[BC] Elevated radials

[Cowboy]

On Tuesday 26 June 2012 07:59:28 pm Gary Peterson wrote:
> Would there be any downside to feeding the
> insulated counterpoise against a grounded tower?
> Maybe this would allow the grounded tower to be
> the target for lightning and suffer fewer
> problems.  

 Methinks the grounded tower would have the same issues
 as far as lightning as any grounded skirted tower, but I could
 be wron..... er..... "mis-informed". ( it's election ad season )

 As far as "feeding" the ground plane against a grounded tower,
 I fail to see any significant difference from what we do now ?

 We do feed both the stick, and the ground plane array, and we
 feed them out of phase, one connected ( via network ) to the
 center conductor, and one connected to the coax shield.

 We often fall into the trap of thinking that the coax shield doesn't
 carry signal, but it does ! It carries the same "power" as the center
 conductor, but merely connects to the antenna differently.

 However, from a practical and electrical perspective, you are
 proposing to feed an elevated counterpoise with the center
 conductor, presumably through a network, and tieing the coax
 shield to the grounded tower, also presumably directly and
 without a network.
 I can see no reason this wouldn't work ( radiate ) as well as any
 conventional feed method.
 The counterpoise would still cancel its own radiation to the
 distant observer, and the tower would not.

-- 
Cowboy