I have an FT-891 radio and purchased a 2m transverter from Transverters-Store.com quite a while back. I think the time has come to assemble this transverter kit so I have been reading through the very short instructions. I'm considering what to do about the PTT line. The FT-891 has a TUN/LIN port on the back for using an amplifier (8 pin mini-DIN). Two of the pins are labeled TX INH and TX GND. The transverter needs its PTT line pulled low to activate, is anyone aware of what these two pins do while keying the transmitter? I don't have an 8-pin mini-DIN cable yet so I'm not sure I can probe those ports effectively to test.