[BC] Slant wire feeds vs series fed

[Cowboy]

On Wednesday 25 January 2006 08:08 am, Richard Fry wrote:
>Phil Alexander:
>>There is a SLIGHT directional effect where the feed wire field tends
>>to cancel the tower field...
>___________________
>
>Does anyone know of a shunt-fed, monopole installation where the feed wire 
>is inserted at the tower base, makes a 90-deg bend, and extends up in the 
>vertical plane on the tower vertical C/L to attach at the feedpoint?

 While I don't know of any, it's something I've wanted to try for some time.
 I really don't see much difference between that, and a standard skirt.

 In this case, that the "outer conductor" is grounded rather than the "inner
 conductor" should really make little difference in the current distribution
 in the actual radiating element, the tower.

 While I don't know of any coaxial sleeve antennae ever being used in
 the standard broadcast band, the principal is well understood in other
 services, and works quite well. ( though usually a full 1/2 wave vertical
 dipole, rather than something shorter )

 Personally, I did it on 80 meters, about 25 years ago or so, and it did work,
 but things like pattern distortion and efficiency were not something I
 studied at the time.

-- 
Cowboy

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