Beeps twice when transmitter turns on yes?
Try this for me...
Flip the transmitter over, in the lower right hole, use a phillips and turn it to the right (clock wise). It only moves a little.
I think that is pot knob boost transmitter range.
I used to get 200-300 metres and RTH was triggered. I maxed mine out and it doubled to 600m.
If they wanted CE or FC, they should of made 2 position toggle switch. Why waste a pot knob?
I think the manual is mis-interpreted. I dont have an attenuation measuring device but i think its 25mw at minimum (rotate left) and 100mw max (rotate right). Thats why it says CE to left and FCC to the right...
Some one prove me wrong please.