User's Manual

will transmit. This input is also coupled to the transmitter audio
circuitry. When an electret microphone is connected to this input
it is powered by the PTT circuitry and the audio from the microphone
is transmitted.
4 MON When taken to 1 volt or lower, this input over-rides the squelch muting
and allows audio to be present at the AUDIO OUT pin (see below)
even when no signal is present.
5 AUDIO OUT The output of the audio power amplifier. The output level is set by
R330 and it is capable of driving 8-ohm loads.
6 PROG Bi-directional pin for connection to the RITRON programmer.
Note: There is no internal muting on the two audio input pins, AUDIO IN and PTT/MIC. Insure that no
active signal is present on these inputs unless it is desired for that signal to be transmitted.