or scan speed depend-
ing on the [DLY
] switch setting.
3
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PANEL DESCRIPTION 1
.
,
;
1
QZ
2 ABC
5 JKL
8 TUV
0
3 DEF
6MNO
9WXY
M-CH
OFF DLY
4 GHI
7 PRS
.
BANK
kHz
M
@
@
SEL-CH SKIP-CH
BANK
IC-R8500
ENT
CE
ENT
NAME
MEMO
PROG
SCAN/
SKIP
AUTO
PRIO
SCAN SET
DLY D/S
SEL
VSC
M-CH
DELAY/SPEED
M-SET
BANK
MW
M-CL
@ @
@ @
@
@
[SKIP] (p. 25)
➥Push momentarily to toggle the skip function ON
➧“ ” is underscored: scan is cancelled when receiving
a signal.
➥Push for 1 sec. to enter the delay time/scan speed
setting condition.
∞
and OFF for any scan.
•Automatic skip activation is available with the [MEMO]
switch.
•The function of the [DELAY/SPEED] control can be se-
lected.
➥Push for 1 sec. to set the memory channel as a skip
channel.
@ KEYPAD
[AUTO] (p. 24)
The keypad can be used for several functions as below:
•Keypad then [ENT] (then [MW])
—Direct frequency input.
•Keypad then [M-CH]
—Memory channel selection.
•[CE•NAME] then keypad
—Alphanumeric input for memory, bank names, etc.
•Keypad then [TSY] or [TSZ]
—Arbitrary tuning step setting.
•Keypad then [MEMO] or [SEL]
—Specify memory bank then start memory scan or se-
lect memory scan.
•Keypad then [PROG] or [AUTO]
—Specify scan edge group, then start programmed
scan or auto write scan.
➥Push momentarily to start/stop auto write scan.
➥Push for 1 sec. to select the written memories
condition for the auto write scan.
•Two conditions are available, clear auto-written mem-
ories before scan starts; and, keep auto written mem-
ories before scan start.
[VSC] (p. 26)
Push to toggle the voice scan control function ON
and OFF.
•The VSC function resumes the scan when a detected sig-
nal does not contain voice components.
•“VSC” appears while the voice scan control function is
activated.
[PRIO] (p. 25)
➥Push momentarily to start/stop priority scan.
•Priority scan can be used in combination with other
scans.
➥Push for 1 sec. to enter the priority channel pro-
gramming condition.
[DLY
] (p. 27)
➥Push momentarily to select a scan resume condi-
tion.
➧“OFF” is underscored: scan pauses on a signal until it
disappears, then resumes 3 sec. after that.
➧“DLY” is underscored: scan resumes according to the
[DELAY/SPEED] control setting. When a signal dis-
appears, scan resumes 3 sec. later.
4
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1
PANEL DESCRIPTION
IRear panel
q
w
e
r
t
y
u
i
!
!
o
uDC IN JACK (p. 8)
Connects the supplied* AC adapter.
•A regulator circuit has been designed between this con-
nector and the DC 13.8 V jack.
•Be sure the jumper connector is connected to the DC
13.8 V jack.
qRS-232C CONNECTOR (p. 10)
Connects an RS-232C cable. An RS-232C cable
can be used to connect the IC-R8500 to a PC. In this
way commands can be sent to the receiver via the
PC.
*Not supplied with some versions.
wCI-V REMOTE CONTROL JACK (p. 10)
Allows connection to an Icom CI-V system trans-
ceiver or another receiver for the transceive function.
Also connects to a PC with several receivers for
command control via an optional CT-17 CI-V LEVEL
CONVERTER.
iHF 50 Ω ANTENNA CONNECTOR (p. 8)
Connects an antenna to cover the frequency range
below 30 MHz.
•Use a coaxial cable and a PL-259 connector.
•Be sure this connector is selected in quick set mode
(p. 31).
eIF OUT JACK
Outputs a 10.7 MHz IF signal with 9 V DC for an ex-
ternal equipment.
oGROUND TERMINAL (p. 9)
Connect this terminal to a ground.
rAGC JACK (p.16)
This jack has functions which are selectable through
internal receiver settings.
•Outputs an AGC signal for an external equipment (de-
fault).
!HF 500 Ω ANTENNA CONNECTOR (p. 8)
When a 500 Ω long wire antenna is used for HF band
receiving, this connector is used instead of the 50 Ω
antenna connector.
•Set the “HF ANT” item to 500 to use this connector
(p. 31).
•Outputs audio detected signal without de-emphasis for
9600 bps data detection (FM mode only).
!VHF/UHF ANTENNA CONNECTOR (p. 8)
Connects an antenna to cover the frequency range
over 30 MHz.
tDC 13.8 V JACK (p. 8)
➥Plug in the jumper connector here when using the
supplied* AC adapter.
•Use a coaxial cable and type-N connector.
➥Connects to a 13.8 V DC power source using the
supplied DC cable when the AC adapter is not
connected.
*Not supplied with some versions.
yEXTERNAL SPEAKER JACK
Connects an 8 Ω external speaker.
•When an external speaker is connected, the internal
speaker does not function.
5
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PANEL DESCRIPTION 1
IFunction display
q
w
e r
t
y
OFF DLY
WIDE NAR
REMOTE
WFMAMUSBLSBCW
SKIP VSC
P
SLEEP
LOCK
@
u
@
@
MHz kHz
BANK
SEL-CH SKIP-CH
NB AFC AGC-F APF-N
10-ATT-20
RECV
M
@
@
!
@ !
!
!
!
! !
!
!
!
o
i
!SELECT CHANNEL INDICATOR (p. 23)
Appears when the selected memory channel is set
as a select channel.
qREMOTE INDICATOR (p. 35)
Appears when a level control command is received from a
PC via CI-V data.
•When this indicator appears, the control knob’s setting is
ignored.
•This indicator will disappear when the control knob is rotated.
!BANK NUMBER INDICATOR (p. 17)
Shows the selected memory bank number.
!BANK INDICATOR (p. 18)
wMODE INDICATORS (p. 13)
Show the operating mode.
➥Appears when the bank limit function is activated.
➥Flashes during scan when the bank limit function
is activated by the auto bank function.
eFREQUENCY READOUT
Shows the operating frequency.
!BANK NAME INDICATOR (p. 20)
Displays names programmed into a bank.
rSKIP INDICATOR (p. 25)
➥Appears when the skip function is activated.
➥Flashes during scan when the skip function is ac-
tivated by the auto skip function.
!AUDIO PEAK FILTER INDICATOR (p. 15)
“APF” or “APF-N” appears when the audio peak fil-
ter function is activated.
tVSC INDICATOR (p. 26)
Appears when the voice scan control function is
activated.
!ATTENUATOR INDICATORS
Appear when the RF attenuator is activated.
!AUTOMATIC GAIN CONTROL INDICATOR (p. 15)
AGC-F appears when AGC fast is selected; no indi-
cation appears when AGC slow is selected.
y
SCAN RESUME CONDITION INDICATORS (p. 27)
Show the selected scan resume condition.
uTUNING STEP INDICATORS (p. 12)
Show the selected tuning step.
!RECEIVE INDICATOR
Appears while receiving.
•
“
P
” appears when a programmable tuning step is selected.
@FM CENTER INDICATORS (p. 14)
Appear when the received signal is not tuned to its
center frequency.
iTEMPORARY MEMORY INDICATOR (p. 19)
➥Appears when [M-SET] is pushed to indicate that
a frequency is being temporarily saved.
➥Disappears when the temporary memory is past-
ed into another memory channel.
@NOISE BLANKER INDICATOR (p. 15)
Appears when the noise blanker circuit is activated.
oMEMORY CHANNEL READOUT (p. 17)
Shows the selected memory channel number.
@AFC INDICATOR (p. 14)
Appears when the automatic frequency control
function is activated in either FM or WFM modes.
!SKIP CHANNEL INDICATOR (p. 25)
Appears when the selected memory channel is set
as a skip channel.
@LOCK INDICATOR (p. 12)
Appears when the main dial or front panel switches
are locked.
!MEMORY NAME INDICATORS (p. 20)
Display names programmed into a memory, or scan
group.
@SLEEP INDICATOR (p. 29)
Appears when the sleep timer is set.
6
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2
CONNECTIONS
IMounting installation
DLocation
Select a location for the receiver that allows adequate
air circulation and access to the front and rear panels.
Do not place in areas subject to extreme heat, cold, or
vibrations, or near TV sets, radios and electromagnetic
sources.
Be careful of the internal temperature of the receiver.
Installation into a rack or other enclosed area may in-
crease the internal temperature over the useable tem-
perature range. Specifications are not guaranteed
under such conditions.
DReceiver stand
The base of the IC-R8500 has an adjustable stand for
desktop use. Set the stand to one of two angles de-
pending on your operating conditions.
DOptional bracket and carrying handle
•Mounting bracket
An optional mounting bracket is available to install the
radio under a table, on a wall, in a vehicle, etc.
•Carrying handle
An optional handle allows you to easily carry and
transport the receiver.
Attach the MB-23 CARRYING HANDLE with the supplied
rubber feet as shown.
Select an area to mount the receiver keeping in mind
that the weight of the IC-R8500 is approx. 7 kg.
CAUTION: The screws supplied with the MB-23
cannot be used with the IC-R8500. Use the screws
supplied with the IC-R8500 when attaching the
MB-23.
Flat washer
Spring
washer
Allen bolt
supplied with
the IC-R8500.
7
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CONNECTIONS 2
IRequired connections
Supplied DC power cable
External speaker
(p. 43)
IC-R8500
Connect
either power
source
Unplug the jumper plug
from the [DC13.8V] jack.
AC adapter AD-55/A/V
The jumper plug must be
connected to the [DC 13.8V]
jack.
Computer control
(p. 10)
High speed data
connection (p. 16)
Ground connection (p. 9)
VHF/UHF wide band
antenna
Long wire antenna
HF antenna
30 MHz –2 GHz coverage
0.1–30 MHz coverage
0.1–30 MHz coverage
The optional AH-7000 is
available for 25 MHz to 1.3
GHz coverage.
Select the active antenna connector in quick set mode (p. 31)
8
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2
CONNECTIONS
IAntenna connection
IGrounding
Antennas play a very important role in receiver opera-
tion. Connecting a poor quality antenna to the
IC-R8500 will result in less than optimum performance.
RWARNING: NEVER use a gas pipe or electri-
cal conduit pipe for grounding.
The IC-R8500 requires at least 2 antennas for full fre-
quency coverage: one for 0.1 to 30 MHz and one for
30 to 2000 MHz.
To prevent accidents involving electricity and interfer-
ence from transceivers, ground the receiver through
the [GND] terminal on the rear panel.
For best results, connect a heavy gauge cable to a
water pipe or long, earth-sunk copper rod. Make the
distance between the [GND] terminal and ground as
short as possible.
DUsing a long wire antenna for HF bands
The IC-R8500 has a 500 Ω phono (RCA) antenna
connector for the HF bands. When using a long wire
antenna, instead of a 50 Ω matched antenna, use one
as long as possible (at least 10 m, 33 ft) and select the
active connector as follows:
qPush [SLEEP/
] for 1 sec. to enter quick set
mode.
wRotate the [M-CH] selector to select the “HF ANT”
item.
e
Rotate the main dial to select the antenna connector.
rPush [SLEEP/
] momentarily to exit quick set
mode.
500
HF ANT
TYPE-N CONNECTOR INSTALLATION EXAMPLE
Nut
Rubber gasket
q
e
15 mm
Solder hole
Slide the nut, washer,
rubber gasket and
Soft solder the center
conductor. Install the
center conductor pin and
solder it.
clamp
over
the
Clamp
coaxial cable, then
cut the end of the
cable evenly.
No space
Washer
r
Carefully slide the plug
body into place aligning
the center conductor pin
on the cable. Tighten the
nut onto the plug body.
Plug body
3 mm 6 mm
w
Strip the cable and
fold the braid back
over the clamp.
Center conductor
• Be
sure
the
center
conductor is the same
height as the plug body.
(10 mm ≈ 3⁄8 in)
PL-259 CONNECTOR INSTALLATION EXAMPLE
q
e
r
30 mm
solder solder
Slide the coupling ring
down. Strip the cable
jacket and soft solder.
Slide the connector
body on and solder it.
Coupling ring
10 mm (soft solder)
w
Soft
10 mm
Strip the cable as
shown at left. Soft
solder the center con-
ductor.
Screw the coupling ring
onto the connector
body.
solder
1–2 mm
(10 mm ≈ 3⁄8 in)
9
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CONNECTIONS 2
ITape recorder connections
The [REC OUT] jack has 350 mV rms/4.7 kΩ output
for connection to other audio equipment.
IC-R8500
[REC
REMOTE]
SCAN SET
[REC OUT]
350 mVrms
4.7 kΩ
[AUX IN] or
[LIVE IN] jack
[REC REMOTE] jack:Grounds when a signal is
received and squelch opens. If a tape recorder has
a control terminal, this jack can be used for record-
ing control. (2 A/DC max.)
✔Convenient:
When an optional UT-102 VOICE SYNTHESIZER UNIT is
installed, detected frequencies during scanning can
be recorded. See pgs. 31, 32 for settings.
ITransceive function
*When a set frequency is out-of-range for one of the con-
nected transceivers or receivers, the connected radio’s
frequency/mode does not change.
Icom CI-V transceivers or receivers can be connect-
ed via the [REMOTE] jack. The frequency and mode
become the same* when either radio is changed.
Connect to [REMOTE] jack
•Be sure the “CIV TRAN” item is turned ON in initial set mode (p. 32).
IConnecting to a PC
The IC-R8500 can connect directly to a personal
computer providing control of multiple functions such
as instant frequency/name programming using
appropriate software. See pgs. 35, 36 for the control
command table.
IC-R8500
RS-232C
cable
3.TXD (data output)
2.RXD (data input)
1
8
13
A DB9/DB25 adapter may be
required depending on the PC’s
25
14
20
6
Personal computer
connector.
IData demodulation terminal
See p. 16 for details regarding connection and opera-
tion.
10
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3
FREQUENCY SETTING
IRead me first
The IC-R8500 uses memory channels for storage of
frequencies (as well as mode, tuning steps, etc.).
When turning power OFF or changing memory chan-
nels, the previously displayed frequency cannot be
recalled unless it has been stored into a memory
channel. Therefore, when you want to keep a dis-
played frequency for later recall, you must program it
into a memory channel by pushing [MW] for 1 sec.
Push [MW] for 1 sec. after tuning.
OFF DLY
✔Convenient:
FM
∞
Use [M-SET] to program a displayed frequency (and
its mode, etc.) without overwriting the currently select-
ed memory. See p. 19.
kHz
USR-A
BLANK
“BLANK” appears in the memory name area until
[MW] is pushed for 1 sec.
IUsing the keypad
qPush the numeral keys on the keypad to enter the
ePush the numeral keys to enter the frequency digits
MHz digits for the desired frequency.
below 1 MHz.
≈
≈
•If a key is mistakenly pushed, push [CE ] and start
•If a key is mistakenly pushed, push [CE ] and start
again from the beginning.
again from the beginning.
•When entering the same MHz digits as the displayed
frequency, this step can be skipped.
rPush [ENT] to set the input frequency.
•When pushing [ENT] after entering the MHz digits, zeros
are automatically entered for the kHz digits.
wPush [
Ω
].
•
[EXAMPLE]: SETTING THE FREQUENCY USING THE KEYPAD
• To set to 145.00 MHz
ENT
1
4
5
ENT
• To set to 1296.040 MHz
1
2
9
6
•
0
4
ENT
• To set to 850 kHz
(0.85 MHz)
0
•
8
5
ENT
• To change from 1296.040
to 1296.850 MHz
•
8
5
11
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FREQUENCY SETTING 3
IUsing the main dial
Rotate the main dial to change the frequency.
•The frequency changes in increments determined by the
selected tuning step (see below).
•When the lock function is activated (“LOCK” appears) the
frequency cannot be changed.
DSelecting a tuning step
13 preset tuning steps are available plus 1 programma-
ble tuning step (see below). The preset tuning steps are:
[TSY]
[TSZ]
10 50 100 Hz
SCAN SET
1
2.5 5
9
10 12.5 20
25 100 kHz
1 MHz
Push [TSY] or [TSZ] to change the selected tuning
step.
P
Tuning step
indicators
MHz kHz
DSetting the programmable tuning step
The programmable tuning step can be set between the
range of 0.5–199.5 kHz (in 0.5 kHz steps) for each
memory independently.
appears when the programmable tuning step
is selected.
P
qPush the numeral keys on the keypad that corre-
spond to the tuning step you wish to program.
wPush [TSY] or [TSZ] to set the programmable tun-
ing step to the selected value.
or
appears to indicate the units of
the selected tuning step.
MHz
kHz
•The programmable tuning step is automatically selected
as the active tuning step.
[EXAMPLE]: Setting the programmable tuning step to 50 kHz.
TS
5
0
TS
(or
)
P
kHz
kHz
kHz
ILock function
The lock function electronically locks the indicated fre-
quency from accidentally being changed.
DSetting the lock function coverage
The lock function can be set to lock the main dial only
or, the main dial and most of the front panel switches.
Push [SPCH
] for 1 sec. to toggle the lock func-
tion ON and OFF.
•“LOCK” appears in the function display while the lock
function is activated.
qPush [SLEEP
] for 1 sec. to enter quick set
mode.
wRotate the [M-CH] selector to select the “LOCK”
indication.
eRotate the main dial to set the lock function cover-
age to “DIAL” or “PANEL.”
OFF DLY
FM
∞
LOCK
kHz
rPush [SLEEP
] momentarily to exit quick set
*ICOM IC-R8500
mode.
OFF DLY
FM
∞
kHz
LOCK
DIAL
12
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4
RECEIVE FUNCTIONS
IInitial settings
Before turning power ON, set controls and switches as indicated below:
SCAN SET
[AF GAIN]: 10 o’clock
[APF]: center
[SQUELCH]: max. CCW
[IF SHIFT]: center
After turning power ON,
check the display for indications below and remove as follows:
Push [SLEEP]
OFF DLY
FM
∞
SLEEP
Push and hold
[SPCH • LOCK]
LOCK
kHz
BANK
NB AFC AGC-F APF-N
*ICOM IC-R8500
10-ATT-20
RECV
Push [NB/AFC]
Push [AGC]
Push [10dB] and/or [20 dB]
IMode selection
Push one of the mode keys one or more times to
select the desired mode. Consult the table below for
basic characteristics of each mode.
The indications in the table appear in the bank name
area for 1 sec. after an operating mode is selected.
INDICATION
MODE
BANDWIDTH
DESCRIPTION
Amateur bands, citizens band, utility communications, marine bands,
etc. FM-narrow can only receive narrow FM signals; normal FM can
receive both normal and narrow FM signals.
normal 12 kHz/–6 dB
narrow 5.5 kHz/–6 dB
medium 5.5 kHz/–6 dB
wide 12 kHz/–6 dB
narrow 2.2 kHz/–6 dB
FM
Broadcasting, amateur bands, citizens band, air band, etc. AM-wide
mode is used for clear audio reception. Signals however, may be
received with interference.
AM
SSB
USB
Shortwave broadcasting, amateur bands, etc. Use USB for normal
SSB reception; LSB is not normally used.
2.2 kHz/–6 dB
LSB
normal 2.2 kHz/–6 dB
Morse code communications. Use this mode to receive radio-tele-
type, etc. by shifting the receive frequency.
CW
narrow
500 Hz/–6 dB
(option)
TV broadcasting, FM broadcasting, etc. TV and FM broadcasting
cannot be accessed in FM mode because their signals are too wide.
150 kHz/–6 dB
WFM
13
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RECEIVE FUNCTIONS 4
ISquelch function
The IC-R8500 has 2 types of squelch, noise squelch
and S-meter squelch.
S-meter squelch
threshold
Noise squelch: Only acts on noise; has good sensi-
tivity. It can be adjusted for reception of weak signals.
Strong signals exceeding a certain level will always
cause the squelch to open.
• Signals below the
S-meter level
are muted.
Noise squelch
threshold (not
available in SSB,
CW, WFM and
AM narrow modes)
S-meter squelch: S-meter squelch does not open for
weak signals but can be adjusted to open for signals
over a wide range of strengths. Once you have
selected a threshold point in a range, the IC-R8500
will open for all signals above this point.
When [SQUELCH] is
rotated past center,
the S-meter shows
the signal strength
needed to open the
squelch.
+
+
S
1
3 5 7 9 20dB 60dB
To adjust the squelch, rotate [SQUELCH].
•Clockwise rotation closes the squelch (sets the threshold
point higher); counterclockwise rotation opens the
squelch (for reception of weak signals).
SIGNAL
IFunctions for FM
DCenter indicator
FM signals have a wide bandwidth which makes them
easy to receive. However, you may be tuned off-cen-
ter resulting in audio distortion. The IC-R8500’s off-
center indicators appear in such cases, making it
easy to fine tune to the center of the frequency.
RECV
One of these indicators appears when the received
signal is off-center.
DAFC
AFC stands for automatic frequency control. The AFC
circuit automatically compensates the tuning when a
receive frequency drifts or goes off frequency.
AFC
RECV
When one of the off-center indicators appears, the
IC-R8500 can adjust the receive frequency automat-
ically—when the AFC function is turned ON and an
off-center frequency is received, the frequency in the
display automatically changes to reflect the center of
the signal.
When one of these indicators appears, the
displayed frequency is automatically moved to the
center frequency.
IFunctions for SSB/CW
DIF shift
The IF shift function electronically changes the cen-
ter of the IF (intermediate frequency) passband fre-
quency to reject interference. The IF shift is not avail-
able in FM and AM modes.
APF
IF SHIFT
APF
IF SHIFT
APF
IF SHIFT
qAdjust the [SHIFT] control for a minimum interfer-
ence signal level.
•The audio tone may be changed while the IF shift is in
use.
wSet the shift control to its center position when
there is no interference.
Shifts low
Center
Shifts high
14
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4
RECEIVE FUNCTIONS
DNoise blanker
The noise blanker reduces pulse-type noise such as
that generated by automobile ignition systems. This
function is not effective for FM and WFM mode or for
non pulse-type noise and wide width pulses.
SCAN SET
[NB/AFC]
switch
Push [NB] to toggle the noise blanker ON and OFF.
•“NB” appears when the noise blanker is activated.
NOTE: When a strong signal is received while the
noise blanker is ON, the output audio may be dis-
torted. In such cases, the noise blanker should be
turned OFF.
NB OFF
NB ON
DAudio peak filter
The APF (audio peak filter) adjusts the peak fre-
quency of the received audio. The APF can be used
for adjusting the audio response. The IC-R8500 has
two selectable width filters.* Use the appropriate filter
width for optimum receiving.
[APF]
switch
SCAN SET
[APF] control
qPush the [APF] switch.
wRotate the [APF] control to adjust the peak fre-
quency.
APF is selected
APF-N is selected
[dB]
0
[dB]
0
–10
–20
–30
–40
–10
–20
–30
–40
eTo change the filter width*, push [APF] for 1 sec.
*Available for SSB, CW and AM only.
500
1k
2k
5k
[Hz]
500
1k
2k
5k
[Hz]
DBFO adjustment
BFO stands for beat frequency oscillator. This func-
tion is useful in conjunction with the IF shift function.
When eliminating interference with the IF shift func-
tion, the audio characteristics of the received signal
are often changed. Use the BFO adjustment function
to adjust the audio quality of the received signal to
that desired.
BFO
0.00kHz
SCAN SET
[SSB/CW]
switch
qPush [SSB/CW] to select SSB or CW mode.
wPush [SSB/CW] for 1 sec. to activate the function.
•BFO appears.
eRotate [M-CH] to adjust the BFO.
•–1.2 kHz to +1.2 kHz are selectable.
[M-CH]
selector
BFO shift can be set for USB,
LSB and CW separately.
DAGC function
AGC stands for automatic gain control. This function
controls receiver gain to produce a constant audio
output level even when the received signal strength
is varied by fading, etc. Use AGC slow for normal
phone operation; AGC fast for receiving data and
searching for signals. AGC time constant cannot be
changed in FM and WFM modes.
AGC-F
RECV
ICOM-
SCAN SET
[AGC]
switch
Push [AGC] to toggle between AGC fast and slow.
•AGC-F appears when AGC fast is selected; no indi-
cator appears when AGC slow is selected.
15
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RECEIVE FUNCTIONS 4
IData communications
DConnections
•For high speed data (9600 bps) reception in FM mode
[Audio IN] or
[Detector IN]
Rear
panel
to [AGC]
TU or TNC
RCA plug
Personal computer
•To use the [AGC] socket for AF output
Change the internal jumper plug as illustrated at
right.
AGC output
(default)
•The output is obtained for FM mode only.
•Usable for 9600 bps only.
•Refer to p. 37 for a description of opening the case.
AF direct detector
output
200 mVrms/4.7 kΩ
•For regular speed data (1200 bps or lower) reception in any mode
SCAN SET
AF IN
TU or TNC
to [REC OUT]
2-conductor 3.5(d) plugs
Personal computer
to [REC REMOTE]
SQUELCH IN
DReceiving method
qConnect a terminal unit as above.
wSelect FM mode (or USB, CW modes for HF band
data communications).
eSet the receiver to the desired frequency as below.
rSet the connected terminal unit to the appropriate
settings.
•Refer to the terminal unit’s instructions.
Frequency settings depend on the mode used.
FM mode: [Setting frequency(displayed freq.)]=[Desired freq.]
USB mode: [Setting frequency(displayed freq.)]=[Desired freq.]–[Center of Mark and Space freq.]
CW narrow mode: [Setting frequency(displayed freq.)]=[Desired freq.]–[Center of Mark and Space freq.]+[600 Hz]
LSB mode (for amateur RTTY): [Setting frequency(displayed freq.)]=[Desired freq.]+[Mark freq.]
16
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5
MEMORY CHANNELS
IGeneral
The IC-R8500 has 1000 regular memory channels,
plus 20 programmable scan edge channels and 1 pri-
ority channel. 8-digit memory names are programmed
into all 1000 channels and 5-digit bank names are
programmed into 20 user banks for convenient recall
and organisation of frequencies. Moreover, memory
channels can store mode information, a tuning step,
and ATT (attenuation) information.
NOTE: When memory channels without informa-
tion (blank channels) are selected, the frequency
is not displayed. Only the memory channel num-
ber appears.
The table below gives a general overview of the
IC-R8500’s memory channels.
BANK INITIAL CONTENTS
USAGE
For normal use. Frequency, mode, tuning step, name and ATT information can
be programmed. The number of channels in each bank is user-assignable.
Banks cannot be deleted (they must contain at least 1 channel).
40 memories×
20 banks
Frequencies detected during auto memory write scan are memorised into this
bank in sequence. Mode and tuning step are written at the same time. Note that
when the written memories condition is set as CL&START and auto write scan
is started, all memories in this bank are cleared.
100 memories
AUTO
SKIP
Undesired signals such as from beacons, control-coded signals, etc., can be pro-
grammed to be skipped during programmed scan and auto memory write scan.
When [MW] is pushed for 1 sec. while scan is paused, the displayed frequency
is programmed into this bank regardless of the selected bank.
100 memories
Blank
For temporary storage when assigning channels to banks. Deleted channels
(contents have been cleared) are stored in this bank until being assigned to
another bank. This bank does not appear when no channel are assigned.
FREE
PROG
Memorize scan edge frequencies. 10 pairs of scan edges (0P1 to 9P2) are pro-
20 memories (fixed) grammable (upper and lower scan edges). Mode and tuning step are automati-
cally equalised to the last programmed channel in a pair.
IBank selection
To select regular channel banks:
BANK
Push [M-CH•BANKL] or [ENT•BANKM], one or more
times to select the desired channel bank.
•The bank indicator shows the selected bank.
•Push and hold [BANKL] or [BANKM] to quickly cycle
USR-A
BLANK
BLANK
.
,
;
BANK
M-CH
USR-B
through the channel banks in the order
to
, FREE,
BANK
AUTO and SKIP.
BANK
NOTE: The FREE bank is initially blank and there-
fore cannot be selected. In order to select it at least
1 channel must be programmed into the FREE
bank. See p. 21.
USR-T
BLANK
BLANK
BLANK
BLANK
BANK
BANK
ENT
FREE
ENT
BANK
✔Convenient: Bank names
AUTO
The default names of “USR-A” to “USR-T” can be set
to your own preference. Refer to p. 20 for program-
ming.
BANK
SKIP
To select the programmed scan edge:
Push [PROG] for 1 sec.
•PROG and channel number (0P1 to 9P2) appear.
PROG *NONAME*
17
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MEMORY CHANNELS 5
IChannel selection
DUsing the [M-CH] selector
qSelect the desired bank using [M-CH•BANKL] or
[ENT•BANKM].
wRotate the [M-CH] selector to select the desired
channel.
[BANK ]
[BANK ]
•Bank limit function
While rotating the [M-CH] selector, memory channels
can be selected from within the current bank only; or
from any bank.
[M-CH] selector
Push [BANK] to toggle the bank limit function ON and
OFF.
✔Convenient: Automatic bank limit
When starting memory scan, the bank limit function
is activated automatically. This automatic selection
can be deactivated. See p. 26.
BANK
SR-
SR-
M
M
BANK doesn't
appear
BANK appears
•Bank limit OFF
•Bank limit ON
All memory channels can be Only memory channels in
selected via the [M-CH]
selector. [BANKL]/[BANKM
can be used.
the current bank can be se-
lected. Banks can be se-
lected with the
]
[BANKL]/[BANKM] keys
only.
DUsing the keypad
Memory channels in the current bank can only be
selected via the keypad.
qSelect the desired bank using [M-CH•BANKL] or
[ENT•BANKM].
wPush keys corresponding to the desired channel.
ePush the [M-CH] key to set the selected memory
channel.
•Input for memory channels not available is cancelled.
[M-CH] key
[EXAMPLE]: Selecting channel 39 from within the currently selected bank
.
,
;
M-CH
9WXY
3 DEF
BANK
USR-A ABCD
USR-A ABCD
USR-A EFGH
[EXAMPLE]: Selecting channel 12 from a different bank (bank 3)
.
,
.
,
;
;
M-CH
M-CH
1
QZ
2 ABC
BANK
BANK
(3 times)
USR-A EFGH
USR-D IJKL
USR-D MNOP
18
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5
MEMORY CHANNELS
IProgramming
This is the method most often used to program mem-
ory channels.
qSelect the desired memory channel.
wSet the desired frequency.
•
When the memory channel already contains information,
change the frequency using the main dial or the keypad.
•When the memory channel is blank, use keypad entry
only to set the frequency.
[MW] key
e
Set operating mode (p. 13) and tuning steps (p. 12).
rPush and hold [MW] until the receiver emits 3
beeps.
OFF DLY
FM
∞
kHz
•The information is stored in the memory channel.
USR-A
BLANK
NOTE: When changing the memory channel
before pushing [MW], the set frequency (and
mode/tuning steps) is erased.
MW
Push for 1 sec.
OFF DLY
FM
∞
kHz
USR-A
ICopy and paste (memory editing)
When the frequency (and mode/tuning steps) is set
for a channel; or, when you want to change a fre-
quency using the contents of another memory chan-
nel, the copy/paste function is helpful to keep (or con-
firm) the previously programmed contents.
NOTE: Remember that pushing [MW] is always
necessary to program contents into a memory
channel. Pasted contents will be cleared if the
[MW] key is not pushed for 1 sec.
qPush [M-SET] to temporarily store the displayed
frequency, mode, etc.
•“M” appears.
•Only 1 channel can be stored in the temporary space.
wSelect the memory channel you wish to program
the frequency into.
ePush [M-SET] again to paste the stored contents.
•“M” disappears.
[M-SET] key
IClearing
Information programmed into a memory channel can
be cleared (erased).
qSelect the memory channel to be cleared.
wPush and hold [M-CL] until the receiver emits 3
beeps.
✔Convenient: Bank assign function
Using the bank assign function, memory channels
can be removed (along with their programmed con-
tents) from a particular memory bank and placed
temporarily in the ‘free’ bank. See p. 21.
[M-CL] key
19
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MEMORY CHANNELS 5
IChannel/bank names
Channel names of up to 8 characters and bank names
of up to 5 characters can be programmed for conve-
nience. Programmed names can be easily copied to
other channels using the copy/paste function.
s
[CE • NAME] key
DChannel name programming
qSelect the desired memory channel.
wSet the frequency (and mode/tuning steps), then
push and hold the [MW] key.
•When no data is programmed, “BLANK” appears and
memory names cannot be programmed.
USR-A
USR-A
USR-A
CE
NAME
≈
ePush [CE •NAME].
•A cursor appears at the first character space of the
name area.
rEnter the desired name via the keypad.
•Push the appropriate keys to input the desired charac-
ters.
1 QZ
to
9WXY
•To erase a character, overwrite with a ‘space’ using the
[M-CH•
] key.
MEMONAME
Ω
•To move the cursor forwards or backwards, use the [• ]
BANK
≈
or [CE ] key.
ENT
tPush [ENT] to input the set name.
ENT
USR-A
MEMONAME
DBank name programming
qSelect the desired bank using [M-CH•BANKL] or
[ENT•BANKM].
wPush [CE •NAME].
•A cursor appears at the first character space of the
name area.
•When no data is programmed, (“BLANK” appears) the
cursor does not appear. Program a frequency or
change the channel in such cases.
USR-A
USR-A
USR-A
MEMONAME
MEMONAME
MEMONAME
≈
CE
NAME
Ω
.
ePush [• ] to move the cursor to the bank name
area.
5 times
rEnter the desired name via the keypad.
•Use the same method as for channel names (see
above).
1 QZ
to
tPush [ENT] to input the set name.
≈
NOTE: When using [CE ] on the last digit of the
9WXY
bank name, the current name is cleared and the
previous one is substituted. DO NOT forget to
push [ENT] after the bank name is set.
BANKN
BANKN
MEMONAME
MEMONAME
BANK
ENT
ENT
20
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5
MEMORY CHANNELS
IAssigning channel numbers
The IC-R8500 has 20 banks in which memory chan-
nels can be programmed and arranged. By default,
each bank contains 40 memory channels, however,
channels can be deleted from or added (inserted) to
banks to suit your preferences and operating style.
To rearrange bank channel assignments:
qDelete memory channels from banks that have
more memory channels than you need.
•Deleted channels are assigned to the ‘free’ bank auto-
matically.
wAdd (or insert) memory channels to banks in which
you want to add channels.
Deleted channels are stored temporarily in the
“FREE” bank.
•Channels added to a bank are deleted from the ‘free’
bank.
NOTE: When shipped from the factory or after
resetting the receiver’s CPU, the “FREE” bank has
no memory channels and cannot be selected.
[BANK] switch
[M-CH] control
DDeleting memory channels
qSelect the bank and memory channel you wish to
delete.
wPush [BANK] for 1 sec.
BANK
USR-T
BLANK
BANK
•One of “INS. 1CH,” “DEL. 1CH,” “ADD.10CH,” or
“ADD. 1CH,”appears and flashes.
•Push [BANK] momentarily to exit the condition and
return to the previous display, if desired.
eRotate [M-CH] until “DEL. 1CH” appears in the
display.
(for 1 sec.)
BANK
INS. 1CH
USR-T
M-CH
rPush [BANK] for 1 sec. to delete the selected
channel.
BANK
•The memory channel (but not its contents) is moved to
the “FREE” bank.
USR-T
DEL. 1CH
BLANK
BANK
Memory channels can only be deleted one at a
time to prevent accidental deletion of multiple
channels; when you want to delete more than
one channel from a bank, repeat the above
steps as many times as necessary.
(for 1 sec.)
BANK
USR-T
The number of channels in this bank is
decreased.
NOTE1: Deleted channels are moved to the
‘free’ bank, however, the programmed contents
are erased.
NOTE2: The number of banks cannot be
decreased. This means that if there is only one
channel in a bank, it cannot be moved to the
‘free’ bank.
21
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MEMORY CHANNELS 5
DAdding/inserting memory channels
qSelect the bank you wish to add memory chan-
nel(s) to.
wPush [BANK] for 1 sec.
•One of “INS. 1CH,” “DEL. 1CH,” “ADD.10CH,” or
“ADD. 1CH,”appears and flashes.
BANK
BANK
USR-T
BLANK
•Push [BANK] momentarily to exit the condition and
return to the previous display, if desired.
eRotate [M-CH] to select the following:
(for 1 sec.)
INDICATION
DESCRIPTION
BANK
1 channel will be inserted ‘in front’ of
the selected channel.
•Programmed contents after the inserted
channel are shifted accordingly.
M-CH
INS. 1CH
USR-T
INS. 1CH
Insert 1 channel
BANK
1 channel will be added ‘at the end’ of
the selected bank.
ADD. 1CH
USR-T
ADD. 1CH
ADD.10CH
Add 1 channel
10 channels will be added ‘at the end’
of the selected bank.
BANK
ADD.10CH
USR-T
rPush [BANK] for 1 sec. to perform the selected
operation.
•The memory channel(s) are deleted from the “FREE”
bank and added/inserted to the selected bank.
•Memory channels cannot be added/inserted into a
memory bank when the “FREE” bank is empty.
Add 10 channels
BANK
DEL. 1CH
USR-T
Delete channel
(see opposite page)
BANK
(for 1 sec.)
BANK
BLANK
USR-T
22
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6
SCANS
IOperation
DMemory scan
Select
Mch 3
All memory channels (except skip channels) in the
selected bank are scanned at up to 40 ch/sec.
Skip
Mch 2
Mch 4
qPush [M-CH•BANKL] or [ENT•BANKM] to select
the desired bank.
Mch 1
•Direct selection is also available as below.
wSet the [SQUELCH] control to the threshold point.
ePush [MEMO] to start the scan.
Select
Mch 5
Mch 39
Select
Mch 6
Mch 7
•“MEMO” appears in the bank name area.
Select
rPush [MEMO] again to stop the scan.
✔Convenient:
Direct bank selection—Memory scan can be started
in a specific bank without using [BANKL/M]:
➪Enter one or two digits for the bank number, then
push [MEMO].
Bank selection during memory scan—The selected
bank can be changed without stopping the scan:
➪Enter one or two digits for the bank number, then
push [ENT].
Push [MEMO]
OFF DLY
FM
∞
Bank limit and skip scan release—When starting
memory scan, the bank limit and channel skip functions
are activated automatically. Refer to p. 26.
kHz
MEMO
MEMO appears
DMemory select scan
Memory select scan allows you to increase scan effi-
ciency by searching for specified channels only,
thereby increasing the rate at which the scan cycles
through the memory channels. Set high priority chan-
nels as ‘select’ channels (memory select scan
searches for signals on these channels) while leaving
out lower priority channels.
Select
Mch 3
Skip
Mch 2
Mch 4
Mch 1
Select
Select
Mch 5
Mch 39
Select
Mch 6
Mch 7
Select
Preparation—specifying select channels:
Select the channel you want to specify as a ‘select’
channel, then push [SEL] for 1 sec.
Start/stop:
qSelect the desired bank using [M-CH•BANKL] or
[ENT•BANKM].
wSet the squelch control to the threshold point.
ePush [SEL] momentarily to start scan.
•“SEL” appears in the bank name area.
rPush [SEL] again to stop the scan.
Push [SEL]
NOTE:Memory select scan does not start unless
2 or more channels in the bank are specified as
select channels.
OFF DLY
FM
∞
kHz
✔Convenient:
SEL
The same convenient functions are available as de-
scribed above.
SEL appears
23
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SCANS 6
DProgrammed scan
Programmed scan (and auto memory write scan)
searches for signals within a specified frequency
range, using the selected tuning step increments. The
result is like an ‘automatic’ rotating of the main dial.
Programmed edges
Preparation—setting the scan range:
Push and hold [PROG] to enter the ‘prog’ bank, then
input the desired edge frequencies, mode and tuning
steps. Refer to p. 27 for details.
Start/stop:
qSet the [SQUELCH] control to the threshold point.
wPush [PROG] to start the scan.
•“PROG” (and scan range number) appears in the bank
name area.
ePush [PROG] again to stop the scan.
✔Convenient:
Push [PROG]
Direct range selection—The desired programmed
scan range can be selected using the keypad.
➪Push a numeral key before or after pushing the
[PROG] key.
OFF DLY
FM
∞
kHz
Skip scan release—Programmed scan skips all fre-
quencies specified as skip channels in all 1000 chan-
nels.
PROG0 *NONAME*
PROG appears
DAuto memory write scan
Auto memory write scan operates in the same way
as programmed scan. However, when a signal is
received, the received frequency is automatically
written into a memory channel in the auto write bank.
AUTObank
1234.567.00
1235.678.00
1235.890.00
1240.050.00
---------------
0
1
2
3
Preparation—written memories condition:
Push and hold [AUTO] to enter the written memory
setting condition, then rotate the main dial to select
the condition.
4
•
•
•
98
99
---------------
:Previously written memories
AUTO START
in the ‘Auto’ bank are saved, then frequencies are
written into the next available channels.
:Previously written mem-
AUTO CL&START
ories in the ‘Auto’ bank are cleared, then frequencies
are written into channels, starting from channel 0.
Start/stop:
qSet the [SQUELCH] control to the threshold point.
wPush [AUTO] momentarily or for 1 sec. to start the
scan.
•CAUTION:Be sure the written memories condition is set
as desired, otherwise previously written memories are
cleared.
•“AUTO” (and scan range number) appear in the bank
name area.
Push [AUTO]
OFF DLY
FM
∞
kHz
ePush [AUTO] again to stop the scan.
AUTO0 *NONAME*
AUTO appears
✔Convenient:
The same convenient functions are available as de-
scribed above.
24
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6
SCANS
DPriority scan
Priority scan monitors a specified frequency (the pri-
ority channel) once every 1–16 sec. (programmable)
during any operation, such as receiving, scanning
other channels, etc.
Start/stop:
Push [PRIO] to start/stop the scan.
•Priority scan can be used in combination with other scan
types: start another scan type during priority scan; or,
push [PRIO] while operating another scan.
Preparation—priority channel programming:
qPush [PRIO] for 1 sec.
•“*SET*” appears in the bank name area, then
changes to a flashing “PRIO.”
•Using this method, the priority channel can be called up
at any time with one push.
w
Set the desired frequency, mode and memory
name.
Priority scan
ePush [MW] for 1 sec. to write the contents into the
priority channel.
Programmed scan with priority scan
rPush [PRIO] again to return to the previous chan-
nel.
IMode select function
To operate memory scan or memory select scan in a
specific mode (ignoring other modes), the mode
select function is available.
Select
WFM
Skip
Mch 3
Mch 2
AM
Mch 4
FM
USB
qPush [MEMO] or [SEL] to start memory scan or
memory select scan, respectively.
wSelect the desired mode to operate the scan in via
the mode switches.
•The mode select function is applied to memory or mem-
ory select scan.
ePush [MEMO] or [SEL] again to stop the scan.
Mch 1
Select
Mch 5
USB
USB
USB
Mch 39
Select
Mch 6
FM
Mch 7
Select
ISpecifying skip channel and frequency
•Specifying skip channels
qSelect the memory channel to be specified as a
SKIP-CH
ICOM
IC-R8500
skip channel.
wPush [SKIP] for 1 sec. to toggle the setting ON and
OFF.
•SKIP-CH appears when ‘skip’ is set.
The channel is specified as a ‘skip’ channel.
•Programming skip frequencies
(for programmed scan)
OFF DLY
SKIP
∞
qStart programmed scan.
wWhen the scan pauses on an undesired signal,
push [MW] for 1 sec.
kHz
RECV
PROG0 IC-R8500
•The frequency is memorised into the skip bank as a
skip frequency.
Push [MW] for 1 sec. while programmed scan pauses.
•The specified channel is skipped during memory and
memory select scans.
•The programmed frequency is skipped during pro-
grammed and auto memory write scans.
25
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SCANS 6
IAutomatic bank limit/skip functions
When starting a scan, the following functions are
automatically turned ON by default; and the [SKIP]
and [BANK] switches are deactivated during scan.
•The bank limit function (for memory scan and select
memory scan)—The memory scan operates within
the selected bank only.
•The skip function (for any scan except priority
scan)—memory channels specified as skip chan-
nels are not checked during memory scan and
select memory scan; the frequencies which are pro-
grammed into memory channels as skip channels
(not only in the skip bank but any memory chan-
nels) during programmed scan and auto memory
write scan.
•Turning OFF the automatic function
qPush [MEMO] for 1 sec.
•A display as at right appears.
wRotate the [M-CH] selector to
select the item, SKIP or
BANK.
eRotate the main dial to select
the function AUTOor MANU-
AL.
rPush [MEMO] to return to the
previous display.
The skip function is turned ON automatical-
ly at scan start.
[SKIP] does not function during scan.
SKIP AUTO
SKIP MANUAL
BANK AUTO
The scan skip function is turned ON and
OFF by [SKIP] regardless of scan start.
The bank limit function is turned ON au-
tomatically at scan start.
[BANK] does not function during scan.
The bank limit function is turned ON and
OFF by [BANK] regardless of scan start.
BANK MANUAL
IVoice scan control function
This function is useful when you don’t want unmodu-
lated signals pausing or cancelling a scan. When
activated, the receiver checks received signals for
voice components.
VSC appears
OFF DLY
FM
VSC
∞
If a receiver signal includes voice components, and
the tone of the voice components changes within 1
sec., scan pauses (or stops). If the received signal
includes no voice components or the tone of the
voice components does not change within 1 sec.,
scan resumes.
kHz
ICOM- IC-R8500
Unmodulated
Modulated
signal
signal
To toggle the function ON and OFF, push [VSC].
•“VSC” appears while it is activated.
Scan edge 1
Scan
Scan edge 2
•The VSC function activates for any scan.
•The VSC function resumes the scan on unmod-
ulated signals even when the resume condition is
Scan pauses or is
cancelled.
Skip
set to “OFF” or “ ”.
∞
26
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6
SCANS
IProgramming scan edge frequencies
A set of scan edge frequencies must be programmed
before starting the programmed or auto memory
write scans. 10 pairs of scan edges are available:
0P1 to 9P2.
[
]
PROG
switch
qPush [PROG] for 1 sec.
•“*SET*” appears in the bank name area, then
changes to a flashing “PROG.”
wRotate the [M-CH] selector to select the lower
scan edge in a pair e.g. 0P1.
•The keypad can also be used for selection.
eSet the frequency, mode, tuning step and memory
name then push [MW] for 1 sec. to program one of
the scan edges.
rRotate the [M-CH] selector to select the other
edge in the pair e.g. 0P2.
[MW] switch [M-CH] selector
OFF DLY
AM
AM
∞
kHz
BANK
*NONAME*
PROG
OFF DLY
∞
t
•
y
Set the frequency then push [MW] for 1 sec. to program.
Mode, tuning step and name are common to both scan edges.
Push [PROG] momentarily to return to the previous
channel; or repeat w to y for other scan edges.
kHz
BANK
*NONAME*
PROG
IScan speed/delay functions
DScan resume condition
Scan pauses when finding a signal, and then resumes
or is cancelled depending on the selected scan
resume condition. There are 3 resume conditions.
OFF DLY
∞
Push [DLY] one or more times to select a resume
condition.
[
]
D/S
DLY
switch
•Scan resume OFF
Scan pauses until signal disap-
pears, then resumes 3 sec. after
that.
no signal
scanning
receiving a signal
pausing
no signal
OFF DLY
∞
Signal
Scan
scanning
3 sec.
•Scan resume ON with adjusted
delay period
Scan pauses for the adjusted
delay period after receiving a signal, then resumes.
When the received signal disappears, scan resumes
approx. 3 sec. after that.
no signal
scanning
receiving a signal
no signal
OFF DLY
∞
Signal
Scan
pausing
scanning
delay time
•Scan cancel
OFF DLY
Scan is cancelled when a signal
∞
no signal
scanning
receiving a signal
scan is cancelled
no signal
Signal
Scan
is found during scan.
27
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SCANS 6
DAssigning a function to the [DELAY/SPEED] control
The function of the [DELAY/SPEED] control is selec-
table, as shown below, to suit your operating style.
qPush [DLY
] for 1 sec. to enter the setting con-
Scan speed is assigned to the [DELAY/SPEED] control
dition.
wRotate the main dial to select the function for the
[DELAY/SPEED] control.
eWhen the scan speed is assigned to the
[DELAY/SPEED] control, the scan delay time is
determined while “VR:SPD DLY: 3S” appears.
•Rotate the [M-CH] selector to set the delay time.
VR:SPD
DLY= 3S
Adjustable
via the [M-CH]
selector
Toggle via the
main dial
VR:DLY
SPD=MAX
rPush [DLY
] to return to the previous display.
Scan delay is assigned to the [DELAY/SPEED] control
DScan speed
When scan speed is assigned to the [DELAY/SPEED]
control (see above), the scan speed can be instantly
updated during scan operation.
DELAY/SPEED
The name area shows as at right for 1 sec. after
rotating the control.
SPEED
Lowest scan speed: 1 ch/sec.
When scan delay time is assigned to the
[DELAY/SPEED] control, the scan speed is fixed
at the maximum of 40 ch/sec.
DELAY/SPEED
SPEED
Highest scan speed: 40 ch/sec.
DScan delay
The [DELAY/SPEED] control adjusts the scan delay
period (scan resume period) when:
DELAY/SPEED
•The scan delay function is assigned to the
[DELAY/SPEED] control (see above).
•“DLY” is selected for the scan resume condition with
DELAY
Shortest delay time: 3 sec.
the [DLY
] switch.
DELAY/SPEED
When scan speed is assigned to the
[DELAY/SPEED] control, the scan delay is deter-
mined by the set value of 3 to 18 sec.
DELAY
Longest delay time: 18 sec.
28
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7
SLEEP TIMER
The IC-R8500 has a sleep timer function to automati-
cally turn the power OFF after a specified period.
SET
[SLEEP/
] switch
DOperation
SLEEP
q
Push [SLEEP/
activate the sleep timer and set the power OFF period.
•When the sleep timer is activated, “ ” appears in
the display.
]
momentarily, several times, to
Minutes
SLEEP
•5 settings are available: 120, 90, 60, 30 min. and sleep
OFF.
Each push of
Minutes
SET
SLEEP/
after 2 sec.
w2 sec. after performing step q above, the receiver
SLEEP
returns to the previous display.
kHz
ICOM
IC-R8500
Previous display
Push
SET once
SLEEP/
eTo confirm the set sleep period, push [SLEEP/
]
momentarily, one time.
•Be careful not to push the switch more than once, other-
SLEEP
wise the sleep period may be changed.
Minutes
Set time
rTo turn ON the receiver after the sleep timer has
turned power OFF, push [POWER] OFF then ON
again.
•The sleep timer is cancelled.
29
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SET MODE
8
IGeneral
Set mode is used for programming infrequently
changed values or conditions of functions. The
IC-R8500 has 2 separate set modes: quick set mode
and initial set mode.
DSelecting quick set mode
Main dial (for contents)
qPush [SLEEP/
] for 1 sec.
•Quick set mode is selected and one of its items appears.
wRotate the [M-CH] control to select the desired item.
eRotate the main dial to set the values or conditions
for the selected item.
SCAN SET
rRepeat steps w and e to set other items.
tTo exit quick set mode, push [SLEEP/
] again.
•Pushing any other switch will also exit quick set mode.
[SLEEP/ SET ]
[M-CH]
(push for 1 sec.)
(for items)
[DISPLAY EXAMPLE: QUICK SET MODE]
OFF DLY
WFM
∞
kHz
DIMMER
HIGH
Value or
condition
Item
Item number
DSelecting initial set mode
qPush [POWER] to turn power OFF.
[POWER]
Main dial (for contents)
wWhile pushing [SLEEP/
] push [POWER] to turn
power ON.
•Initial set mode is selected and one of its items appears.
eRotate the [M-CH] control to select the desired item.
rRotate the main dial to set the values or conditions
for the selected item.
SCAN SET
tRepeat steps e and r to set other items.
yTo exit initial set mode, push [POWER] to turn
power OFF.
uPush [POWER] to turn power ON again.
•The conditions selected in initial set mode are now effec-
tive.
[SLEEP/
] at power ON
[M-CH]
(for items)
SET
[DISPLAY EXAMPLE: INITIAL SET MODE]
REC REMO
ON
Value or
condition
Item
Item number
30
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8
SET MODE
IQuick set mode items
DIMMER
This item toggles the intensity of the display back-
lighting between high or low.
HIGH
Bright backlighting
(default).
LOW
Dark backlighting.
BEEP
A beep sounds each time a switch is pushed for con-
firmation. This function can be turned OFF for silent
operation.
ON
Confirmation beeps
ON (default).
OFF
Confirmation beeps
OFF.
LOCK
This item sets the lock function to electronically lock
the main dial only or both the main dial and the panel
switches.
DIAL
Only the main dial
can be locked (default).
PANEL
Both the main dial and panel
switches can be locked.
AUTO TS
This item sets the auto tuning speed. The main dial ON
OFF
The auto tuning speed
function is OFF.
normally changes the frequency [400]×[tuning step]/
revolution. When auto tuning speed is turned on this
increases to [2000]×[tuning step]/revolution during
quick rotation of the dial.
The auto tuning speed
function is ON (default).
HF ANT
This item sets the active HF antenna connector on 50
500
The RCA (phono) connector
nector is activated (default). is activated.
the rear panel. Either the 50 Ω (SO-239 coaxial) or
500 Ω (phono RCA connector) can be activated.
The SO-239 antenna con-
IInitial set mode items
REC REMO
This item activates/deactivates the REC REMOTE
jack on the front panel. When ON is selected, the
[REC REMOTE] jack is at a “low” level when the
squelch opens via the internal relay.
ON
The REC REMOTE jack
can be used (default).
OFF
The REC REMOTE jack has
no function and no relay
switching sound is heard.
REC SPCH
When the optional UT-102 VOICE SYNTHESIZER is
installed and scan is in use, the detected frequency
is announced each time scan pauses, regardless of
the [SPCH/LOCK] switch. This announcement can
be turned ON and OFF.
ON
OFF
The optional voice synthe-
sizer activates via the
[SPCH] switch only.
The detected frequency is
announced when scan
pauses (default).
31
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SET MODE 8
SPCH LAN
When the optional UT-102 VOICE SYNTHESIZER UNIT is ENG
JPN
installed, you can select between English and
Japanese as the language.
Voice synthesizer functions Voice synthesizer functions
in English (default).
in Japanese.
SPCH SPD
When the optional UT-102 VOICE SYNTHESIZER UNIT is
installed, you can select between faster or slower
synthesizer output.
FAST
Voice synthesizer output
is faster (default).
SLOW
Voice synthesizer output
is slower.
CIV ADDR
To distinguish equipment, each CI-V transceiver/receiv-
er has its own Icom standard address in hexadecimal
code. The IC-R8500’s address is 4AH.
4AH
Address set to 4AH
(default).
01H
Address set to 01H.
When 2 or more IC-R8500’s are connected to an
optional CT-17 CI-V LEVEL CONVERTER, rotate the
main dial to select a different address for each IC-
R8500 in the range 01H to 7FH.
CIV BAUD
This item sets the data transfer rate. When “AUTO”
is selected, baud rate is automatically set according
to the connected controller or other Icom CI-V radio.
AUTO
Auto baud rate
(default).
19200
19200 bps
CIV TRAN
Transceive operation is possible with the IC-R8500
connected to an Icom CI-V radio. When “ON” is
selected, changing the frequency, operating mode,
etc. on the IC-R8500 automatically changes those of
connected radios and vice versa.
ON
Transceive ON
(default).
OFF
Transceive OFF.
CIV 731
When connecting the IC-R8500 to the IC-735 for
transceive operation, you must change the operating
frequency data length to 4 bytes.
•This item must be set to “ON” only when operating trans-
ceive with the IC-735.
OFF
Frequency data set to
5 bytes (default).
ON
Frequency data set to
4 bytes.
32
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9
CONNECTOR INFORMATION
DRS-232C socket
Pin
Port name
GND
Description
1
Grounded.
13
1
2
3
RXD
Input port for CI-V format data; +12V/–12V.
Output port for CI-V format data; +12V/–12V.
TXD
Shorten these ports inside.
Can be connected to pin 8 (DCD) via the inter-
nal circuit board (‘coffee beans’).
4
5
RTS
CTS
25
14
NC; can be connected to pin 20 (DTR) via the
internal circuit board (‘coffee beans’).
6
7
DSR
GND
DCD
NC
Grounded.
NC; can be connected to pins 4 and 5 (RTS/CTS)
via the internal circuit board (‘coffee beans’).
8
9–19
20
No connection.
NC; can be connected to pin 6 (DSR) via the
internal circuit board (‘coffee beans’).
DTR
NC
21–25
No connection.
DRemote jack
Pin
Port name
REMOTE
GND
Description
Input/output port for CI-V format data; +5 V/0 V.
Grounded.
Inner
Outer
Outer
Inner
3.5 mm (diam.) 2-conductor
DIF OUT jack
Pin
Port name
IF OUT
GND
Description
Frequency:10.7 MHz
Output level:–60 dBm (with –50 dBm input from
an antenna connector in WFM mode)
Inner
Outer
Inner
Outer
Grounded.
RCA (phono) jack
DAGC OUT jack
Pin
Port name
Description
Output voltage:1 to –2.4 V DC
(signal strength weak to strong)
Output impedance:2.2 MΩ
AGC out
Inner
Outer
Inner*
Output level:200 mV rms (at Mod.=1 kHz, Dev.=3.5 kHz)
Output impedance:4.7 kΩ
•Before the frequency de-emphasis stage.
RCA (phono) jack
Audio detect
GND
•Usable for FM only (not including WFM).
Outer
Grounded.
*Output is selectable with an internal jumper pin (p. 16).
DExternal speaker
Pin
Port name
AF out
Description
Output level:More than 2 W
Output impedance:4–8 Ω
Inner
Outer
Outer
Inner
GND
Grounded.
3.5 mm (diam.) 2-conductor
33
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CONNECTOR INFORMATION 9
•DC IN
Pin
DDC 13.8 V and DC IN sockets
Port name
DC IN
Description
Accepts connection to the AD-55A/V only
Grounded.
DC 13.8 V
DC IN
Inner
Outer
4
1
Inner
GND
•DC 13.8 V
Outer
Pin
Port name
Description
[POWER]
switch
1
13.8 IN
13.8 V DC input; current consumption 2 A
Internal
regulator
circuit
12.5 V DC output when connecting AD-55/A/V
to [DC IN] socket. Max. 2 A
2
12.5 OUT
Receiver
circuit
3
4
NC
—
GND
Grounded.
DREC REMOTE jack
Pin
Port name
SQL
Description
•Grounded when squelch opens.
•Can be deactivated via initial set mode. (p. 31)
•Max. current:1 A/12 V DC
Outer
Inner
Outer
Inner
3.5 mm (diam.) 2-conductor
GND
—
DREC OUT jack
Pin
Port name
DET
Description
•Output detected audio output.
•100–300 mV rms/4.7 kΩ
Inner
Outer
Outer
Inner
GND
Grounded.
3.5 mm (diam.) 2-conductor
DPHONES jack
Pin
Port name
Audio
Description
Inner,
Middle
•Outputs audio.
Outer
•Output impedance:4–16 Ω
Outer
GND
Grounded.
Inner
Middle
6 mm (diam.) 3-conductor
34
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10
CONTROL COMMANDS
The IC-R8500 can be connected to a PC via the PC’s
RS-232C port. This allows you to control the receiver
from the PC and/or transfer data from the receiver to
the PC.
ICommand table
Operation
Cn
Sc
Remark
Operation
Cn
Sc
Remark
10 Hz
50 Hz
100 Hz
00
01
02
Reading freq. edges
Reading operating freq.
Reading operating mode
02
03
04
—
—
—
Reading M-ch contents package
Reading bank name
1A
1A
01 add bn+mc*
03 add bn*
1 kHz
2.5 kHz
5 kHz
9 kHz
03
04
05
06
Reading squelch condition
Reading S-meter level
Reading model ID
15
01
02
00
19
05
Tuning step
10
10 kHz
12.5 kHz
20 kHz
25 kHz
100 kHz
07
08
09
10
11
Set frequency
add fd*
LSB
USB
0001
0101
AM
AM narrow
0202
0201
0203
1 MHz
programmable
12
13
AM wide
Set operating
mode
06
CW
0301
0302
OFF
00
10
20
30
CW narrow
10 dB
20 dB
30 dB
FM
FM narrow
WFM
0501
0502
0601
Attenuator
11
13
14
Voice
synthesizer
Memory channel selection
Bank selection
Memory write
08
08
09
—
A0
—
mc*
bn*
frequency
00
AF gain setting
01
03
04
05
add gd*
add gd*
add gd*
add gd*
Squelch level setting
IF shift setting
APF control setting
Set M-ch contents & write package 1A
Set bank name
Memory clear
00 add dt*
02 add bn+nd*
—
1A
0B
AGC OFF
AGC ON
10
11
Stop scan
00
Programmed scan start
Auto memory write scan start
02
04
note 1
note 1
NB OFF
NB ON
20
21
Memory clear
16
18
Memory scan start
Select memory scan start
Mode select scan start
22
23
24
note 2
note 2
note 2
APF OFF
APF ON
30
31
Power OFF (activating sleep)
Power ON (from sleep active)
00
01
Priority scan
42
0E
SEL-CH release
SEL-CH tag
B0
B1
Note 1: Only scan group 0 is usable.
Note 2: Use these commands after sending a bank or mode
command.
VSC deactivation
VSC activation
C0
C1
D0
D1
D3
Scan resume selection “
Scan resume selection “OFF”
Scan resume selection “DLY”
∞”
IData format
•Basic format from PC to IC-R8500
•Answer from IC-R8500 to PC
FE FE E0 4A Cn Sc Data area (e.g. fd) FD
FE FE 4A E0 Cn Sc Data area (e.g. fd) FD
35
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COMMAND LIST10
•‘OK’ message from IC-R8500 to PC
•‘NG’ message from IC-R8500 to PC
FE FE E0 4A FB FD
FE FE E0 4A FA FD
•Memory channel contents set & write (1A 00)
Bank
CH no.
Frequency
Mode(Sc) Tuning step ATT SCN
Memory name
FE FE 4A E0 1A 00 1 9 0 1 2 3 9 0 7 8 5 6 3 4 1 2 0 5 0 1 1 3 9 5 1 9 1 0 0 3 4 9 4 3 2 0 5 2 3 8 3 5 3 0 3 0 FD
I C - R 8 5 0 0
Scan skip and select channels
The above data packet is an example of programming
the following into memory channel 123 of bank num-
ber 19:
Comment
number
Scan select Scan skip
00
OFF
OFF
OFF
Specified
OFF
•Frequency:1,234,567,890 Hz
•Mode:FM
•Tuning step:199.5 kHz (programmable step)
•Attenuator:10 dB
01
02
Specified
Specified
03
Specified
•Scan select:specified
•Scan skip:specified
•Memory name:IC-R8500
•Clearing the specified channel data
•Special bank number and channels (bn)
(Memory channel contents set & write)
Special bank
FREE
Bank number
Remarks
FE FE 4A E0 1A 00 19 0 1 2 3 FF FD
20
21
22
23
24
•For programmed
scan, channel num-
bers are as follows:
0P1=00, 0P2=01,
1P1=02, 1P2=03,
etc., up to 9P1=18
and 9P2=19.
•There is only one
channel in the prior-
ity bank.
AUTO
SKIP
PROG
PRIO
•Gain and level data (gd; BCD data)
Max.
counterclockwise
0000
Max.
clockwise
0255
AF GAIN
SQUELCH
center
counterclockwise
0128
Max.
Max.
clockwise
0255
IF SHIFT
APF control
0000
36
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11
MAINTENANCE
IDisassembly
For internal maintenance and optional installations,
disassemble the receiver.
CAUTION: DISCONNECT the DC power cable
or AC adapter before performing any work on the
receiver.
qRemove 6 screws from the top of the receiver and
4 screws from its sides.
wCarefully lift up the top cover while disconnecting
the plug from the speaker cable.
eTurn the receiver upside down.
rRemove 6 screws from the bottom cover, then lift
up the bottom cover.
Speaker
cable
IMemory backup
IFuse replacement
All of the CPU’s memory is backed up by an EEP-
ROM (Electronically-Erasable Programmable Read-
Only Memory). All data you set, such as memory con-
tents, set mode contents, etc. is stored in this EEP-
ROM. There is no internal lithium battery.
If a fuse blows or the receiver stops functioning, try to
find the source of the problem, and replace the dam-
aged fuse with a new, rated fuse.
•For DC cable fuse
•For internal fuse
ICPU resetting
If the IC-R8500 is behaving erratically, this may be an
indication of a CPU malfunction. In such cases, reset
the CPU.
MAIN unit
(FGMB 125 V 3 A)
Fuse
While pushing [MW], push [POWER] in to turn on the
receiver power.
•The CPU is reset.
ILevel adjustments
NOTE: Resetting the CPU clears all memory con-
tents and returns internal settings to their factory
defaults.
R254
R252
ICleaning
If the receiver becomes dusty or dirty, wipe it clean
with a dry, soft cloth.
AVOID the use of strong chemical solvents such as
thinner, benzine or alcohol to clean the
receiver. These may damage the receiver’s
surfaces.
R252 adjusts the beep level
R254 adjusts the UT-102 output level
37
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OPTIONAL INSTALLATIONS
12
IUT-102 VOICE SYNTHESIZER UNIT
The UT-102 announces the accessed frequency in a
clear, electronically generated voice, in English (or
Japanese) when pushing [SPCH] or when a signal is
detected during scan (see p. 31, 32 for settings).
Under the top cover
qRemove the top cover as shown opposite.
wRemove the protected paper attached to the bot-
tom of the UT-102 to expose the adhesive strip.
eConnect the UT-102 as shown in the diagram at
right.
UT-102
J12
rReplace the top cover.
IFL-52A CW NARROW FILTER
The IC-R8500 has a CW narrow mode which pro-
vides better S/N (signal-to-noise) and also rejects
nearby interference. The CW narrow filter is helpful
when receiving CW and radio-teletype signals.
Under the top cover
qRemove the top cover as shown opposite.
wConnect the FL-52A as shown in the diagram at
right.
FL-52A
•Make sure it is connected in the proper orientation.
•Attached nuts on the FL-52A are not necessary. If you
want to install the filter more securely, open the MAIN
unit, then use the nuts on the bottom of the MAIN unit.
eReplace the top cover.
38
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12 OPTIONAL INSTALLATIONS
ICR-293 HIGH STABILITY CRYSTAL UNIT
A temperature-compensating crystal with a stability of
3 ppm is built-in to the receiver. For more demand-
ing operation, the CR-293 HIGH STABILITY CRYSTAL
UNIT is available. It has a stability of 0.5 ppm.
qRemove the bottom cover as shown on p. 37.
wRemove 6 screws from the metal plate, then
remove the metal plate and shield cover.
Metal plate
Shield
cover
PLL unit
CR-293
eRemove 10 screws from the PLL unit, then open
the unit to expose the bottom.
Internal
crystal
unit
rUnsolder the feet of the internal crystal unit, then
remove it.
tPlace the CR-293 in the space available as shown
in the diagram, then solder its feet into place (6
points).
yAdjust the reference frequency using a frequency
counter.
PLL unit
Ground
spring
uReplace the ground spring to its original position.
iReturn the shield cover, metal plate and bottom
cover to their original positions.
NOTE: The CR-293 is an oven-type crystal unit,
and the specified frequency stability described
above is guaranteed 1 min. after power ON.
39
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TROUBLESHOOTING
13
The following chart is designed to help you correct
problems which are not equipment malfunctions. If
you are unable to locate the cause of a problem or
solve it through the use of this chart, contact your
nearest Icom Dealer or Service Center.
PROBLEM
POSSIBLE CAUSE
SOLUTION
REF.
Power does not turn
ON when [POWER] is
pushed in.
• DC power cable is improperly con- • Reconnect the DC power cable se- p. 8
nected.
curely.
• A fuse is blown.
• Check for the cause, then replace the p. 37
fuse with a spare one.
• During AC adapter operation, the
•
Connect the jumper connector to the p. 8
jumper connector is not in use.
[DC13.8V] jack on the receiver’s rear panel.
• External 12 V DC is connected to the • Connect the external power source to p. 8
[DC IN] jack.
the [DC13.8V] jack. The [DC IN] jack ac-
cepts an AC adapter (AD-55/A/V) only.
Receiver turns OFF by • The sleep timer has been activated.
itself.
• Turn power back ON, then push p. 29
[SLEEP] one or more times to turn the
sleep timer function OFF, if desired.
No sound comes from • Volume level is too low.
the speaker.
• Rotate [AF GAIN] clockwise to obtain a
suitable listening level.
—
• The squelch is closed.
• Rotate [SQUELCH] counterclockwise to p. 14
open the squelch.
• An external speaker or headphones are • Disconnect the external speaker or
connected. headphones.
• CW narrow mode is selected when no • Select another mode or install the op- pgs.
—
optional filter is installed.
tional CW narrow filter.
13, 38
Sensitivity is low.
• The coaxial cable is cut.
• No antenna is connected.
• Fix the coaxial cable.
• Connect an antenna.
—
p. 8
• The connected antenna is not matched • Connect an antenna matched to the re- p. 8
to the receive frequency. ceiving frequency.
• Wrong antenna connector is used for • Check the antenna connection.
p. 8
V/UHF and HF antenna.
• Wrong antenna connector is selected in • Select the proper antenna connector: p. 31
set mode for HF antenna.
• An RF attenuator is activated.
SO-239 or phono (RCA).
• Push [ATT 10 dB] or [ATT 20 dB] to can-
cel the function.
—
Receive signal is un-
clear or distorted.
• [IF SHIFT] is rotated too far CCW or • Set [IF SHIFT] to the center position.
CW.
p. 14
• [APF] is rotated too far CCW or CW.
• The wrong mode switch is pushed.
•
Set the [APF] control to the center position p. 15
or push the [APF] switch to turn it OFF.
• Push the correct mode switch.
p. 13
WFM mode cannot be
set.
• The operating frequency is lower than • Set the frequency above 30 MHz when p. 13
30 MHz. (WFM mode cannot be se-
lected below 30 MHz.)
in WFM mode.
Main dial does not func- • The lock function is activated.
tion.
• Push [LOCK] for 1 sec. to deactivate.
p. 12
p. 31
[LOCK] does not lock
the keypad, function
switches, etc.
• DIAL LOCK is selected in quick set • Select PANEL LOCK in quick set
mode.
mode.
The selected frequency • The memory channel was changed be- • Push [MW] for 1 sec. to write into a p. 19
is erased.
fore writing into memory.
memory before changing channels.
The frequency is not
announced when push-
ing [SPCH].
• An optional UT-102 VOICE SYNTHESIZER • Install the UT-102.
UNIT is not installed.
p. 38
40
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13 TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSE
SOLUTION
REF.
Memory channels in
another bank cannot be
selected.
• The bank limit function is activated and • Push [BANK] to turn OFF the bank limit p. 18
“BANK” is indicated.
function or use [BANK] or [BANK] to se-
lect the bank.
Memory channels in the • Written memories condition is set as
p. 24
p. 20
• Change the setting to START.
‘AUTO’ bank are
CL&START.
cleared.
Bank name is erased
after setting.
• [CE
character.
s
] is pushed on the final name • Push [ENT] after setting the name.
Memory name cannot
be written.
• A frequency has not yet been pro- • Push [MW] for 1 sec. in advance.
grammed into the memory channel.
• [MW] key is used for name programming. • Push [ENT] after setting the name.
p. 19
p. 20
No scan will function.
• [SQUELCH] is open and [∞] is selected. • Turn [SQUELCH] CW until noise disap- p. 14
pears.
Programmed scan and
auto memory write scan
does not function.
• The same frequencies are programmed • Reprogram different frequencies into p. 27
into the selected scanning group.
scan edge channels or select a different
programmed scan group.
Memory scan does not
function.
• All channels are specified as “SKIP” • Turn OFF the automatic skip function or pgs.
channels in the selected bank.
release the “SKIP” setting for 2 or more 25, 26
channels in the selected bank.
• No memory channels have yet been • Program 2 or more channels in the se- p. 19
programmed in the selected bank. lected bank.
Select memory scan
does not function.
• Two or more “SEL-CH” are not specified • Set 2 or more channels as “SEL-CH” in p. 23
in the selected bank. the selected bank.
Auto memory write
scan does not function.
• All channels in the auto memory bank • Erase some or all of the channels in the p. 24
have been programmed. auto write bank.
Scan starts automati-
cally.
• The AFC function is activated and an • Push [AFC] to turn the AFC function p. 14
off-center signal is received in FM or
WFM mode.
OFF or wait until the center frequency is
selected.
41
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SPECIFICATIONS
14
IGeneral
•Frequency coverage
:
:
Version
Frequency Coverage (MHz)
0.10000– 823.99999
U.S.A.
849.00001– 868.99999
894.00001– 1999.99999*
Europe
France
0.10000– 1999.99999*
0.10000–
87.50000
108.00000– 1999.99999*
*Specifications guaranteed 0.1–1000 MHz and 1240–1300 MHz
•Mode
FM (normal/narrow), AM (wide/normal/narrow), SSB (USB/LSB) CW (normal/narrow*), WFM
*Optional FL-52A is required.
•Number of memory channels
•Antenna connector
:1000 (plus 20 scan edges and 1 priority channel)
:Below 30 MHz
Above 30 MHz
:–10°C to +50°C (+14°F to +122°F)
SO-239 (50 Ω)/Phono (500 Ω)
Type-N (50 Ω)
•Usable temperature range
•Frequency stability
:Below 30 MHz
Above 30 MHz
100 Hz ( 20 Hz*)
0.0003 % ( 0.00006%*)
*When an optional CR-293 is installed.
•Power supply requirement
•Current drain (at 13.8 V DC)
:13.8 V DC 15% (negative ground)
117 V AC (U.S.A. version with supplied AD-55A)
230 or 240 V AC (other versions with the optional AD-55/V)
:Standby 1.8 A
Max. audio 2.0 A
•Dimensions (projections not included) :287(W)×112(H)×309(D) mm; 115⁄16(W)×413⁄32(H)×123⁄16(D) in
•Weight
•Intermediate frequencies
:7.0 kg (15.4 lb)
:
Unit:MHz
Frequency band
1st
2nd
10.7
10.7
10.7
3rd*
0.455
0.455
0.455
0.1–
29.99999
48.8
30.0– 499.99999
500.0– 1024.99999
778.7
266.7
Utilizes converter method:
Local freq.:500, 1000 or 1010 MHz
1025.0– 1999.99999
*Except WFM.
IReceiver
•Receive system
•Sensitivity
:Superheterodyne
:
Frequency band (MHz) SSB/CW
AM
AM-N
—
AM-W
FM
—
WFM
0.1–0.49999
0.5–1.79999
1.0 µV
2.0 µV
0.25 µV
0.2 µV
0.2 µV
0.32 µV
0.32 µV
6.3 µV
13.0 µV
3.2 µV
2.5 µV
2.5 µV
2.5 µV
2.5 µV
—
—
—
—
—
—
—
—
—
—
—
—
1.8–1.99999
2.5 µV
2.0 µV
2.0 µV
—
2.0–27.99999
—
28.0–29.99999
30.0–999.99999
1240.0–1300.00000
0.5 µV
2.0 µV 3.2 µV 0.5 µV 1.4 µV
2.0 µV 3.2 µV 0.5 µV 2.0 µV
•Squelch sensitivity
:
SSB/CW/AM-N
AM/AM-W
FM
threshold
WFM
threshold
Frequency band
(MHz)
threshold
tight
threshold
tight
tight
tight
1.8–29.99999
10 µV 320 mV 0.5 µV 320 mV 0.5 µV* 320 mV*
—
—
30–1000
1240–1300
4.5 µV 320 mV 0.4 µV 320 mV 0.4 µV 320 mV 4.5 µV 320 mV
*FM mode can only be used above 28 MHz.
•Selectivity
:WFM
FM/AM-W
FM-N/AM
AM-N/SSB/CW
CW narrow*
More than 150 kHz/–6 dB
More than 12 kHz/–6 dB
More than 5.5 kHz/–6 dB
More than 2.2 kHz/–6 dB
More than 500 Hz/–6 dB
*Optional FL-52A is required.
•Spurious and image rejection ratio
:Below 30 MHz
30–1000 MHz
1240–1300 MHz
More than 60 dB
50 dB (typical)
•Audio output power
•IF shift variable range
•External speaker connector
:More than 2.0 W at 10% distortion with an 8 Ω load
:More than 1.2 kHz
:2-conductor 3.5 mm (1⁄8")/4–8 Ω
All specifications are subject to change without notice or obligation.
42
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15
OPTIONS
AH-7000
SP-21 EXTERNAL SPEAKER
SUPER WIDEBAND
OMNIDIRECTIONAL
ANTENNA
Frequency coverage:
Receive
25–1300 MHz
Transmit 50, 144, 430, 900,
1200 MHz bands
Designed for base station
operation.
Type of antenna: Discone
Weight: 1 kg
Input impedance: 8 Ω
Max. input power: 5 W
MB-23 CARRYING HANDLE
CT-17 CI-V LEVEL CONVERTER
Carrying handle, convenient for portable operation. Use
the screws supplied with the IC-R8500; DO NOT use the
screws supplied with the MB-23.
For remote control of up to 4 receivers from 1 PC. You can
set memory contents, including names, as well as read
data from the receivers.
AD-55/A/V AC ADAPTER
IC-MB12 MOBILE MOUNTING BRACKET
Provides AC operation.
(AD-55 Europe version only)
Receiver mounting bracket for mobile operation.
Not available in European countries due to local regulations.
CR-293 HIGH STABILITY CRYSTAL UNIT
Provides improved frequency stability.
•Frequency stability: 5 ppm (0°C–+60°C; 32°F–+140°F)
FL-52A CW NARROW FILTER
(455 kHz; 500Hz/–6 dB)
UT-102 VOICE SYNTHESIZER UNIT
43
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DOC
16
DECLARATION
OF CONFORMITY
We Icom Inc. Japan
1-1-32, Kamiminami, Hirano-ku
Osaka 547-0003, Japan
Düsseldorf 4th Aug. 2006
Place and date of issue
Declare on our sole responsibility that this equipment complies with the
essential requirements of the Radio and Telecommunications Terminal
Equipment Directive, 1999/5/EC, and that any applicable Essential Test
Suite measurements have been performed.
Icom (Europe) GmbH
Himmelgeister straße 100
D-40225 Düsseldorf
Kind of equipment:
Type-designation:
COMMUNICATIONS RECEIVER
Authorized representative name
iR8500
H. Ikegami
General Manager
Version (where applicable):
This compliance is based on conformity with the following harmonised
standards, specifications or documents:
i) Article 3.1a
ii) Article 3.1b
iii) Article 3.2
iv)
EN 60950-1: 2001
EN 301489-1 and EN 301489-15
EN 301 783-2
Signature
v)
44
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#23 EUR
<Intended Country of Use>
I GER I FRA I ESP I SWE
I AUT I NED I POR I DEN
I GBR I BEL I ITA
I FIN
I IRL
I LUX I GRE I SUI
I NOR
A-5395H-1EX-e
Printed in Japan
©1996–2006 by Icom Inc.
1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003, Japan
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|