Bosch Security Systems Inc. M532 Manual De Usuario

BTR-240 Users Manual - Preliminary 

Page 1 of 8 

Rev D – 4 / 18 / 2011 

 

 
 
General Description 
 
The RTS model BTR-240 base station 
transceiver is a rack mountable, full-duplex, 
wireless intercom radio.  The base station 
provides a central relay location which 
handles the audio traffic between the TR-
240 beltpacks. 
 
A BTR-240 base station can be used to 
support up to eight full-duplex wireless TR-
240 beltpacks and many more for beltpacks 
in push-to-transmit mode. 
 
The BTR-240 uses the IEEE 802.11b 
technology to transmit / receive within one 
channel of the 1 – 11 (2.412 to 2.462 GHz) 
allowable channels of the 2.4 GHz ISM 
band.  Operation of the BTR-240 is license 
free.   
 
The typical line-of-sight distances for the 
system may be 300 feet. 
 
The transmit and receive antennas are 
connected via unique reverse TNC 
connectors on the rear panel of the unit. 
 

The BTR-240 is powered via a 12 – 15 VDC 
receptacle on the rear panel.  A 12 VDC 
power supply is supplied with the BTR-240. 
The front panel LCD display and buttons 
allow the following menus to be obtained: 
 
•  RF operating channel 

•  Microphone gain 
•  Sidetone level 

•  Transmit squelch setting 

•  2W / 4W intercom type settings and 

levels 

•  Auxiliary In / Out settings and levels. 

•  Speaker output setting and level. 
 
The front panel also has an on/off power 
control.  A talk button, talk light, channel 
select button, channel select lights, and 
volume are also available for a user at the 
base station local headset.