[Antennas] WINDOM

Sun Oct 1 18:11:46 EDT 2006

 >I have used the windom, single wire, and balun with coax but only to 
cover 80 thru 10. My windoms worked as well as any normal dipole. The 
only advantage I saw was that the windom was more of an >all band 
antenna without need for a tuner. Even then some bands had swrs above 2.0.
 >
 >Regards,
 >Frank Kamp
I've been considering trying one for just this reason. I live on a very small lot, but can hide one wire antenna in the trees. From what I've read the off center fed "windom" should be easier to tune by the internal tuner of my '746 for all bands. All bands actually meaning 80 through 20, I have a vertical for 15 & 10 that works well, and yagis for VHF/UHF. Not enough room for top band... Although I have given some thought to an inverted "L".
I once had a 135' center fed dipole, fed with about 50' of 450 ohm ladder line, to a balun and probably 20' of coax to the rig. This worked well on 80, 20, and above. But, the internal tuner had a hard time matching on 40. [sometimes it would find a match, but start "searching" again after a few seconds of key down]
73
Dan
 
K9ZF /R no budget Rover ***QRP-l #1269 
Check out the Rover Resource Page at: <http://www.qsl.net/n9rla> 
List Administrator for: InHam+grid-loc+ham-books 
 
frank wrote:
> Danny Richardson wrote:
>> To add my two-cents I too have used an OFCD, however, I fed it with
>> open line all the way to the shack. The antenna was at about 65-70
>> high and the length of the transmission line was about 60-65 feet.
>> The only problem I experienced was with common mode current on the
>> transmission line. At lower power levels this was not a problem but
>> increasing the power over about 500 watts resulted in working every 
>> electrical/electronic appliance in the house. :-(
>>>> I went back to a balanced (doublet) antenna and my common mode
>> problems went away.
>>>> I have couple of pennies too.
>> I have used the windom, single wire, and balun with coax but only to 
> cover 80 thru 10. My windoms worked as well as any normal dipole. The 
> only advantage I saw was that the windom was more of an all band 
> antenna without need for a tuner. Even then some bands had swrs above 
> 2.0.
>> I have settled on dipoles for the lower frequecy bands. I have one 75 
> meter dipole that is driven and three passive half wave lengths of 
> wire hanging in close proximity. The mess covers 75, 80, 40, and 30 
> with very low swr and no tuner. All four lengths of wire are spaced 
> about 6 inches appart and only the 75 meter element is driven. All 
> mounted in the inverted vee configuration. Seems to work as well as 
> seperate dipoles.
>> Regards,
> Frank Kamp
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