[RTTY] More on Cushcraft balun

[Bill Turner]

ORIGINAL MESSAGE:

On Mon, 30 Apr 2007 16:55:57 -0400, "Joe Subich, W4TV"
 <w4tv at subich.com> wrote:

>The only concern I would have is if you are shunt feeding the tower 
>with that antenna.  All elements on the X7 appear to be insulated.
>This makes the only connection to any elements through the balun via 
>the shield of the "triband" feedline.  I've seen reports of the 
>Cushcraft balun failing under those conditions (perhaps at VE6WZ - 
>I can't find it any more).  
>
>If you shunt feed the tower, it may be wise to ground the center 
>of the reflector and director (elements 1 and 7) simply to provide 
>enough of a top hat that current is not forced through the balun 
>to the log cell.  

------------ REPLY FOLLOWS ------------

Good point, thanks. No, I'm not shunt feeding and don't plan to but I
will keep it in mind if I ever do. Depending on frequency and height
of tower I can see where there could be some extremely high voltage at
the top. 

73, Bill W6WRT