‰  NOW 25 WPM  ‰  TEXT IS FROM JULY 2014 QST  PAGE 55‰

DIFFERENT LENGTHS OF MATCHING SECTION TO GET A GOOD MATCH, IF YOU WANT TO
MATCH TO COAX.  ONCE YOU HAVE CONFIRMED THE CONNECTIONS, I WOULD LEAVE THE
ANTENNA LENGTH AS IS AND ADJUST THE MATCHING SECTION AN INCH AT A TIME FOR
THE BEST MATCH.  USING THE IMPEDANCE PREDICTED BY EZNEC, I FOUND THAT TLW
PREDICTED THAT 16R1 FEET OF WIREMAN 551 OR 554 450 WINDOW LINE WOULD
TRANSFORM THE IMPEDANCE TO ABOUT 29 A 50 SWR OF 1R7 1.  WHILE THAT SHOULD
WORK WELL IN MOST CIRCUMSTANCES, IF YOU WANT A CLOSER MATCH, 600 OPEN WIRE
LINE AS DESCRIBED IN REFERENCE 1 WILL DO BETTER, AND 13R75 FEET SHOULD GET
YOU TO ALMOST EXACTLY 50.  Q ANY IDEA WHAT I CAN DO TO ELIMINATE A NOISE
THAT I HEAR THROUGHOUT THE SPECTRUM FROM 1R8 TO 30 MHZ?  THE NOISE STARTED
RECENTLY AND EXISTS FOR ABOUT 3 DAYS, THEN GOES AWAY ONLY TO RETURN LATER.
I DONT KNOW IF ITS AN INTERMODULATION PRODUCT GENERATED IN MY RECEIVER OR A
SPURIOUS SIGNAL FROM A NEARBY SHORTWAVE BROADCASTER.  IF I DISCONNECT THE
‰  END OF 25 WPM TEXT  ‰  QST DE W1AW  ƒ