‰  NOW 13 WPM  ‰   TEXT IS FROM MARCH 2014 QST PAGE 31  ‰

RADIATION FROM THE HORIZONTAL ELEMENT, THE SYSTEM ACTS LIKE AN ISOTROPIC
RADIATOR WHEN WORKING TOP BAND.  THE RADIATION RESISTANCE AND HENCE THE
ANTENNAS EFFICIENCY CAN BE INCREASED BY LOWERING THE GROUND RESISTANCE.
SHORT OF MOVING TO THE SEA SHORE, THIS IS BEST ACCOMPLISHED BY INCREASING
THE NUMBER OF GROUND RADIALS.  HOWEVER, KEEP IN MIND THAT GOING FROM 50
EFFICIENCY TO THE THEORETICAL MAXIMUM OF 100 EFFICIENCY WILL ONLY INCREASE
YOUR SIGNAL BY 3 DB, WHICH IS JUST HALF OF AN S UNIT ON MOST RECEIVERS.
ƒ  QST DE W1AW  ‰
TUNING FIRST, SET THE RESONANCE OF THE TRAP TO 3R620 MHZ IN THE SHACK.
AFTER HAVING ERECTED THE ANTENNA, TUNE THE WHOLE SYSTEM TO RESONATE IN THE
CENTER OF THE DESIRED PORTION OF THE 75 METER BAND.  THIS ANTENNA WILL
COVER ABOUT 200 KHZ WITH AN SWR OF 1 2 AND 300 KHZ WITH AN SWR OF 1 3 SEE
FIGURE 4.  NEXT, ADJUST THE LONG PART OF THE ANTENNA BEYOND THE TRAP FOR
THE PORTION OF TOP BAND THAT YOU WANT TO USE.  MEASUREMENTS ON THIS ANTENNA
‰  END OF 13 WPM TEXT  ‰  QST DE W1AW  ƒ