![]() ![]() A poor contact on the key line can also cause problems if the radio's key input isn't designed to handle a high resistance (many are not). Integrated Push-To-Talk microphone Braided Cable now available Retail Price: 34.95 Our Price: 29 (You save 5. All Earphone / Microphone assemblies now have an improved design including : a new PTT circuit, an added kevlar strength member to increase Hi-Use Cable. If the Key contact works the radio will go into transmit mode and if the mic contacts are corroded the mic audio will be missing or very attenuated. I have the headset adapter, but I need to make a PTT for a top of stick mount. The microphone to audio line carries voltage to the microphone's internal amp as well as the audio back to the radio or intercom. I am new to this forum and I am looking for information on a material list to fabricate a PTT switch assembly for a Icom A-22 hand held. One set connects the microphone to the mic audio line and the other shorts the Key (transmit on) to ground. Have you flown again since? And how are things over at the old T's? The push to talk is really just a binary thing - on or off - so if the radio is transmitting at all then I'd be surprised if replacing the PTT fixed your problem. ![]()
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