Topband: Beverage resistor triming
pbaldock at verizon.net
Tue Dec 27 22:56:43 EST 2005
I put up a beverage about 600ft long today at height between 4ft. to
6ft. I have a 1:9 transformer (although it actually measured about
1:11) at the feed end, with both sides of the transformer to the same
I read in ON4UN's book about adjusting the far end load resistor
for a low SWR. However I found the lowest SWR is with the far end
shorted to its ground rod. When the ground it is shorted I get about
1.4:1, when it is open I get about 2:1 and when it is 500 Ohm I get
about 1.7:1. I am measuring in the SWR right at the input to the
transformer with an MFJ259.
Is the tune for minimum SWR a flawed idea?
Paul - KW7Y.
More information about the Topband