Cord, CD-318. 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 leather strap 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. The rubber covered cable has been 'coiled' and is rather soiled but appears undamaged. The jackplug casing is cracked as shown. Quite good used condition. Stock code H23415.