‰  NOW 13 WPM  ‰   TEXT IS FROM JUNE 2014 QST PAGE 37  ‰

PHYSICAL CONSTRAINTS ON THE ROOF SIZE, SO BOTH ELEMENT LENGTHS NEEDED FIELD
ADJUSTING.  OF COURSE, THE EXACT DIMENSIONS FOR YOUR SPECIFIC CONDITIONS
MAY VARY.  ROOF OBSTRUCTIONS FORCED US TO SPACE THE ELEMENTS NO MORE THAN
ABOUT 37 FEET APART.  I USED ONE CONTINUOUS LENGTH OF 14 AWG ANTENNA WIRE
FOR THE REFLECTOR, AND THREADED THE WIRE THROUGH THE HOLE IN THE CENTER
DOWEL THEN SECURED IT TO EACH END DOWEL WITH A SMALL PORCELAIN INSULATOR.
ITS A GOOD IDEA TO USE UV RESISTANT POLY CORD AS BACKSTAYS AT EACH END TO
ƒ  QST DE W1AW  ‰
TENSION THE DRIVER AND REFLECTOR WIRES SO THEY ARE STRAIGHT AND FLAT.
MATCHING THE ANTENNA WE CHECKED THE VSWR AT THE DRIVEN ELEMENT.  FROM THESE
MEASUREMENTS, JOHN, K6AM, ESTIMATED THAT FOR THE PURPOSE OF MATCHING, THE
MODELED EFFECTIVE HEIGHT USING EZNEC SHOULD BE 15 FEET AGL.  THAT WOULD
APPROXIMATELY ACCOUNT FOR ALL THE METAL AND ANTENNAS ON THE ROOF, AND FOR
THE THREE STORY BUILDING BETWEEN THE ANTENNA AND ACTUAL GROUND.
‰  END OF 13 WPM TEXT  ‰  QST DE W1AW  ƒ