Headset Adapter for ICOM ®A2, A20, A21 Transceivers: Twin sockets accepts standard .25-Inch(PJ-055) and .206 (PJ-068) plugs converting to ICOM® A21 plug. The PA-81 adapter must be used with an external PTT for it to work properly. |
Use Part# 11-09131 for the PTT switch for these Icom radios.