Dogtra RR Deluxe Launcher Electronics Dogtra RR Deluxe Launcher Electronics (transmitter & Receiver) The new bird launcher electronics from Dogtra offer a wide range of new features. They are compatible with Dogtra PL and QL launchers. Each transmitter will operate up to sixteen launchers and receiver will operate two launchers with the use of a 15-foot jumper cord. Each receiver include an attention getting quack or beep. Range is up to one mile and the transmitter is waterproof and receiver is water resistant. Available accessories include an external speaker and extension wiring cord.