About Increase RF signal
I use this since two years ago for increase a RF signal.
A link to buy:
http://www.thesourcecc.com/estore/Produ ... ct=1518951
Hint:
I'm tired to change little battery each 2 months.... so I install this inside my 8811. with his 4 real battery. Just connect a real battey to transmitter with two wires and connect a third wire to next battery.
Note that you have to install electrical tape between two pin (Negative current and third waire) for isolate them !
Inside:
Under Battery Door :
Note that you have to install electrical tape between two pin
It run fine over 50 feets !