[Elecraft] End fed antenna - length and SWR

[Dick Lindzen]

All these antennas are easy to model with EZNEC.  You may find some 
of the results surprising.

73, Dick WO1I

At 11:55 PM 10/8/2013, Rick Dettinger wrote:
>I scaled the 44 feet up 4 times to 176 feet to get a reasonable 
>match on 160 meters with my poor ground system.
>Its 55 feet high with the rest sloping somewhat down to about 25 feet.
>It is tuned at the base with a remote coupler.  There is 140 feet of 
>coax berried from the coupler to my 3rd floor (loft) shack.
>I am happy with the performance.
>Before I built the remote antenna, I had an end fed wire with no 
>coax tuned in the shack.  It was fed with a ground wire hanging down 
>the house from the peak.  It worked OK on transmit, but was noisy on 
>receive.  Getting the feed away from my house really knocked the noise down.
>
>73,
>Rick Dettinger  K7MW
>
>
>
>
>On Oct 8, 2013, at 8:25 PM, Ariel Jacala wrote:
>
> > My version using the same matchbox is 44 feet long and tunes well 
> 40 - 6 meters and a piece of cake for the KX3.     It is loud on 30m
> >
> > Ariel NY4G
> >
>
>______________________________________________________________
>Elecraft mailing list
>Home: http://mailman.qth.net/mailman/listinfo/elecraft
>Help: http://mailman.qth.net/mmfaq.htm
>Post: mailto:Elecraft at mailman.qth.net
>
>This list hosted by: http://www.qsl.net
>Please help support this email list: http://www.qsl.net/donate.html