@Rex BarlowTo all Amplifier users with the FPVLR antenna!!! This is the answer I have been looking for!!!
As Per Tony of FPVLR and I quote from another thread;
"Hi, for the Taranis you MUST use an attenuator because output power is 500mw and sunhans max input is about 120mw. You'd burn the amps, no question about it!
For 3dr solo controller there is NO need for an attenuator!"
Please read the above. Tony of FPVLR confirmed that you do not need an attenuator. Your set-up is fine.