Bosch Security Systems Inc. M520 Manual De Usuario

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Telex Model TR-1 Beltpack 
From the LCD display and buttons the following 
menus may be obtained: 
 
 
 
•  Group and Channel 
•  Transmit Frequency 
•  Receive Frequency 
•  Battery Life 
•  Microphone Gain 
 
The on/off/volume control, talk button, talk light, low 
battery indicator, microphone level indicator, A/B 
audio rocker switch and lights, are located on the top 
panel. 
 
Owners / Users Manual 
(Preliminary Information) 
 
 
The C audio button is located on the front panel. 
 
General Description: 
Transmit and receive antennas are attached to the TR-
1. Either or both unscrew for field replacement but are 
not coaxial connectors.  
 
The Telex model TR-1 beltpack transceiver is a 
component of the BTR-1 wireless intercom system. 
The TR-1 is intended for use as a belt worn wireless 
full duplex mobile intercom radio for use in a 
professional installation such as television or cinema 
production. 
 
The TR-1 beltpack can be powered by AA Alkaline or 
a Nickel-Metal Hydride Battery pack. 
 
 
 
 
Each BTR-1 base station can be used with one TR-1.  
The TR-1 transmits within the 614 to 746 MHz range 
(TV Channels 38-59).  It receives in the 482 to 608 
MHz range  (TV Channels 16-36).  The TR-1 
transmitter operates on a single frequency within an 18 
MHz wide section of the transmit frequency range.  
The receiver also operates on a single frequency within 
an 18 MHz wide section of the receiver frequency 
range. 
 
 
 
 
 
 
 
 
 
 
 
Typical transmitter conducted output Power is 50 mW. 
The TR-1 transmit power can be set to automatically 
reduced when the unit is close-in to the base station to 
aid in intermodulation reduction and unnecessary 
transmit power. 
 
 
 
 
 
 
 
Operating frequencies can be selected from pre-set 
groups or the user can select special operating 
frequencies within the 18 MHz wide allotments. 
 
 
 
 
 
The LCD display and buttons plus the talk function 
switch, is located on the back panel.  
 
 
 
 
 
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