hello all i am working on interfacing a tk-780 with a gm300 which will be mounted in my car for crossband repeat
so the problem is as follows when the gm300 rx the tk-780 tx but there is no audio or depending on the setting the mic on th tk works for audio so you key on a ht to the gm300 and speak in to the mic on the tk and it transmits that audio unless you have it disabled then you get no audio but i know that i am getting audio from the gm300 to the kct-19 i have tested it i have tried for hours and have tried a tk-880 too same issue i have tried both pin nine and pin five on the kct-19 and many hours checking and testing different switch settings in the software it just won't work but the other way back to the gm300 (uhf) works perfectly, so looking for some pionters, my references are the pyramid svr200 to kct19 wiring plan and the tk-780 service manual and its european so its kpg-60d any thanks in advance
