I find that the pair of 250's in combination with my DSP (option
3 upgrade) allow me to dig out more of a weak signal with QSB,
QRM and QRN. Two nights ago, I heard Fran KA3WTF (is he still
the world record holder for miles/watt?) and he was just barely
459 or so. When he finished with his QSO, he was only about
339, and I took time to use both 500's and both 250's to see
what I could do. I took the PBT and adjusted for best signal
to noise as far as my ear could get, then used the DSP. I found
I could copy more characters with the pair of 250's, and it was a
case of mostly storm QRN and weak signal with QSB that I had to
overcome. I would say that the difference was in a few db of
extra hearing power for my ears. Very hard to quantify, and I
would not argue if you told me it was mental preference, but it
made the difference for me, probably a couple of characters
every minute.
Clark
WA3JPG
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