=  NOW 30 WPM  =  TEXT IS FROM APRIL 2023  QST  PAGE 50 =

DETERMINED BY THE USUAL FORMULA OF 1/4 L 234/F, WHERE F IS THE FREQUENCY IN
MEGAHERTZ ASSUMING A VELOCITY FACTOR OF 0R95 IN WIRE.  THE LENGTH OF THE
HALFWAVE DIPOLE IS DETERMINED BY 1/2 L 468/F.  NOTE THAT BECAUSE THE 6
METER BAND IS VERY WIDE, A SINGLE DIPOLE MAY NOT COVER THE ENTIRE BAND.  IF
YOU ARE GOING TO PUT THE HALFWAVE DIPOLE RISER IN A TREE, FOR EXAMPLE, USE
INSULATED WIRE.  THE DIMENSIONS FOR THIS CAN ALSO BE DETERMINED BY USING
THE DIMENSIONS FOR A 2 METER J POLE AND SCALING UP.  THE 50 FEED POINT MAY
NEED TO BE DETERMINED BY TRIAL AND ERROR.  FIGURE 1 SHOWS HOW SUCH AN
ANTENNA CAN BE INSTALLED.  NOTE THAT THIS ANTENNA DOES NOT REQUIRE RADIALS
AND CAN BE MOUNTED AT ANY HEIGHT, ALTHOUGH I RECOMMEND THAT IT BE A FEW
FEET ABOVE THE GROUND AT LEAST.  THIS TECHNIQUE OF FOLDING THE MATCHING
STUB TO THE SIDE WILL ALLOW YOU TO MAKE J POLES ON ANY FREQUENCY, INCLUDING
HF BANDS.  RG 8X FOR SHORT JUMPERS Q WHAT DO YOU RECOMMEND FOR SHORT PATCH
CABLES IN THE SHACK?  I AM USING LOWLOSS LMR400 COAX FOR MY ANTENNA FEEDS.
SHOULD I USE LMR400 FLEX TYPES, OR SOMETHING SMALLER?  A ASSUMING WE ARE
TALKING ABOUT HF, USING THE LMR400 FROM YOUR SHACK TO YOUR ANTENNAS
=  END OF 30 WPM TEXT  =  QST DE W1AW  <