Duane, The red LED on the sound fob is not PTT. It's mute. You would need to add a LED to the PTT output circuit to get a LED for transmit. 73, Steve N4IRS On Tue, Feb 23, 2016 at 1:52 PM, DuaneVT . <selkie2@comcast.net> wrote:
I'm running DIAL on a R-Pi2 into a modified USB fob for connection to my repeater. Everything seems to load and be configured fine, but I can't get the fob PTT to trip. I believe the PTT FET is driven from the red LED on the fob (pin13) and I can't get a new unmodded fob to cycle the red LED either. Simpleusb-tune-menu "f" test of PTT and audio shows no LED/PTT activity, but tone is OK. Audio courtesy tones and hang time and receive audio passes the in/out of the fob during COR, just NO keying. Now I did install DIAL on the R-Pi2 without CM108 attached if that was important. Ideas where the config is unright? 73, Duane KA1LM #42996
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