Cord, CD-308. Extension cord used with the T-30 throatmicrophone. The microphone plug was inserted into the jack of the extension cord (JK-48). The cord has an inline 'push to talk' switch, SW141-V, and a black PL-68 'type' jackplug for connecting with the aircraft intercom. An adjustable cord was used to hang the extension cable around the airman's neck. This is an officially modified CD-308 in that the locking 'button' on the push to talk switch has been removed. Some soiling and wear but generally in very good used condition. Stock code H21422..