‰  NOW 30 WPM  ‰  TEXT IS FROM SEPTEMBER 2017 QST  PAGE 47‰

BAND.  IT IS ONLY EFFECTIVE IF THE SIGNAL TO NOISE RATIO IS QUITE HIGH,
BECAUSE THE WIDER RECEIVE BANDWIDTH ALSO INCREASES THE NOISE LEVEL.  I ALSO
CHECKED IN WITH MY USUAL AM CRITICAL LISTENERS ON THE ANTIQUE WIRELESS
ASSOCIATION WEEKLY 75 METER AM NET.  THEY ALL THOUGHT MY SIGNAL SOUNDED
GREAT.  THEY WERE USED TO HEARING MY 1950S ERA, 100 W OUTPUT, E. F. JOHNSON
VIKING II TRANSMITTER WITH A D 104 MIC.  THEY WERE VERY IMPRESSED WITH THE
IMPROVEMENT IN SIGNAL STRENGTH AND AUDIO QUALITY FROM THE K7DYY
TRANSMITTER.  I FOUND THAT IT IS IMPORTANT TO USE THE SUPER SENIOR WITH A
LOW SWR ANTENNA SYSTEM.  THIS NET SESSION OCCURRED DURING SOME FAIRLY HEAVY
RAIN, WHICH RESULTED IN SWR CHANGES TO MY 80 METER, CENTER FED HALF WAVE
ANTENNA THAT IS FED WITH WINDOW LINE.  WHILE I WAS TALKING, THE BIRD POWER
METER INDICATED INCREASING FORWARD POWER, DUE TO THE REFLECTED POWER FROM
THE MISMATCH.  I WASNT WATCHING IT CLOSELY, AND SURE ENOUGH, IT QUIETLY
DROPPED OFF THE AIR.  AFTER I NOTICED THIS, I REDUCED THE CARRIER POWER TO
250 W AND HAD NO FURTHER PROBLEMS.  I ALSO NOTICED THAT, AT TIMES, THE
POWER OUTPUT WOULD GRADUALLY RISE DURING LONG OPERATING SESSIONS.  ANYTHING
‰  END OF 30 WPM TEXT  ‰  QST DE W1AW  ƒ