I have a TK2180 and a TK2140. The 2140 resets itself after a certain amount of transmit time. I have a TK2180 works great and I like alot, Wont transmit with my KMC25 Mic. I have 2 mics tried them both. I can hear audio out of the speaker mic but cannot transmit at all. The PTT on the radio works fine.
Yeah I was thinking Battery with the TK2140, thanks for confirming my suspicion. As for the TK2180 checked KPG89D the latest version KPG89D dont see anything about enabling speaker mic. I recall it did work at one time without any enable as I used it on MURS to talk to the TK2140.
Make sure that the speaker mic connectors are lining up on radio and make sureit is pretty tight i had same problem and had to make it snug for it to work correctly...