Topband: 160m RX antenna testing surrogates?
Richard (Rick) Karlquist
richard at karlquist.com
Sat Dec 20 15:36:59 EST 2014
The AM BCB band is unique in that it is virtually
never limited by noise; rather every channel has
deep layers of QRM to deal with. The BCB is very
useful as a sanity check for beverages, because
they are still very directional in the BCB. If I
have a broken beverage, the directionality will
be off and/or signals will be down. None of this
guarantees that the beverage will actually hear
weak signals better than some other antenna.
For that, I use WWV/WWVH on 2.5 MHz. I can compare
signal to noise ratios of antennas to be tested.
I make sure that my tuned loops can tuned to 2.5 MHz.
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