Lyndel McGee, Great writeup!!! and totally agree.

A trick that Xantech told me years ago was to use a Mono Jack into the RFX9600 however on the Xantech block go into the screw terminals IR / GND.

I have since realised that its also a good idea to protect the device (RFX9600 in this case) by adding a 1N4001 (or equivalent) diode in case you accidently short another part of the Xantech circuit..

Just a question can emitter suffer from Plasma interference?

During my elaborate testing I discovered that an emitter install on the front of a plasma causes the Zone to light up like a Christmas tree.

Emitter is brand new and tests OK with a multimeter.

If it is connected into the back of the new RFX9600 it is OK, so I have done this as its in that zone. Just curious to ascertain the cause.