User's Manual
Table Of Contents
- Telex Model BTR-80N Base Station
- Each BTR-80N base station can be used with one to four TR-80N or TR-82N beltpacks. The BTR-80N transmits within the 482 to 608 MHz range (TV Channels 16-36). It receives in the 614 to 722 MHz range (TV Channels 38-55). The BTR-80N transmitters operate within an 18 MHz wide section of the transmit frequency range. The receiver also operates with a single front-end that is 18MHz wide and then block down-converts the received frequencies to four IF strips.
- The transmitters have three selectable conducted output power levels; Off, 10mW, 50mW, 100mW and 249mW. This user selectable power level allows intermodulation reduction plus the lower of transmit power to just meet the communication link’s need.
- Operating frequencies can be selected from pre-set groups or the user can select special operating frequencies within the 18 MHz wide allotments.
Specifications:
General:
Input Power………………………………………….……..100-200 VAC, 50 – 60 Hz, IEC receptacle
Antennas……………………………………………………one TX, one RX: 1/2-wave, TNC male connector
TX / RX………...Two TX, one RX with 4 IF strips. Frequency agile, 25kHz steps within 18MHz wide allotments
Frequency Range……………………………………………TX…………….482 – 608 MHz
RX…………….614 – 722 MHz
(within 18MHz wide allotments)
FCC ID:……………………………………………………..B5DM528
IC ID:……………………………………………………….1321A-BTR80N
Transmitter:
RF Power Output……………Selectable between levels: Off, 10mW, 50mW, 100mW, 249mW typical (terminated)
Final Voltage (249mW)……………………………………..4.75 VDC
Final Current (249mW)……………………………………..57mA
Modulation type………………………………………….….FM
Deviation…………………………………………………….5 kHz
Audio Frequency Response…………………………………100 Hz to 7 kHz
Microphone Sensitivity ………………………………..……15 mV
Receiver:
Sensitivity……………………………………………………<0.6uV for 12 dB SINAD Typical
Audio Frequency Response…………………………………..100 Hz to 7 KHz
Audio Output (headset)…………………………………….….40 mW, 600 Ohms (1% Distortion)
RF Frequency Stability…………………………………….….Better than 0.005%
IF Selectivity……………………………………………….....3 dB at 30kHz
Approval Information:
FCC
The Telex BTR-80N Transmitter/Receiver base station is type accepted under United States Federal
Communications Commission Part 74.
This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device
does not cause harmful interference.
Licensing of Telex equipment is the users responsibility and licensability depends upon the user’s
classification, user’s application and frequency selected. Telex strongly urges the user to contact the
appropriate telecommunications authority for any desired clarification.
CAUTION: Any changes or modifications made to the above equipment could void the user’s authority to
operate the equipment.
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