I've just bought the FT-4X and want to connect to a setup with different radios I have. For that I thought I could use a Motorola M1 cable, but not... The cable have a 2 pin with 2-contact areas each. The problem is when there is something transmitted to the radio it turns of and restarts. Something must be wrong with the M1 connector. When I use a single 3,5mm in the speaker outlet it works fine. I've seen some pictures of earpieces from Yaesu (ssm-512b) that seems to have 3 contact areas per pin. Is there someone who know the pinout diagram for this ht?