M8SL2-00-002-812 Talk Through Repeater G3.1
© Copyright Tait Electronics Limited August 2004. All rights reserved.
3 Talk Through Repeater
In this configuration the receiver directly keys the transmitter when the signal is
received. The demodulated audio is fed via 600Ω lines to the transmitter to modulate
the carrier. The receiver and transmitter operate simultaneously and must therefore be
on different frequencies. The minimum frequency separation depends on the duplexer
used.
Figure 3.1 Talk Through Repeater
Duplexer
Receiver Transmitter
Monitor
Speaker
Local
Microphone
13.8V
Supply
+
-
Tx Key Out
Line Out Line In
Tx Key In
Antenna
Typical line level -15dBm
Monitor
Out
Mic.
In
Transmit PortReceive Port
RF In
'N' Socket
RF Out
'N' Socket
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