Posted by
David Cutter on
Oct 28, 2006; 1:19pm
URL: http://elecraft.85.s1.nabble.com/Attic-Antenna-tp394788p394792.html
Julian
I agree with your sentiment. My 'doublet' was nearly a loop, ie it followed
the beams around the loft. The ends were left open, about a foot apart.
David
G3UNA
----- Original Message -----
From: <
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To: <
[hidden email]>
Sent: Saturday, October 28, 2006 12:22 PM
Subject: RE: [Elecraft] Attic Antenna
> I'm surprised with all this talk of dipoles and doublets that no-one has
> mentioned loops. I'm not an antenna expert, but it has always seemed to me
> that the efficiency of an antenna is somewhat related to the amount of
> wire
> in the radiating element.
>
> You can get more wire in a loop round the periphery of an attic than you
> will get in a dipole strung in the apex of it. It may not give a 50 ohm
> match, but nor will the dipole except at one frequency. If you feed it
> with
> ladder line and a balun, or a very short length of co-ax, feeder losses
> will be kept to a minimum. That's what I use.
>
> 73 de Julian, G4ILO. K2 #392
> G4ILO's Shack:
http://www.g4ilo.com>
>
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