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Need PL Detect signal from GM300 Non expanded board
Posted: Fri Jun 13, 2014 6:31 pm
by Caaarlo
Hello, I am building a 146mhz repeater and I need a PL/DPL detect signal for an external controller. I already checked the schematics for the logic board (HLN8074E), but the only signal available is RX-MUTE/COR. Any PL/DPL detect signal somewhere in this logic board ?
TIA !
Re: Need PL Detect signal from GM300 Non expanded board
Posted: Fri Jun 13, 2014 8:34 pm
by Caaarlo
I forgot to mention: I need separate CSQ and PL/DPL signals.
I have figured out that when hooked, the COR signal at the accessory connector, pin 8 will be a PL/DPL decode signal when channel has been programmed PL/DPL RX... and then I can get CSQ signal from the board interconnect pin #2.
Re: Need PL Detect signal from GM300 Non expanded board
Posted: Sat Jun 14, 2014 1:28 pm
by Will
Pin 8 IS CS Detect AND PL\DPL Detect. So both a valid carrier And a valid PL/DPL gives a zero tru logic level. Even if the radio it self is 'off hook' or in Monitor. What is called AND Squelch.