OK, well…I guess I’ll be buying a SignalLink like everyone else, because I cannot get the Plug-And-Play to key up the FT-7900. No matter what I do, nothing works. Sure, the PTT lamp lights on the PNP when I engage TX in FLDIGI, but nothing happens to the radio. And I know the PNP itself works because I’ve been using it for months with my FT-450D.
There’s no rig defined in FLDIGI because there’s apparently no rig-level FLDIGI support for the Yaesu FM rigs at all. Which is fine, because so far as I can tell, the PNP ought to be triggering PTT just by taking RTS high. Other than finding the FT-7900R in West Mountain Radio’s compatibility list for the PNP, I can find NOTHING indicating that anyone has actually tried the combination for NBEMS.
I imagine it would work with my FT-857D, but that rig is a little big and a lot overkill for what I want to do with that box.
So I’m going to order a SignalLink and associated cable for the FT-7900, and I’m going to install a PS/2 passthrough connector in the lid of the box so I can easily change from the packet TNC to the SignalLink as required. I hate doing it by using patch cords but I haven’t found an appropriate switch for a PS/2 line. Lots of KVMs have them, but again, that’s overkill for what I want to do.
Arghh.