[Lowfer] LowFER Grabber and Converter
JD
listread at lwca.org
Tue Sep 18 15:23:32 EDT 2012
"...money and space aren't the problem, building a decent antenna for
LowFER, THAT'S my problem... I don't have equipment to test it, and
wouldn't know how to model it."
That's the beauty of a LowFER antenna. If you have sufficient clear,
unobstructed space to put up a simple top-loaded vertical, you don't need a
lot of equipment, and you definitely don't need to do any modeling in order
to have an efficient radiator. An everyday Radio Shack DVM can do a good
enough job of determining the antenna's capacitance to ground to enable you
to calculate the necessary loading coil inductance. Once you know that,
there are plenty of Web-based calculators that will enable you to wind a
suitable coil, not to mention plenty of variometer designs to make the
inductor adjustable. So far as tuning the finished result, the classic
yardstick with a string of NE-2 bulbs is still quite adequate for a relative
signal strength indication.
That part of LowFERing does not require high-tech for good results. :)
John
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