[aprssig] GM-300 speaker output

[Rich Osman]

I'm not sure what you want ot hook up. If it's a speaker, just float it
across the speaker outputs. The output is a very low impedance (~2 ohms,
maybe 4) so if you use an 8 ohm speaker you won't get much audio. The
internal speaker is just a jumper connection and isn't bad in normal use.

If you want to use that output to drive a tracker input, just cap couple
it. I'd use the RX audio pin if I was you, the front panel volume
control doesn't mess with it. I'd also program one of the general I/Os
to be COS out and use it to gate the tracker.

note that the accessory connector pinouts vary by model.

http://www.batlabs.com/gm300.html

Scott Miller wrote:
> What's the best way to hook up a GM-300 with floating speaker outputs?
> With an isolation transformer, or is there a simpler way that won't
> blow up the audio amplifier?
>
> Scott
> N1VG
>
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Rich Osman;  POB 93167; Southlake, TX 76092 (Near DFW Airport)