I purchased a transmitter/reciever kit from www.rayming.com(RE-99 v3.0A /TX-99 v3.0), atm Im getting about 30 yards transmission distance using a half-wave antenna and regulated 5 volts source. Im looking to get close to 100 yards if possible from them. Is boosting the input voltage the only way to get more distance from the transmitter or is it possible to amplify the signal between the antenna and the encoder?