The CT-M11 is a convenient cable for connecting after-market equipment to the 7-pin jack of the Yaesu FTM-10 and the VX-8R/VX-8D Transceivers.
This cable can be used to connect speaker-microphones, microphones, headsets/earphones, etc…
This cable is NOT suitable for the VX-8G Dual Band GPS Transceiver.