CDV-700 Geiger Counter Headset

The CDV-700 headphone is a 10k ohm electromagnetic monaural clicker. The pulse from the audio circuit simply causes a thin metal disk to flex back and forth to make the sound.

The female audio plug on the end of the CDV-700 headphone is an Amphenol 2501F. They were a common microphone adapter back in the days before XLR became the standard.



New old stock.