MFJ-1262M Microphone Switch Box 8-pin round
The MFJ-1262M lets you switch between any two microphones (with RJ45 modular connectors) by simply pushing a button and using them on a transceiver.
You can even plug in an external foot or hand operated PTT switch. The MFJ-1262M also has sockets for external speaker or headphones. There is a built-in volume control for the headphones. You can configure the internal jumpers so that it will work with most radios - Kenwood, Yaesu, Icom and Alinco.