> Just this morning there was a discussion in a local ham
roundtable on
> the RadioWorks super80 Delta loop!
>
> The instigator said he was amazed how quiet (less noise)
the antenna was
> while still making qso's in Europe.
>
> Another explained that dipoles have noise because of the
end effect
> caused by high impedance at the ends.
> Are these beliefs accurate?
Only under inclement conditions where the antenna is
actually discharging corona. Otherwise, it is just mostly
installation luck.
A closed loop antenna does not have points sticking way out
like a dipole (hence streamers in the loop form at higher
charge levels). If it does have corona although it would
still be noisy it is unlikely to be at a high impedance
point that would maximize noise.
I doubt many people would notice the real difference, so it
is probably either that the guy got lucky and the antenna
nulled whatever noise he had or more likely just
psychosomatic improvements.
73 Tom
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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