Anybody with a spare dual spkr/mic plug for the Icom older HTs, or one on a destroyed mic they would be willing to cut off and sell to me ? I believe they are a pair of 2.5/3.5mm mono plugs. Anyway, if you have one you know what it is. Am building an interface for a Plantronics telephone headset. 73, Dick KF4NS St Petersburg, FL 33714 USA Keep The Glow!