[TowerTalk] Wilson DB54 and its problems

[n8de at thepoint.net]

I've been mulling over a possible{?} solution to interaction between
2-band yagis on one boom.

The idea is this:

Put the elements perpendicular to each other, but rotate the boom so
elements are 45-degrees to the ground.  Sort of like the letter X.

Perhaps someone on this reflector could model it and see what it looks like.

I'm curious as to what the pattern might look like, and gain, F/R, might
be.  The results might be interesting to us all.
Thanks
Don
N8DE
>
>
>> From: Mark - AA6DX
>>
>> What a diff 6 feet make ... had a Wilson DB54 with 40 foot
>> boom, just was not as hot ..
>
> The Wilson DB54 was a dual band 20/15 (5 el/4 el) antenna.  As
> I recall the 20 meter elements were fairly evenly spaced to
> provide "room" for the 15 meter elements.  As I recall, the
> Wilson antennas also used gamma matches that were not the best
> ever designed.
>
> If it were modeled using modern software, I suspect the 20 meter
> section would be far from optimum and the 15 meter elements
> introduce destructive interaction.
>
> YO shows a relatively insignificant .5 dB increase in gain between
> optimized 5 element designs on 40 and 46 foot booms.
>
> 73,
>
>    ... Joe, K4IK
>
>
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