Well, I have this unit on the repair shelf for a since 2015/07/22 So after much sawing and filing I got the NEMA socket to fit in the damn hole. In hindsight, I am glad I used the spade lugs! I then use a Molex type plug set with some wire on it so that I can work on the unit while the back is off.

I also replaced the 600ohm solid wire with stranded wires as well.

The 50ohm  cable is not grounded at the circuit board but only at the connector, to reduce ground loops


Good Luck Finding This

50ohm cable @ PCB



50ohm cable @ connector