Icom TV Receiver AT 140 User Manual

INSTRUCTION MANUAL  
HF AUTOMATIC  
ANTENNA TUNER  
AT-140  
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MISCELLANEOUS ITEMS  
TABLE OF CONTENTS  
The following parts are additionally required for instal-  
lation, but are not supplied with the AT-140.  
Purchase these parts locally.  
FOREWORD …………………………………………… i  
IMPORTANT …………………………………………… i  
EXPLICIT DEFINITIONS…………………………… i  
PRECAUTIONS ……………………………………… i  
SUPPLIED ACCESSORIES ………………………… i  
MISCELLANEOUS ITEMS ………………………… ii  
FEATURES …………………………………………… ii  
TABLE OF CONTENTS ……………………………… ii  
q AWG 14×4-conductor shielded cable  
*Icom offers an optional OPC-1147 CONTROL CABLE.  
Length: 10 m; 32.8 feet  
w 50 coaxial cable  
e PL-259 connectors  
FEATURES  
1 ANTENNA SYSTEM …………………………… 1–2  
I Antenna for ship ………………………………… 1  
I Antenna for land operation……………………… 1  
I Coaxial cable …………………………………… 2  
I Ground and counterpoise ……………………… 2  
Matches all bands  
The AT-140 matches any frequency on every HF ma-  
rine band. For example, the tuner matches a 7 m; 23 ft  
long-wire antenna across 1.630 MHz.  
2 INSTALLATIONS ………………………………… 3–5  
I lnstallation outline………………………………… 3  
I Control cable……………………………………… 3  
I PL-259 connector………………………………… 4  
I Mounting ………………………………………… 4  
I Cable connections ……………………………… 5  
Full automatic tuning  
Just push the [TUNE] switch on the transceiver, and  
the AT-140 adjusts immediately to the minimum SWR  
of any frequency on any HF marine band.  
HF operation on any size ship  
The AT-140 allows you HF operation where antenna  
element length is restricted due to space.  
3 CONTROL CABLE SIGNALS ………………… 6–7  
I Terminal information …………………………… 6  
I Transceiver setting ……………………………… 7  
Weather resistant  
The AT-140 is housed in a durable, completely weather  
resistant ASA case with a rubber gasket. The antenna  
tuner can be conveniently installed both on the deck or  
in the cabin near the antenna element.  
4 UNIT DESCRIPTION AND SPECIFICATIONS  
………………………………………………………… 8  
I Unit description…………………………………… 8  
I Specications …………………………………… 8  
Simple installation  
Installation is simple. Just connect the control and an-  
tenna cables. You never need to open the cover.  
45 memories for shorter tuning time  
To decrease the tune-up time, the AT-140 automatically  
stores the matching conditions for up to 45 frequencies.  
Re-tuning for a memorized frequency takes approx. 1  
sec.  
Super capacitor for memory backup  
Even if the AT-140 is not used for approx. 1 week, the  
built-in super capacitor backs up contents of the 45  
memories.  
Low power tune up  
The AT-140 emits low output power during tuning. This  
feature reduces the possibility of causing interference  
to other stations.  
Tuner through function  
The tuner through function is built into the AT-140. This  
function helps improve receiver gain, depending on the  
antenna element length used, and operating fre-  
quency.  
ii  
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1
ANTENNA SYSTEM  
I Antenna for ship  
Required antenna element length  
Required antenna element length to achieve full per-  
formance varies according to the lowest frequency:  
Insulator  
The lowest frequency Required antenna element length  
Backstay operates as  
a long-wire antenna.  
1.6 MHz band  
4 MHz band  
7 m; 23.0 feet or longer  
3 m; 9.8 feet or longer  
The longer the antenna element, the better the an-  
tenna efciency.  
Undesirable antenna element lengths  
AVOID multiples of 2λ (half wavelength) for an-  
tenna element lengths, since tuning becomes difcult.  
Insulator  
1
L : Antenna element length to be avoided [m]  
f : Operating frequency [MHz]  
n : Natural number (n = 1, 2, 3, ...)  
300  
f
1
2
L =  
n
×
×
Whip antenna  
[Example]  
At an operating frequency of 16 MHz, avoid the fol-  
lowing antenna element lengths:  
300  
16  
1
2
n
9.4, 18.8, ...  
×
×
L =  
1 m  
39 inches  
For example, if 15 m is selected for an antenna ele-  
ment length, you have no problem in the 1.625 MHz  
marine bands range.  
NOTE: Keep antennas as far away from other objects  
as possible, especially metal objects.  
I Antenna for land operation  
In some countries, HF transceivers can be used for  
land mobile operation. Ask your Icom Dealer for de-  
tails, since the radio law varies according to each  
country.  
Refer to the AH-2b instruction manual for the AH-2b  
and AT-140 installation to your vehicle. Ask your Icom  
Dealer for details.  
Connect a suitable antenna element for a base sta-  
tion. To achieve full performance, refer to Required  
antenna element lengthabove.  
For land mobile operation on 4 MHz and above, an  
optional AH-2b ANTENNA ELEMENT is available.  
The AH-2b includes a sturdy tow hook mount system  
for holding a 2.5 m; 8.2 feet stainless steel antenna  
element plus all the necessary hardware.  
AH-2b  
1
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ANTENNA SYSTEM  
1
I Coaxial cable  
Insulate the lead-in cable of the AT-140 antenna ter-  
minal and antenna element from other metal objects.  
To prevent erroneous indications, keep cables as far  
away as possible from the ux gate compass.  
To prevent interference, keep cables as far as possi-  
ble from an antenna, electric pump and other elec-  
tronic equipment.  
Use suitable noise filters for alternators, fluorescent  
lights, etc. Ask your Dealer for details.  
I Ground and counterpoise  
Why a ship’s ground is required  
The AT-140s ground terminal MUST be connected  
to your ships ground. Grounding prevents electric  
shocks, interference to other equipment and other  
problems. Grounding also ensures effective signal  
transmission.  
Counterpoise  
If your ship is made of FRP, etc. and a good ships  
ground is not available, connect a counterpoise.  
14λ radial for  
each band  
Ground terminal  
DANGER! NEVER connect the ground terminal to  
the following points. These connections may cause  
an explosion or electric shocks:  
Gas or electrical pipe  
Fuel tank or oil-catch pan  
AT-140  
IMPORTANT! The mounting plate is NOT con-  
nected to the AT-140s internal ground.  
14λ (quarter wavelength) radial for each band is suit-  
able for a counterpoise. Install the counterpoise di-  
rectly below the AT-140s ground terminal. Insulate  
the ends of each radial from other metal objects. Lay-  
out the radial horizontally and as straight as possible.  
Ideal ground points  
One of following points is ideal:  
External ground plate  
External copper screen  
External copper foil  
L : Counterpoise length for the operating frequency [m]  
f : Operating frequency [MHz]  
Good ground points  
If electrically connected to sea water, one of the fol-  
lowing points is usable:  
Stainless steel stanchion  
Through mast  
300  
f
1
4
L =  
×
[Example]  
At an operating frequency of 16 MHz, use a counter-  
poise with the following length:  
Through hull  
Metal water tank  
300  
16  
1
4
L =  
1 m  
4.7 [m]  
×
Undesirable ground points  
AVOID the following points, if possible. These con-  
nections may cause noise or electrolysis:  
Engine block  
39 inches  
Ground cable  
For best results, use the heaviest gauge wire or metal  
strap available. Make the distance between the AT-  
140s ground terminal and ships ground as short as  
possible.  
Ships DC battery ground  
Electrolysis  
All ground cables from the AT-140, HF transceiver,  
etc. on your ship should be connected to only 1 ships  
ground.  
Supplied ground cable can be used for ground con-  
nection to a through mast. Confirm that the through  
mast is electrically connected to sea water.  
AVOID connection to 2 or more points. Voltage dif-  
ference between 2 or more ships grounds may cause  
electrolysis.  
RWARNING!When grounding to metal hull  
Use a Zinc anode to protect the hull from electroly-  
sis.  
AVOID connection between dissimilar metals where  
an electric current is present. These connections may  
cause electrolysis.  
Ask your technical dealer, installer or refer to a tech-  
nical book, etc., for RF ground details.  
2
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2
INSTALLATIONS  
I Installation outline  
q Connect a control cable and 4-conductor shielded  
r Connect the control cable and the coaxial between  
the transceiver and the AT-140.  
cable.  
Refer to Control cablebelow.  
Refer to p. 5 Cable connections.”  
t Connect an antenna, ships ground or counter-  
w Connect and solder the PL-259 connector to the  
coaxial cable.  
poise.  
Refer to p. 1 Antenna for shipand p. 2 Ground and  
counterpoise.”  
Refer to p. 4 PL-259 connector.”  
e Mount the AT-140 in the desired location.  
Refer to p. 4 Mounting.”  
I Control cable  
Between the AT-140 and HF marine transceiver, con-  
nect 4 control signal lines as shown below. To prevent  
RF feedback, use a 4-conductor shielded cable. Con-  
nect the shield line to the [GND] terminal on the trans-  
ceiver. Icom offers 10 m (32.8 ft) long optional control  
cables as at right.  
OPC-566  
OPC-1147 : for IC-M802  
: for IC-M710/RT, M700PRO  
Refer to p. 6 Terminal informationfor details.  
D When connecting to Icom IC-M802  
To AT-140  
To transceiver  
Use the optional OPC-1147, or as-  
semble the desired length 4-con-  
ductor shielded cable and the con-  
nector kits supplied with the  
transceiver and the tuner.  
[E]  
: Black  
[E]  
: Black  
[13.6] : Red  
[STAR] : White  
[KEY] : Green  
[13.6] : Red  
[STAR] : White  
[KEY] : Green  
[GND]  
[GND]  
D When connecting to Icom IC-M710/RT, IC-M700PRO  
Use the optional OPC-566/1147  
(either the connector to the AT-140  
or the transceiver requires assem-  
bly), or assemble the desired length  
4-conductor shielded cable and the  
connector kits supplied with the  
transceiver and the tuner.  
To AT-140  
To transceiver  
[STAR] : White  
[KEY] : Green  
[E]  
: Black  
[13.6] : Red  
[STAR] : White  
[KEY] : Green  
[13.6] : Red  
[GND]  
[GND]  
[E]  
: Black  
D When connecting to Icom IC-M700/TY, IC-78  
To AT-140  
Use the optional OPC-1147 (this  
connector only requires assembly),  
or assemble the desired length 4-  
conductor shielded cable and the  
connector kits supplied with the  
transceiver and the tuner.  
To transceiver  
[E]  
: Black  
[E]  
: Black  
[13.6] : Red  
[STAR] : White  
[KEY] : Green  
[13.6] : Red  
[STAR] : White  
[KEY] : Green  
[GND]  
[GND]  
3
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INSTALLATIONS  
2
I PL-259 connector  
q Slide the coupling ring over the coaxial cable. Strip  
the cable jacket and pull back to reveal 10 mm of  
braid.  
e Slide the connector body over the cable and sol-  
der as shown below.  
Solder  
Solder  
Soft solder the exposed braid and then pull out the jacket.  
Coupling  
30 mm  
r Screw the coupling ring onto the connector body.  
10 mm (soft solder)  
w Strip the cable as shown below. Soft solder the cen-  
ter conductor the entire length of the exposed braid.  
12 mm  
10 mm  
38 inches  
soft solder  
10 mm  
I Mounting  
Attach the AT-140 either horizontally or vertically with  
one of the water drains facing downwards. After  
mounting, remove the screw in the water drain.  
Mounting on a at surface  
Using nuts and bolts  
Using self-tapping  
screws  
Mounting on a Mast/Metal pole  
Mast/  
Metal pole  
U-bolt  
Using U-bolts  
U-bolt plate  
Flat washer(L)  
Spring washer  
Flat washer(S)  
Nut  
Nut  
Flat  
washer(S)  
Spring  
washer  
Flat  
washer(L)  
WARNING: Mount the AT-140 securely with the  
supplied nuts and bolts. Otherwise, vibrations and  
shocks due to waves, etc. could loosen the antenna  
tuner making if fall, causing personal injury.  
Flat  
Weatherproof cap  
Drill a hole here  
Diameter:78 mm; 3216 inches  
washer(L)  
Hex head  
bolt  
9
5
4
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2
INSTALLATIONS  
I Cable connections  
q Connect the coaxial cable and the control cable to  
the AT-140 as illustrated below.  
r Connect the coaxial cable and the control cable to  
the transceiver as illustrated below.  
w Cover both the antenna and the control cable con-  
nectors with rubber vulcanizing tape and x it with  
a vinyl tape to prevent water seeping into the con-  
nector.  
t Ground the transceiver, AT-140 and shield cable of  
the control cable via the ground terminal.  
See pgs. 2 and 710 for grounding details.  
IMPORTANT!AT-140  
NEVER ground the AT140 via the mounting  
plate. It is not connected to ground internally.  
Rubber vulcanizing tape  
Ground terminal  
Mounting plate  
e Fix both of the coaxial and control cables to pro-  
tect the inside connections.  
DO NOT pull the antenna and control cable re-  
ceptacles. This may cause disconnection (in the  
AT-140), internal connector damaged or bad  
connection.  
Icom HF transceiver  
AT-140  
Ground  
Ground  
5
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3
CONTROL CABLE SIGNALS  
I Terminal information  
Consider the following points when using a non-Icom  
transceiver.  
Start voltage [STAR]  
When a start voltage (less than 1 V) is received, the  
AT-140 begins automatic tuning.  
Terminal  
Description  
More than  
350 msec.*  
[KEY]  
Key voltage. Grounded during tuning.  
Max. current drain 100 mA.  
Start  
voltage 8  
Approx. 7.5 V  
[13.6]  
13.6 V DC + input terminal.  
Max. current drain 2 A  
[V]  
6
4
[STAR] Receives start voltage.  
Max. current drain 1 mA  
Less than 1 V to  
2
start tuning  
0
[E]  
Ground terminal for above signals.  
Time  
*For tuner through operation; Less than 250 msec.  
Key voltage [KEY]  
During automatic tuning, the AT-140 grounds the key  
voltage line, and the HF transceiver reduces output  
power.  
During automatic tuning  
Key  
voltage 8  
Approx. 7.5 V  
[V]  
6
[KEY]  
[STAR]  
[13.6]  
[E]  
4
2
0
Time  
Grounded  
If the key voltage is more than 8 V, switch the mode  
switch (S1) to OFF mode (lower position).  
S1  
[E]  
[13.6]  
[STAR]  
[KEY]  
NORMAL mode  
OFF mode  
Mode switch (S1)  
6
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3
CONTROL CABLE SIGNALS  
I Transceiver setting  
IC-M700 with serial number 2500 and below  
IC-M710/RT, IC-M700PRO  
In the IC-M700, change the [TUNE] switch setting  
from the 1position to the 2position. Conrm that  
the [KEY] switch is in the 2position. Refer to the IC-  
M700 instruction manual p. 9 for details.  
In the IC-M710/RT and IC-M700PRO, select the an-  
tenna tuner type as AH-3*in initial set mode. See  
IC-M710/RT instruction manual p. 13 or IC-M700PRO  
instruction manual p. 11 for details.  
[KEY] [TUNE]  
IC-M802  
In the IC-M802, select the antenna tuner type as AT-  
140in initial set mode. See IC-M802 instruction man-  
ual p. 49 for details.  
Confirm 2position.  
Select 2position.  
Non-Icom HF transceiver  
Other IC-M700 and IC-M700TY  
Select correct settings for the start voltage and key  
voltage. Refer to your HF transceiver instruction man-  
ual for details.  
Nothing necessary to set. However, the tuner through  
function is not available when using the AT-140 with  
IC-M700/TY.  
NOTE: When a non-Icom automatic tuner was pre-  
viously used, confirm the tuner settings. Refer to  
the instruction manual for details.  
IC-78  
In the IC-78, select the antenna tuner type as 4* (AH-  
4)in initial set mode. See IC-78 instruction manual  
p. 32 for details.  
*With AT-130setting, use of the AT-140 is possible, how-  
ever, the tuner through function cannot be operated.  
7
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UNIT DESCRIPTION AND SPECIFICATIONS  
4
I Unit description  
13.4 in  
340 mm;  
80 mm; 3.1 in  
Mounting plate  
Ground terminal  
Water drain screw  
Antenna cable receptacle  
Control cable receptacle  
Antenna terminal  
Mounting plate  
91.5 mm; 3.6 in  
I Specications  
Frequency coverage  
Power supply requirement  
Current drain  
: 1.630 MHz (with 7 m; 23.0 feet or longer antenna element)  
: 13.6 V DC (supplied from HF transceiver)  
: Max. 2 A  
Operating temperature range  
Weight  
: 30°C to +60°C (22°F to +140°F)  
: 2.5 kg; 5.5 lb  
Antenna connector  
Max. Input power  
Automatic tuning time  
: SO-239 (50 )  
: 150 W (PEP)  
100 W (continuous)  
: Approx. 23 sec. (general condition) Max. 15 sec.  
Approx. 1 sec. (re-tuning for a memorized frequency)  
: SWR 2.0:1 (after tuning, except for multiples of 12 λ)  
Automatic tuning accuracy  
All stated specications are subject to change without notice or obligation.  
8
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Icom America Inc.  
Icom (Europe) GmbH  
<Corporate Headquarters>  
Communication Equipment  
Himmelgeister Str. 100,  
D-40255 Düsseldorf, Germany  
2380 116th Avenue N.E., Bellevue, WA 98004, U.S.A.  
Phone: (425) 454-8155 Fax: (425) 454-7619  
Phone: 0211 346047  
Fax: 0211 333639  
<Customer service>  
Phone: (425) 454-7619  
Icom Canada  
Icom Spain S.L.  
Glenwood Centre #150-6165 Highway 17, Delta,  
B.C., V4K 5B8, Canada  
Ctra. de Gracia a Manresa Km. 14,750 08190 Sant  
Cugat del Valles Barcelona, SPAIN  
Phone: (604) 952-4266 Fax: (604) 952-0090  
Phone: (93) 590 26 70  
Fax: (93) 589 04 46  
Icom (Australia) Pty. Ltd.  
Icom (UK) Ltd.  
A.C.N. 88 006 092 575  
Unit 9, Sea St., Herne Bay, Kent, CT6 8LD, U.K.  
290294 Albert Street, Brunswick, Victoria, 3056,  
Australia  
Phone: 01227 741741  
Fax: 01227 741742  
Phone: (03) 9387 0666 Fax: (03) 9387 0022  
Icom New Zealand  
Icom France S.a  
146A Harris Road, East Tamaki, Auckland, New Zealand  
Zac de la Plaine, Rue Brindejonc des Moulinais BP  
5804, 31505 Toulouse Cedex, France  
Phone: 09 274 4062  
Fax: 09 274 4708  
Phone: 561 36 03 03  
Fax: 561 36 03 00  
Asia Icom Inc.  
Beijing Icom Ltd.  
6F No. 68, Sec. 1 Cheng-Teh Road, Taipei, Taiwan R.O.C.  
Phone: (02) 2559 1899 Fax: (02) 2559 1874  
1035, Wanshang Plaza, Shijingshan Road, Beijing  
Chaina  
Phone: (010) 68666337 Fax: (010) 68663553  
A-6175H-1EX  
Printed in Japan  
© 2002 Icom Inc.  
1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003 Japan  
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