Thought I posted that. Radio module is available 3.3v only.

So Pic and radio module are at 3.3v. Voltage reg in photos is 3.3v device.

I wanted to separate the modules but I can instead separate the switch and leds and leave rest at aerial.
Not ideal though. Hopefully thicker cable will ensure low volt drop for leds ...

It's only for the 'control' the 'receiver' is ok as a boxed item, the relay is needed at top of mounting pole anyway. It's a 3.3v board from Ciseco.