I am ecstatic to find that Chirp now supports the FT-7100M, despite it's outdated and obsolete. Has anybody out there tried to program it yet? I cannot seem to get Chirp to talk with mine. Looking at the manual, the clone cable is wired up as shown below: I assume the diagram is from the viewpoint of the radio, and not the cable end. Instead of the other end plugging into a separate radio, it's plugged into a USB adapter using the SiL CP2102 chipset. I have the PKS pin connected to the RX pin of the USB adapter, and GND to the GND pin. Using the clone directions, holding down REV and TONE as I turn the radio on, I push TONE for the radio to transmit, and the radio itself gets an error. The USB adapter works with both my Baofeng and FT-60 radios without issue, and the drivers are current, so I don't doubt they're working. On a whim, I swapped pins into the radio, and no help. I have also run the PKS pin to the TX pin of the adapter, just to say I did. The RX light on the adapter lights up until I try to clone from the radio. My cable is just a simple two conductor coax, a small gauge headphone wire. The GND terminal uses the shield, and the PKS uses the center conductor. Off hand, am I missing something? Anybody have a cable that works for this radio? Anybody tried the RT System cable with Chirp successfully?