Hello,
A friend bought a Remoterig "control" unit to try it out using my Kenwood TS2000. He already had a TM-D700 so he is able to use my radio. After helping him on the phone he can power up and listed to my radio no issues. But when he connects the mic on his side, PTT is immediately activated. We wired it same as TM-D710 minus the 8V connection. I have same exact mic he has and it works fine on my end, so wiring is not the issue. We spent hours reviewing the wiring and have concluded it must be a bad unit. We suspect the diodes in line to mic connector and jumpers must be either shorted or open. Anyone had similar issue? He will be calling to get a replacement unit since his appeared to be used as it was missing the jumpers.