On Wed, 16 May 2001 K7LXC@aol.com writes:
>
> Remember that the only antenna parameter hams can measure is SWR so
> some of us tend to become relatively anal about *low* swr so anything
that
> upsets it - no matter how minor - is viewed with some concern.
>
> Cheers, Steve K7LXC
> Tower Tech
>
AMEN Steve !
Allow me to give you a couple of examples of high SWR antenna
performance.
#1 After a 30 minute ragchew and some persuasion, I convinced
an African station I was working on 15M to try 17 and then 12 M
with his 15M dipole. He had a great signal on 17M, tuning the
pi-network of this TS-830 for maximum forward power. We then
tried 12M (WAY past his usual bedtime) and again made contact.
He was so excited he asked if I thought the 15M dipole would work
on 30M where it was only half size. I was more than game so again
we QSYed and made contact. He stayed on 30M for another hour
handing out the first 30M contacts (as far as I knew) to several
European and North American callers.
#2 My 160M elevated GP also supports one end of my EU / S.Pac.
80M dipole and has an 80M inverted vee on a pulley for JA / SA.
During the winter months I like to have my 80M inverted Vee
available for the SE Asian openings at Sunrise and Sunset.
Yes, it severely detunes the 160M GP. I just tune for maximum
forward power (1400W) and accept the high 'reflected' power (400W).
It didn't seem to hurt me when I worked the ZD9, ZL9, and XZ
DXpeditions.
Bottom Line:
An antenna does NOT need to be resonant (or matched)
to radiate. As long as Nothing ARCs and Nothing MELTS,
NO HARM DONE, at least with 3-500 glass tubes.
de Tom N4KG
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