Bosch Security Systems M528 User Manual

Telex Model BTR-80N Base Station

Owners / Users Manual

(Preliminary Information)

General Description:

The Telex model BTR-80N base station transceiver is
a component of the BTR-80N wireless intercom
system. The BTR-80N is a rack mountable, full
duplex, wireless intercom radio for use in a
professional installation such as television or cinema
production.

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 RF coverage range of the BTR-82N
communicating to beltpacks may be up to 200 meters
(656 ft).

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.

From the front panel LCD display and buttons the
following menus may be obtained:

• Group and Channel

• Transmit Frequencies

• Receive Frequencies

• Volume and Microphone Gain Setting

• Transmit power level (Off, 10mW, 50mW

100mW, 249mW)

• Receiver Squelch Level

• Intercom type

• Intercom input/output levels

• Auxiliary input/output levels

• Stage announce output level

The on/off control, talk button, talk light, low battery
indicator, microphone overmod. light, audio channel 1
or 2 button and lights, auxiliary and intercom level
indicator lights, portable station connection buttons
are all on the front panel.

The BTR-80N base station can be powered by 100 –
240 VAC, 50 – 60Hz, via an IEC receptacle. The unit
may also be powered via a 12 - 15VDC receptacle on
the rear panel.

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Controls and Connections

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