Topband: New Subject: 160M array feedline question

[Mark Robinson]

Roger,

Take a look at this. I am thinking of building one this summer and hang 
it from a tall tree.


https://www.yccc.org/Articles/double_l.htm


73 Mark N1UK  G3ZZM


On 23-Mar-21 6:33 PM, Roger Kennedy wrote:
> Guy (K2AV) - I really liked your explanation about the function of a radial
> field on a 160m vertical . . . and how the radials don't actually radiate.
>
> But I've often thought about the other extreme . . . I have a homebrew 2m
> Ground Plane on top of my mast . . . just a quarter wave vertical . . . and
> 3 quarter wave radials sloping down about 45 degrees.
>
> Now if those radials were vertical, it would really be a vertical Dipole . .
> . i.e. the radials would be radiating.  Whereas if they were horizontal, I
> guess they wouldn't be.
>
> You get my question . . . what really is the difference between the 3
> different radial situations?
>
> And here's another question . . . rather than all the issues of radials and
> matching, has anyone ever used a Vertical Dipole on 160m ?
>
> Sure, you're not going to have a 260 ft vertical . . . but suppose you had a
> 100ft support, so that you could have 50 ft vertical legs either side of the
> coax feeder, and then just bend the legs at right angles at the top and
> bottom to make up the length (linear loading) - maybe running in opposite
> directions.
>
> I would have though that would be quite an efficient antenna?  And
> presumably (just like any dipole) it would work even better if the ground
> underneath it was very poor (in my opinion)
>
> Roger G3YRO
>
>
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