=  NOW 25 WPM  =  TEXT IS FROM APRIL 2023  QST  PAGE 50 =

PROVIDES LOW LOSS ON BOTH TRANSMIT AND RECEIVE.  ANY SHORT PATCH CABLE WILL
HAVE LOW INSERTION LOSS.  THE DIFFERENCE IN LOSS BETWEEN AN RG 8X JUMPER
AND AN LMR400 JUMPER OF THE SAME LENGTH IS NEGLIGIBLE, ONLY A FRACTION OF A
DECIBEL.  THIS IS NOT ENOUGH TO MAKE A DIFFERENCE EVEN IF YOUR AMPLIFIER IS
SEVERAL HUNDRED WATTS.  IF YOU ARE RUNNING THE FULL LEGAL LIMIT, ID STICK
WITH THE LMR400 PATCH CABLES TO AVOID THE INEVITABLE HEATING IN THE SMALLER
COAX.  FOR EXAMPLE, AT 50 MHZ 6 METERS, RG 8X CABLE LOSES 2R5 DB PER 100
FEET.  A 3 FOOT PATCH CABLE IS 0R08 DB OF THIS COMPLETELY NEGLIGIBLE
OVERALL.  READY MADE PATCH CABLES ARE AVAILABLE FROM MANY SOURCES BUT ARE
EXPENSIVE.  YOU CAN SAVE MONEY BY MAKING YOUR OWN.  DAISY CHAINING DSP
FILTERS DOES NOT HELP WITH NOISE Q WOULD ADDING AN AUDIO DIGITAL SIGNAL
PROCESSOR DSP FILTER AT THE EXTERNAL SPEAKER OUTPUT REDUCE S7 TO S9 NOISE
WITHOUT DISTORTING THE AUDIO?  I HAVE A TRANSCEIVER WITH AN ADJUSTABLE DSP
=  END OF 25 WPM TEXT  =  QST DE W1AW  <