Carl says
>Agreed. That is why I often find a 1dB NF preamp very usefull on
15-10M.
With a 4 ele yagi at 68 feet, 2.2dB of cable loss ( measured) and an 8dB NF
receiver, I've never yet not managed to measure a minimum 4dB increase in
noise in switching from a 50 ohm source to the antenna on 10m. That's in a
rural QTH, beaming in the quietest direction late on a winter's night with
the bands closed above 10MHz. So 1 dB NF wouldn't help me. Some Collins
studies years ago suggested that 8dB was all the NF needed at HF, even on
short whips.
But returning to the thread...........when you have a good antenna, then you
want a good amplifier. I claim I cause less QRM by calling once than by
calling half a dozen times.
Even then, you can get 6dB by good operating as opposed to bad!
73
Peter G3RZP
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