The ALC cards process both repeated audio and console audio unless the
system is in bypass. I can scan the block and level diagrams if you
like. PST is Public Safety Trunk - Ssb
I'm assuming when you say clear voice, you mean analog, (VOICE APPLIED
TO THE CONSOLES IS ANALOG AND CONVERTED FROM DIGITAL TO ANALOG - AT
PRESENT AEGIS IS NOT DECODED AT THE CONSOLES - PROVOICE IS UNDER
CONSTRUCTION AND WILL DECODED AND SENT TO THE C3 MAESTRO CONSOLES) vs
either
encrypted or unencrypted Voice Guard, AEGIS, or ProVoice.
What you are hearing is AGC in the console electronics, and does not
affect repeat audio. There may also be some AGC in the microwave (THE
MICROWAVE CARRIES 4, T1 CHANNELS CONVERTED FROM ANALOG IN A HARRIS
INTRAPLEX MUX SHELF0 or what
ever means they use to connect the sites together, but only to keep the
levels from exceeding 0dBm.
BTW, what is a PST? Not familar with the term.
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