![]() At least I have a nice case to build my own interface in now. ![]() I also figured that going with a well known brand of interface would be a good thing. Granted, this application might be very specific but there's something strange to me about trying everything you can put together in your head about how a radio keys and sends audio through the mic connetor and still come up holding nothing but a POS. I reinstalled the 680ohm resistor for this (I also used and then shorted the 2.2kohm resistor in the cable) thinking it might help somehow but still could not get any audio to pass. The problem here was not a lack of keying (it would key perfectly fine) but that no audio would be passed. I even drew up my own idea for an interface cable with still no results. I could only find one instruction site on how to build a cable for an HT and ended up building and rebuilding the cable described 3 times with no luck. I tried it with a Radio Shack HTX-245 that would work perfectly fine with Radio Shack mics and other homebrew spkr/mic combinations that I had developed in the past. Apples and Oranges maybe (I'm not sure how the keying in the Baypac works) but still worth noting. What is interesting (to me, at least) was that this same radio has worked perfect with a Tigertronics Baypac modem in the past and had no keying problems. I wish they would have said something about this on the packaging.or on the website.or anywhere other than asking through tech support (which is actually very good). Yeah, get an interface with a relay in the keying circuit, I understand that part. ![]() I had to remove and then jumper across the 680ohm resistor in the unit to get it to work and it still would have problems keying up every once in a while. It took everything I knew about microphone wiring (which I found out was a lot) to get it working with a mobile radio that needed to see a decent amount of ground when it keyed up. Mine hasn't died, yet, but it's been a major pain to get working. It was going to be pressed into service with unused equipment so I figured the lack of a secondary mic connector wouldn't be so bad. I bought the nomic against the advice of a friend that had one randomly die on him.
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