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Can someone give me a quick answer on this? Gm-300 pinout ?
Posted: Mon Aug 28, 2006 4:17 pm
by ANB_Medic
I should know this, but I'm having a brain-fart tonight. Can someone tell me how to do this? I want to run a line to a soundcard for recording purposes, while still keeping the internal speaker functioning.
Thanks guys...
Todd
Re: Can someone give me a quick answer on this? Gm-300 pino
Posted: Mon Aug 28, 2006 4:32 pm
by mrtor
sja505 wrote:I should know this, but I'm having a brain-fart tonight. Can someone tell me how to do this? I want to run a line to a soundcard for recording purposes, while still keeping the internal speaker functioning.
Thanks guys...
Todd
Easy
Keep Pin 15 & 16 linked together to enable the internal speaker
Take the line to your soundcard as Pin 7 Ground Pin 11 Audio
I know there is a jumper in the radio that determines if you have squelched or unsquelched audio, not sure of the top of the head which one but the Pins as above should do the trick
Regards
Mike
Posted: Mon Aug 28, 2006 4:33 pm
by Will
Pin 11 has rx audio squelched and filtered. Best to use a coupling cap and series resistor so to not load down the opamp in the radio. Or overload the input to the sound card. Typical values are 1 uF cap, + to the radio and a 10K resistor. If overload or distortion on the sound card increase the resistor value.
Posted: Mon Aug 28, 2006 4:43 pm
by ANB_Medic
Thanks guys... Appreciate the fast answers.
Todd
Posted: Mon Aug 28, 2006 4:44 pm
by PETNRDX
The jumper to make sure audio out to pin 11 would be squelched is JU551 in position B. That is the default position, so that is where the jumper most often is.