User's Guide
Table Of Contents
1-2 Audio Processor Board Instruction Manual
A continuous
+
9.5 VDC supply and a switched
+
8.0 VDC supply are required to power the
module which is normally supplied by the Main Transmitter Board.
The 6 audio inputs on the FM Audio Processor are:
• D
Y
NAMIC MICROPHONE INPUT
• 600 OHM BALANCED INPUT
• subtone inputs
• auxiliary input.
• direct modulation input for data signals.
The Audio Processor's balanced input pins are isolated by a transformer (T1) on the Transmitter
Main Board. Two audio outputs from the MT-3 Audio Processor are routed to the Synthesizer or
Crystal Controlled Oscillator Modules.