Cheap and simple mulitband antenna that works well

[m0bmn]

Hi all

 

I have just been playing with a nice and simple antenna that seems to work
very well on all the band I have tried it on so far.

Nothing to out of the ordinary but im pleased with it. Basically a
non-resonate dipole, each leg is about 26ft and it needs a ATU to get a
match on any band but my

Little K1 with its ATU gets a good match on all four of its bands
(40/20/30/18m) .

Just coax fed and up at about 20ft for testing and if I can hear them they
seem to be able to hear me.

Cheap and simple to make and works!

All the best

Paul

M0BMN

 

 


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[Lambs, Dick & Judy]

Great approach--simple things can work well.  I'd like to suggest an  
enhancement that would improve it, particularly on the higher bands:  
feeding it with balanced line (preferably open wire feedline, but  
ladder line is almost as good, and even TV twinlead isn't bad).  The  
trouble with coax feeding a non-resonant antenna (which results in  
high SWR on the feedline) is loss in the coax.  The loss increases  
rapidly as you go up in frequency and in SWR, and when you get to 10  
meters, usually most of the signal is heating the coax.  In contrast,  
balanced line is nearly lossless, regardless of SWR.  Plus, in  
comparison to balanced line, coax is heavy, expensive, hard to fit  
connectors on, deteriorates with age, and impossible to splice.  If  
the tuner doesn't have a balanced output, you do need a balun, like  
the Elecraft current balun, at the tuner.

73
Dick, K0KK


On Jan 20, 2006, at 1:19 PM, Paul Webb wrote:

> Hi all
>
>
>
> I have just been playing with a nice and simple antenna that seems  
> to work
> very well on all the band I have tried it on so far.
>
> Nothing to out of the ordinary but im pleased with it. Basically a
> non-resonate dipole, each leg is about 26ft and it needs a ATU to  
> get a
> match on any band but my
>
> Little K1 with its ATU gets a good match on all four of its bands
> (40/20/30/18m) .
>
> Just coax fed and up at about 20ft for testing and if I can hear  
> them they
> seem to be able to hear me.
>
> Cheap and simple to make and works!
>
> All the best
>
> Paul
>
> M0BMN
>
>
>
>
>
>
> --
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.1.375 / Virus Database: 267.14.21/236 - Release Date:  
> 20/01/2006
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
>  http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com

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