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Date: | Wed, 18 Jun 2008 22:04:49 +1000 |
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someone suggested to me an air wound balun. a 4:1 balun wound round a
bit of pvc as purely a current balun and not a voltage balun. would that
help at all?
Shaun
web sites:
http://www.myspace.com/blindmanshaunoliver
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skype: brailledude
On 18/06/2008 10:01 PM, the old scribe known as Howard Kaufman was able
to impart this pearl of wisdom:
> You have quite a challenge there. It will make a great cloud burner, but
> will be good for local work, and quiet. The disadvantage of coax, is though
> you can tune it, that only means the transmitter is happy. Very little of
> the reflected power will get to the antenna, except on a resonnent
> frequency. For a loop, I believe that means about 250 feet of wire for an
> 80 meter loop. That means 62 feet on a side. That thing is so close to the
> ground, you won't have enough feed line for an apropriate length. Their are
> many fine books on antenna theory, and one would be helpful. Effecient
> radiators are not random in their creation.
>
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