Open Box HEIL AD-1-ICM Headset Adapter SN55979

Open Box HEIL AD-1-ICM Headset Adapter SN55979. Not in original packaging...tested and works.

Heil AD-1 Icom Modular w/o cap No capacitor. Use only with our 'iC' electret condenser elements. 
This has NO capacitor thus allowing the control voltage to reach the 'iC' element. 

AD-1 Microphone Adapters for Heil Boomsets
By leaving the adapters plugged in your radio, you can move from transceiver to transceiver with the Pro Series Boomset without having to rewire the microphone for each individual radio.
Features: