Operating Instructions

FIGURE 3.
BTR-800 - Rear Panel
10 BTR-800 Base Station BTR-800, TR-800, TR-825
1. Receive Antenna – Female TNC Connector. Color band on
antenna must match color dot on base station.
2. Transmit Power Switch – HIGH = Transmitters at full
power. NORMAL = Transmitters 10dB below full power.
3. Transmit ON/OFF Switch – Turns the transmitters on or
off.
4. I/C Select Switch – Set to the appropriate 2-wire intercom
type being interfaced to the unit. Set to either Telex, RTS, or
Clear-Com.
5. Base Station Link Jack – When two base stations are
connected through this jack, it allows wireless talk around
(WTA) from the beltpacks to be routed from the system
with it’s transmitters off to the system with it’s transmitters
on.
6. Relay Contact – A dry contact closure which is activated
when a beltpack user presses the stage announce (SA)
button. Normally Open (NO). 1 Amp at 24V maximum.
7. Intercom A – Interface to wired intercom system A. 
2-Wire – Male and female 3-pin XLR connectors wired in
parall
el. The connectors are switched to the appropriate
intercom configuration via the I/C Select Switch.
WARNING: Excessive current through the loop thru ports
will damage the intercom! Do not exceed 200
mA current in the 2-wire loop thru circuits.
4-Wire – An RJ-11 type jack compatible with Matrix type
intercom systems.
8. Intercom B – Interface to wired intercom system B. 
2-Wire – Male and female 3-pin XLR connectors wi
red in
parallel. The connectors are switched to the appropriate
intercom configuration via the I/C Select Switch.
WAR NING : Excessive current through the loop thru ports
will damage the intercom! Do not exceed 200
mA current in the 2-wire loop thru circuits.
4-Wire – An RJ-11 type jack compatible with Matrix type
intercom systems.
9. Auxiliary Input/Output – One 3-pin female XLR input
connector and one 3-pin male XLR output connector.
10. Stage Announce Output – Passes the audio from any of
the base stations’s beltpack that have selected stage
announce (SA).
11. Power – IEC receptacle. Accepts 100–240 VAC, 50–60 Hz.
12. Transmit Antenna – Female TNC Connector. Color band
on antenna must match color dot on base station.