TSU-5Dpx Dual Tone Decoder for the TS-790A.
[TSU-5Dpx]

Hello.
I have installed the TSU-5Dpx in a Kenwood TS-790 Europaen Version and it works UFB! It was not so easy then the PCB Board from the E-Version it's a litel bit differend as the A-Version PCB. When you like to install the TSU in a E Version, follow the given install instruction. Note ther is no Jumper to cut off. You must cut the two green wires wher are locatet near the contacts were you installed the TSU Wires. One on the left and one on the right side.
Note also that you need a 10k pot resistor to install in the wite NF Wire, near to the front panel to turn back the NF Level from the tone-generator who makes befor the 1750Hz Tone.
In case you have any question, please feel free to contact me. You will finde my E-mail at qrz . com when you are looking for HB9TQD. Maybe I can give you a hint.
Vy73 de Steven, HB9TQD