INRAD series M-FH adapter for FlexRadio 6400 and 6600 series transceivers only.
For use with the INRAD W1 headset.
Input, 1/8" mono receptacle for W1 transmit audio. Output, 1/8" stereo male plug TRS wired correctly for FlexRadio 6400/6600 series rear panel microphone jack. PTT connector not included. Connect a hand or footswitch directly to the female mono RCA PTT jack on the back of these transceivers.