=  NOW 35 WPM  =  TEXT IS FROM MARCH 2022 QST  PAGE 48 =

CONNECTIONS IN ADDITION TO THE TWO SO 239 SOCKETS MENTIONED BEFORE, A THIRD
SO 239 SOCKET LABELED TRX ON THE REAR PANEL IS USED FOR CONNECTION TO YOUR
TRANSCEIVER OR RECEIVER.  WHEN TRANSMITTING, THE PTT CABLE CENTER PIN MUST
GO TO GROUND AND THUS PROTECT THE QRM ELIMINATOR.  THE OPERATING
INSTRUCTIONS INCLUDE A WARNING TO NOT USE THE MICROPHONE PTT LINE FOR THIS
FUNCTION.  MOST RADIOS HAVE A PTT CONNECTION ON THE REAR PANEL FOR KEYING
AN AMPLIFIER USUALLY A PHONO JACK OR SPECIFIC PINS ON AN ACCESSORY PORT.
THATS THE CONNECTION THAT SHOULD BE USED TO TRIGGER THE QRM ELIMINATOR TO
MAKE SURE THAT IT SWITCHES SAFELY BEFORE THE TRANSCEIVER STARTS
TRANSMITTING RF.  ACCORDING TO THE MANUAL, TRANSCEIVER POWER IS LIMITED TO
200 W, WHICH IS FINE FOR MOST RADIOS TODAY.  IF YOU USE A POWER AMPLIFIER,
INSTALL THE QRM ELIMINATOR BETWEEN THE TRANSCEIVER AND AMPLIFIER.  HOWEVER,
YOU MAY DAMAGE THE QRM ELIMINATOR IF HIGH POWER RF FROM THE TRANSMIT
ANTENNA COMES BACK INTO THE RECEIVE ANTENNA PORT.  ITS FEASIBLE TO USE THE
QRM ELIMINATOR IN A HIGH POWER STATION, BUT IF YOUR ANTENNAS ARE CLOSE TO
EACH OTHER, CONSIDER ADDING AN RF LIMITER TO PROTECT THIS INPUT THESE ARE
TYPICALLY USED WITH LOW NOISE RECEIVE ANTENNAS TO PROTECT THE RECEIVER.
OPERATING FREQUENCY RANGE IS 3R5 TO 60 MHZ.  OPERATING INSTRUCTIONS IN
ADDITION TO THE THREE KNOBS, THE FRONT PANEL HAS A RED PUSH BUTTON LABELED
=  END OF 35 WPM TEXT  =  QST DE W1AW  <