Telex Satellite Radio TR 16 User Manual

Telex  
Operating Instructions  
TM  
RadioCom  
Wireless IFB  
TT-16  
16 Channel Transmitter  
TR-16  
16 Channel Receiver  
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Whenever the system is in use, the transmitter  
should be left on to prevent the receiver from pick-  
ing up outside interference.  
OFTEN ASKED QUESTIONS  
Question: Can more than one system be used si-  
multaneously?  
Question: What is E.D.R.?  
Answer: Yes but never on the same frequency. You  
will need to have different frequencies for every re-  
ceiver/transmitter combination.  
Answer: E.D.R. stands for enhanced Dynamic  
Range (companded) audio. E.D.R. improves the sig-  
nal-to-noise ratio providing much better audio qual-  
ity.  
Question: Is the system more sensitive in any one  
particular direction?  
Question: Can the TT-16 and TR-16 be used with  
existing TR-34 and TT-44 products.  
Answer: No, the transmitter’s antenna radiates  
equally in all directions, but the signal is attenuated  
by your body, walls or other surrounding objects.  
The receiving antenna is essentially sensitive in all  
directions as well.  
Answer: Yes, as long as the E.D.R. feature is dis-  
abled on the TT-16 and TR-16.  
AVAILABLE FREQUENCIES  
Channel  
Freq. in MHz  
Broadcast TV  
Channel  
Question: Can the receiver receive other transmis-  
1
2
64.5  
64.7  
64.9  
65.1  
65.3  
65.5  
65.7  
65.9  
66.1  
66.3  
66.5  
66.7  
66.9  
67.1  
67.3  
67.5  
3
3
3
3
3
3
3
3
4
4
4
4
4
4
4
4
sions when the transmitter is turned off?  
Answer: Yes it can. Telex systems operate in the  
VHF Band between 64-68 MHz. However, it is not  
susceptible to radio wave skip, CB’ers or standard  
FM radio transmissions. It is on TV Broadcast chan-  
nels 3 and 4. So it is best to use the channels in  
your system that are not on the TV broadcast chan-  
nel in your area. See Table 1.  
3
4
5
6
7
8
The frequency your system operates on is computer  
selected for least interference, but there is no such  
thing as a 100% clear channel all the time.  
A
B
C
D
E
F
G
H
If the system is going to be used in a permanent  
fixed location, it should operate interference free un-  
til such a time or date when someone else begins  
using the same frequency.  
If the system is going to be moving among various  
locations, you may run into occasional frequency  
conflicts.  
Table 1  
Frequencies Available  
-2-  
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Treble Control: A push button treble control is pro-  
vided to enhance higher frequency audio when the  
button is engaged, indicated by .  
TR-16 SYNTHESIZED  
RECEIVER  
General Description TR-16  
Headphone Jack: The receiver jack accepts a  
0.140-inch (3.5 mm) diameter miniature plug. A va-  
riety of earsets or headphones can be plugged into  
this jack for listening.  
The Telex TR-16 Receiver is a component of a sys-  
tem which operates on sixteen (16) user selectable  
channels in the 64 to 68 MHz frequency band. The  
receivers are designed to be used with the Telex  
TT-16 Transmitter.  
Belt Clip: The belt clip supplied is detachable by  
spreading the wire apart at the tops and removing  
one side of the clip form the case and then the other.  
Operating Features  
Volume OFF/ON Control: This thumbwheel con-  
trol serves as both an off/on switch and as a volume  
control. The receiver is turned off when the control  
is in the extreme counter-clockwise position, when  
viewed from the rear, and the volume is loudest  
when the control is in the extreme clockwise posi-  
tion.  
BELT CLIP  
TELEX COMMUNICATIONS, INC.  
MODEL TR-16  
IC: 1321A-TR16  
This device complies with part 15 of the FCC rules. Operation  
is subject to the following two conditions: (1) This device may  
not cause harmful interference, and (2) this device must accept  
any interference received, including interference that may cause  
undesired operation.  
SET  
SWITCH  
BUTTON  
Made in U.S.A.  
S.N.: 1001  
BATTERY  
TREBLE CONTROL  
HEADPHONE JACK  
COMPARTMENT  
SET  
E.D.R.  
VOLUME OFF/ON CONTROL  
BELT CLIP  
BATTERY  
ORIENTATION  
BATTERY COMPARTMENT COVER  
Figure 3  
Operating Features TR-16  
-3-  
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SPECIFICATIONS  
TR-16 16 Channel Synthesized Receiver  
Temperature Range....................................................................32 to 122 degrees F/0 to +50 degrees C  
Supply Voltage ...............................................................................................2-3 Volts, (2) AA Batteries  
Battery Life....................................................................................................................20 Hrs - Alkaline  
16 Hrs - NimH  
8 Hrs - NiCad  
Frequency Response....................................................................................................100-10 kHz ±3 dB  
Sensitivity (12 dB SINAD @ 66.1 MHz)................................................................................1µ V max.  
Distortion...............................................................................................................................less than 2%  
Audio Output @ 10% Distortion  
Battery Input  
Voltage  
8 ohm  
15 mW  
80 mW  
32 ohm  
10 mW  
50 mW  
2.0 V  
3.0 V  
Controls and Connections.................................................................................Volume OFF/ON Switch;  
Treble Control Switch; Channel Selection Switch  
Audio Output Jack  
TT-16 SYNTHESIZED  
TRANSMITTER  
General Description  
The Telex TT-16 is a base station transmitter which  
operates in the 64-68 MHz band and accepts a wide  
range of audio input levels.  
Operating Features  
TT-16 Front Panel  
1. Power Button (Must be held in for 1  
1
6
second to turn off.)  
2. Headphone volume adjustment  
3. Headphone Monitoring Jack  
4. SET Button  
Telex  
Monitor  
RadioCom  
power  
set  
TT-16  
WIRELESS IFB TRANSMITTER  
5. Back Lit LCD Display  
6. UP and DOWN Adjustment Buttons  
4
2 3  
5
Figure 4a  
Operating Features TT-16 Front Panel  
-4-  
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TT-16 Rear Panel  
1. XLR Input Connector: Accepts bal-  
anced two wire Telex, RTS channel  
1 or RTS channel 2. NOTE: RTS  
channel 2 is compatible with  
*Clear-Com® Intercom Systems.  
Balanced  
Audio  
INPUT  
PINS  
1-2  
1-3  
2-3  
Antenna  
TM  
RadioCom  
RTS 1  
RTS 2  
TELEX  
12-15V  
AC/DC  
Unbalanced  
Audio  
2. Unbalanced Audio ¼" Input Con-  
nector.  
TT-16  
WIRELESS IFB TRANSMITTER  
FCC ID: B5DM524  
IC: 1321A-TT16  
S.N.: XXXXXX  
Telex Communications, Inc. Made in USA  
P/N: 804182  
Telex Communications, Inc.  
Made in U.S.A.  
3. Antenna Jack: Accepts telescoping  
antenna (supplied).  
4. Power Input Jack: Accepts any  
source of 12-15 VAC/DC 300 mA  
minimum.  
1
2
3
4
Figure 4b  
Operating Features TT-16 Rear Panel  
9
1
5
RF POWER: HIGH  
8
CHANNEL  
UNBALANCED  
-30dB  
+3 +6  
-10  
0
-5  
AUDIO LEVEL  
6
7
BALANCED  
AUDIO LEVEL -36dB  
2
AUDIO LEVEL  
RTS 1 RTS 2 TELEX  
65.9  
EDR  
MHz  
FREQ.  
8
4
3
1. Channel Indicator  
2. Audio Input Meter  
3. Frequency Indicator  
4. Enhanced Dynamic Range Indicator  
6. Unbalanced Audio Level  
7. Balanced Audio Level  
8. Balanced Input Selection for RTS 1,  
RTS 2, Telex  
9. Lock Out Indicator  
5. RF Transmit Power (High when lit,  
Norm when not)  
Figure 5  
LCD Display Functions  
*Clear-Com® is a registered trademark of  
Clear-Com Intercom Systems, Inc.  
-5-  
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TT-16 Specifications  
Audio Input: Female XLR  
RTS 1 Selected........................................................................Line impedance 200 W / Level adjustable  
RTS 2 Selected........................................................................Line impedance 200 W / Level adjustable  
Telex Selected.........................................................................Line impedance 300 W / Level adjustable  
Unbalanced Audio Input ..................................10K W input impedance/10 mV-1.0 VRMS input range  
RF Power Switch.......................................................................50mW in “Hi”, approx. 5mW in “Low”  
AGC Range ......................................................................................................................................30 dB  
Signal-to-noise Ratio:  
Normal..........................................................................................................................................58 dB  
EDR Enabled................................................................................................................................77 dB  
Pre-Emphasis....................................................................................................................................115mS  
Maximum Deviation.....................................................................................................................±25 kHz  
Frequency Control Crystal.........................................................................................+/-.005% tolerance  
Available Frequencies ................................................................................................See Table 1, page 2  
Max. Transmitter Output Power ....................................................................................................50 mW  
Power Requirements ................................................................................12-15V, AC or DC @ 300 mA  
Dimensions...................................................................................................7 ½"W x 1 3/4"H x 6 7/8"D  
FCC ID......................................................................................................................................B5DM524  
EQUIPMENT SET-UP AND OPERATION  
TT-16 SYNTHESIZED  
TRANSMITTER  
UNPACKING: Unpack your Wireless IFB system. If  
there are any damages or shortages, refer to the "War-  
ranty Service Information" card.  
ANTENNA  
TT-16 TRANSMITTER LOCATION: Select a suit-  
able location for the TT-16 Transmitter. Try to keep a  
clear, unobstructed path between the transmitter and  
receiver and allow plenty of free space around the  
transmitter antenna.  
REAR PANEL  
ANTENNA CONNECTIONS: Connect the tele-  
scoping antenna to the rear panel ANTENNA jack.  
Figure 6  
Antenna Connection  
For best results, the antenna should be vertically  
aligned. Tighten the knurled ring to hold the antenna  
in place, and extend the antenna to full length.  
POWER CONNECTION: Plug the AC power  
adapter into an electrical outlet. Plug the other end  
of the cord into the power input jack on the rear  
panel of the TT-16.  
-6-  
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should be used for small to medium sized venues  
and whenever multiple systems are being used. Press  
SET when the power is set and the Unbalanced In-  
put level will flash.  
Antenna  
12-15V  
AC/DC  
-
+
Unbalanced Input And Level Adjustment  
If the unbalanced audio input will not be used, with  
the "Unbalanced Audio Level" flashing use the  
DOWN button to set the level to OFF and press set  
to go to Balance Input Selection.  
Figure 7  
Connecting Power  
If the Unbalanced input will be used, connect the in-  
put now and apply audio content. With the audio  
content playing and "Unbalanced Audio Level"  
flashing, watch the audio meter. The peak signal  
should not go above the 0 dB segment, use the UP  
and DOWN buttons to adjust the input level so that  
the loudest input lights up the 0 dB segment. When  
the level is set, press the SET button and one of the  
input options will flash.  
SYSTEM SET UP  
All of the channel and input selection functions are  
accessed from the front panel. Press SET button  
once to begin System Setup. Whenever a function is  
flashing, the UP and DOWN buttons can be used to  
adjust it. Once set, the next function will start to  
flash. To access a specific function, press SET until  
the function is flashing, the features are accessed in  
the following order:  
Balanced Intercom Input and Level Adjustment  
Channel  
With the Balanced Intercom Input selection flashing  
(RTS1, RTS2, or TELEX). Use the UP and DOWN  
buttons to scroll to the correct input. With the cor-  
rect input displayed, press SET and the "Balanced  
Audio Level" indicator will flash.  
RF Power Output  
Unbalanced Level Adjust  
Balanced Input (RTS1/RTS2/Telex)  
Balanced Level Adjust  
If the intercom audio input will not be used, with  
one of the Balanced Input options flashing press  
SET so the "Balanced Audio Level" is flashing.  
Use the DOWN button to set the level to OFF and  
press SET to end the setup session. When OFF is  
selected "Balanced Audio Level" will not be dis-  
played on the screen.  
Channel Selection  
Turn the TT-16 on by touching the POWER button.  
(The TT-16 is designed to return to "on" if power is  
disconnected while the unit is on. This is so the unit  
can be switched on and off with a power strip or  
rack power).  
The LCD display will light up and show the Chan-  
nel, Audio Meter, Frequency (and E.D.R. if it has  
been enabled). Press the SET button once and Chan-  
nel letter will flash. Use the UP and DOWN Arrow  
buttons to select the desired channel 1-9 and A-H.  
Press SET when the desired channel is displayed  
and the channel is set. The channel letter will stop  
flashing and the RF Power indicator will flash.  
If the Balanced Input Selection will be used, then  
connect the input and apply audio content. With the  
audio content playing and "Balanced Audio Level"  
flashing, watch the audio meter. The peak signal  
should not go above the 0 dB segment, use the UP  
and DOWN buttons to adjust the input level so that  
the loudest input lights up the 0 dB segment. When  
the level is set, press the SET button and the Setup  
Session will end.  
RF Power Selection  
NOTE: The TT-16 will operate with both Unbal-  
anced and Balanced inputs active at the same time.  
While the "RF Power" indicator is flashing, press  
the UP ARROW for HIGH and DOWN for NORM  
(the "RF Power" line will flash quickly and will  
disappear when SET is pressed). NORM power  
-7-  
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Enhanced Dynamic Range (E.D.R.) Operation  
MULTIPLE SYSTEM INSTALLATIONS: As  
with any radio device, interference can occur at any  
time. The frequencies offered are shared with other  
legitimate users. The severity of interference varies  
with the distance to the interfering station. Multiple  
systems further complicate installations. The follow-  
ing steps are suggested in order to achieve best re-  
sults in your installation.  
The Telex TT-16 Transmitter is equipped with  
E.D.R., Enhanced Dynamic Range (companded) au-  
dio. This mode greatly improves the Audio Signal to  
Noise Ratio when used with the Telex Model TR-16  
receiver. The E.D.R. mode must be selected on both  
the transmitter and receiver to be effective. If using  
the TT-16 with TR-34 IFB units, E.D.R. must be  
turned off.  
1. In order to determine whether your selected fre-  
quencies have minimum interference, Telex rec-  
ommends that you first temporarily install the  
receivers in your proposed setting and monitor  
the channel for interference. To do this (with  
fresh batteries installed) turn on your receiver,  
but DO NOT turn on any other receiver or trans-  
mitter at this time. If audible interference is pres-  
ent, this may indicate another user on the  
channel. Monitoring should be repeated for each  
channel that you propose to use. DO NOT use  
channels that have interference.  
1) To engage the E.D.R. function, turn the TT-16 off  
with the power switch. (The power switch must  
be held for 1 second to turn unit off.)  
2) Press and hold the SET button while you turn the  
TT-16 back on. The E.D.R. symbol will be dis-  
played in the lower right corner to indicate the  
mode is active.  
3) Repeat the procedure to disable the E.D.R func-  
tion.  
Lock Out  
The TT-16 SET button can be locked to prevent  
E.D.R. activation, and unintended channel changes.  
2. Set your transmitter(s) to channels with no or  
minimum interference. Each transmitter must be  
set to a separate frequency. For best results when  
using multiple transmitters, each transmitter  
should be installed separately as far as possible  
from the others.  
1) To engage the Lock Out Feature, press the UP  
and DOWN buttons at the same time and hold  
them down for two seconds.  
2) The padlock symbol will appear and the set but-  
ton is disabled.  
3. Turn on the transmitter(s) with an active audio  
input. Test walk a receiver through the expected  
listening area to verify coverage. The system  
should now be ready for use.  
3) To unlock the system, press the UP and DOWN  
buttons and hold them for two seconds or until  
the padlock symbol disappears.  
Audio Monitor  
Turn the Monitor (volume) control all the way down  
(counterclockwise). After the audio input levels  
have been adjusted, Stereo headphones with a 3.5  
mm or ¼ in. plug can be plugged into the Monitor  
jack. If you wish to monitor the audio program ma-  
terial, turn up the monitor (volume) control to the  
desired level. The monitor control does not affect  
the transmitted audio level.  
-8-  
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1) To engage the E.D.R function turn the TR-16 off  
with the volume control thumb wheel.  
TR-16 SYNTHESIZED  
RECEIVER  
2) Press and hold the SET button while you turn the  
TR-16 back on. The E.D.R. symbol will be dis-  
played in the lower right corner to indicate the  
mode is active.  
Keep a clear, unobstructed path between the trans-  
mitter and receiver antennas for a clear transmis-  
sion.  
3) Repeat the procedure to disable the E.D.R. func-  
tion.  
2
1
Lock Out  
The TR-16 SET button can be locked to prevent  
E.D.R. activation, and unintended channel changes.  
The High Frequency Emphasis button will remain  
active at all times for the convenience of the user.  
3
E.D.R.  
1) To engage the Lock Out Feature, press the SET  
and buttons at the same time and hold them  
down for 5 seconds.  
4
1. Channel Display 1-9 through A-H and low battery  
2) The padlock symbol will appear and the set but-  
ton is disabled.  
indicator  
2. Lock Indicator (see Change Lock Out)  
3) To unlock the system, press the SET and but-  
tons and hold them for 5 seconds or until the  
padlock symbol disappears.  
3. High Frequency Emphasis Indicator (on when  
symbol is showing)  
4. Enhanced Dynamic Range Indicator.  
Figure 8  
TR-16 Display  
SET  
SWITCH  
BUTTON  
Channel Selection  
TREBLE CONTROL  
HEADPHONE JACK  
1) Turn the receiver on. A channel letter will show  
in the display.  
SET  
2) Press the SET button once and the Channel indi-  
cator will flash.  
E.D.R.  
3) Press the  
button and the Channel will scroll  
VOLUME OFF/ON CONTROL  
up, match the channel to the transmitter channel  
being used (TT-16, TT-44).  
4) Press SET, the channel indicator will stop flash-  
ing and the channel is set.  
Enhanced Dynamic Range (E.D.R.) Operation  
The Telex TT-16 transmitter is equipped with  
E.D.R., Enhanced Dynamic Range (companded) au-  
dio. This mode greatly improves the Audio Signal to  
Noise Ratio when used with the Telex Model TR-16  
receiver. The E.D.R. mode must be selected on both  
the transmitter and receiver to be effective. If using  
the TR-16 with a TT-44 IFB Transmitter, E.D.R.  
must be turned off.  
-9-  
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Low Battery Indication  
1) When there is approximately 10% of the battery  
life left, an animated battery symbol will flash al-  
ternately with the channel letter in the LCD dis-  
play.  
2) When there is only 5% battery life left, the bat-  
tery symbol will constantly flash in the display.  
E.D.R.  
Low Battery Display  
BATTERY REPLACEMENT  
The TR-16 Receiver uses two (2) AA batteries.  
When the batteries are low the sound will be dis-  
torted. Replace weak batteries with two fresh AA  
batteries, and position them in the battery compart-  
ment as illustrated in Figure 9.  
For additional information refer to the “Battery In-  
formation” Section.  
NOTE: If the unit is to be stored for any length of  
time make sure you remove the batteries from the  
unit.  
BELT CLIP  
BATTERY  
ORIENTATION  
BATTERY COMPARTMENT COVER  
Figure 9  
Battery Installation - TR-16  
-10-  
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BATTERY INFORMATION  
General  
Alkaline Batteries  
Improper battery selection, use, installation and care  
are the cause of numerous wireless system failures.  
Alkaline batteries such as Mallory’s DURACELL®  
or Eveready’s ENERGIZER® provide the most reli-  
able operation in wireless transmitters and receivers.  
The use of low cost carbon-zinc batteries is NOT  
RECOMMENDED.  
*ENERGIZER® is a registered trademark of Union  
Carbide  
Corporation.  
*DURACELL® is a registered trademark of  
Duracell Inc.  
ANTENNA INFORMATION  
Antenna Alignment  
Antenna Placement  
Proper antenna placement probably has the most ef-  
fect on your TELEX Wireless System’s overall per-  
formance. Following the suggestions that follow  
should result in “dropout free” performance.  
Balanced  
Audio  
Balanced  
Audio  
INPUT PINS  
INPUT PINS  
T
M
TM  
RadioCom  
TT-16  
Antenna  
RadioCom  
TT-16  
RTS CH1 1-2  
RTS CH2 1-3  
Unbalanced  
Audio  
12-15V  
AC/DC  
RTS CH1 1-2  
RTS CH2 1-3  
Unbalanced  
Audio  
12-15V  
AC/DC  
TELEX  
2-3  
TELEX  
2-3  
WIRELESS IFB TRANSMITTER  
FCC ID: B5DM524  
WIRELESS IFB TRANSMITTER  
FCC ID: B5DM524  
IC: 1321A-TT16  
IC: 1321A-TT16  
S.N.: XXXXXX  
S.N.: XXXXXX  
Telex Communications, Inc. Made in USA  
P/N: 804182  
Telex Communications, Inc. Made in USA  
P/N: 804182  
Telex Communications, Inc.  
Made in U.S.A.  
Telex Communications, Inc.  
Made in U.S.A.  
Telex  
Monitor  
RadioCom  
power  
set  
TT-16  
WIRELESS IFB TRANSMITTER  
Figure 10  
Telex  
Monitor  
RadioCom  
power  
set  
TT-16  
WIRELESS IFB TRANSMITTER  
Antenna Alignment  
Good and Bad  
Figure 11  
Distance Between Transmitter and Receiver  
Keep the distance between the transmitter and the  
receiver(s) as short as possible. The greater the dis-  
tance the weaker the signal.  
-11-  
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Make sure the “signal path” between the transmitter  
and receiver(s) is unobstructed. You should always  
be able to visually locate the antenna of the trans-  
mitter at all times.  
DO NOT - Mount the transmitter on, or next to,  
metal such as beams, walls with metal studs, etc.  
This will “detune” the transmitter antenna which  
can result in loss of signal at the receiver.  
LOCATION  
IS OK  
RadioComTM  
power  
set  
Telex  
Monitor  
TT-16  
WIRELESS IFB TRANSMITTER  
LOCATION  
IS BAD  
Telex  
RadioComTM  
power  
set  
Telex  
Monitor  
TT-16  
WIRELESS IFB TRANSMITTER  
Telex  
Monitor  
RadioCom  
power  
TT-16  
set  
WIRELESS IFB TRANSMITTER  
SIGNAL REACHES ANTENNA AT FULL STRENGTH WITH NO OB-  
STRUCTIONS.  
Figure 12  
Keeping Site Clear to Antenna  
Figure 14  
Transmitter Antenna Placement  
Attempting to operate the sound enhancement sys-  
tem through or around walls, ceilings, metal objects,  
etc., will reduce system range and performance.  
Telex  
RadioCom  
power  
Monitor  
TT-16  
set  
WIRELESS IFB TRANSMITTER  
SIGNAL REFLECTION OFF A METAL OBSTRUCTION CAUSES  
REDUCED SIGNAL AND “MULTIPATH”  
Figure 13  
Operating Through Obstruction  
-12-  
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TROUBLESHOOTING  
Reread the sections of this manual to make sure you  
have completed system set-up properly.  
If you are unable to solve the problem, contact the  
dealer from whom you purchased the system for as-  
sistance.  
PROBLEM  
SOLUTION  
Reduce audio gain on transmitter by adjusting  
the gain controls.  
DISTORTION -System's audio quality seems  
distorted at medium to high input levels  
Check the gain settings on the transmitter and  
the volume control on the receiver. They may  
be too low.  
HISS - System seems to produce a "hiss" which  
is undesirable.  
Make sure the antenna is connected and fully  
extended. Follow the location suggestions on  
page 15. Change the location of the transmitter  
antenna or avoid the bad area with the receivers.  
DROPOUTS - When moving around the area  
in which you will be using the system there  
seem to be locations where the signal  
"swooshes" or completely disappears.  
Make sure the Telex TT-16 is turned on - this  
will usually eliminate the interference signal.  
INTERFERENCE - System picks up signals  
other than the TT-16 Transmitter.  
If problem persist with the transmitter "ON", try  
changing to another channel.  
Receiver Battery is possibly in need of replace-  
ment. Transmitter antenna possible located in-  
correctly. Receiver not tuned properly.  
REDUCED DISTANCE - System doesn't oper-  
ate as far as it once did. System doesn't' operate  
as well as you think it should.  
If using "throw away" batteries make sure they  
are alkaline. If using nickel-cadmium or nickel  
metal hydride batteries make sure they were  
fully charged when yo are using them and fully  
drained when you are done before recharging  
them.  
BATTERIES DON'T LAST  
Locate Transmitter away from the audio equip-  
ment.  
HUM - Audio System emits hum or buzz thru  
speakers and sound enhancement receiver.  
Transmission sounds compressed on TR-16  
E.D.R. function may be engaged on the TT-16.  
See setting E.D.R. function on page 9. The  
E.D.R. feature can only be used with the TR-16  
and must be active on both transmitter and re-  
ceiver to be effective.  
SET button does not work, cannot change chan-  
nel  
Lock Out is engaged, press and hold UP and  
DOWN buttons until the padlock symbol disap-  
pears.  
-13-  
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FCC INFORMATION  
The Telex TR-16 receiver is authorized under part 15 of the FCC Regulations. Changes or modifica-  
tions to this equipment could void the user’s authority to operate the equipment.  
The Telex Model TT-16 transmitter is authorized under Federal Communications Commission and  
Industry Canada Rules. Licensing of the Transmitter, if required, is the users responsibility and  
licensability depends upon the users classification, and frequency selected.  
CAUTION: Changes or modifications made by the user could void the user's authority to operate the  
equipment.  
Operation is subject to the following two conditions: (1) This device may not cause interference, and  
(2) This device must accept any interference, including interference that may cause undesired opera-  
tion of the device.  
ACCESSORIES  
CES-2 complete TeleThin® Announcer Earset.........................................................................800318000  
(incluces TRV-04 125 ohm TeleThin® Receiver, CMT-98 5ft TeleThin®  
Grey cordset and ET-4 Coiled Eartube)  
SEB-1 Single Earbud with Cord ..................................................................................................59840005  
DEB-2 Dual Earbud with Cord....................................................................................................59840001  
HED-2 Collapsible Lightweight Headphone...............................................................................59840007  
HED-3 Full Cushion Noise Reduction Headphone.....................................................................63510021  
TW-A 1/4 Wave Telescoping Antenna for TT-16 ...........................................................................877960  
PA-2 USA Power Supply for TT-16 ................................................................................................730139  
RM-S Single Rack Mount for TT-16..........................................................................................71081001  
RM-D Dual Rack Mount for TT-16.............................................................................................71081002  
TR-16 Belt Clip ................................................................................................................................358815  
-14-  
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TELEX COMMUNICATIONS, INC. 12000 Portland Ave. South, Burnsville, MN 55337,U.S.A.  
PN 804184 Rev. B  
AUG 2005  
Made in U.S.A.  
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