A Newbie here with a problem. I'm still trying to grasp the ins and out of Astrisk and App-rpt etc. I'm trying to connect a USB FOB to my RC-210. I do grasp the reverse RC-210 wiring process. However I found no way to force pin 13 high to activate PTT pin from the FOB for testing purposes. Any suggestions on how or if I'm doing something wrong? I have added a PTT LED for monitoring the output logic from pin 13 but have never been able to get it to turn with any function I've tried other than forcing a voltage at the junction feeding it and the base resistor of the 2N4401. My RC-210 will work at that point but I'm not certain if I have an issue with the USB FOB PTT output. Am I am missing something or perhaps I don't understand the logic of the different functions. I'm not against reading but jumping all around to find different materials has left the mind in a jumble. Can anyone enlighten me as to when in the sequence PTT output becomes active and the voltage I should find on that pin when it does? Thanks Larry - N7FM