[South GA BBall Ref]

I have actually used the PTS in the state tournament (private school) in GA and all is correct as indicated above with the exception of the frequency of the Fox 40. Actually it is the force of the air from the whistle that causes the transmission of a signal to stop the clock. A common procedure to make sure the transmitter is working prior to the start of the game is to blow a burst of air across the microphone to stop the clock.