FW: [Antennas] What is Beldfoil shield?

[Sam Morgan]

Eric Lemmon wrote:
> Sam,
> 
> The answer is found in the glossary in the back of a Belden catalog:
> "BELDFOIL- A Belden trademark for a highly effective electrostatic shield of
> reinforced metallic foil."  It comprises a very thin aluminum foil bonded to
> polyester tape.  When properly applied, it provides 100% shielding.  Most
> Beldfoil-shield cables include a stranded bonding wire that is in continuous
> contact with the aluminum foil.  Due to the possibility of dissimilar-metal
> corrosion, Beldfoil-insulated cables should be used with caution in moist
> environments.
> 
Well I guess the use of that cable outside is not the way to go. It doesn't rain 
much here in Texas, but sometimes it does.

I have heard of running 2 coax lines in parallel to form a shielded feedline, 
but I guess just a balun at the dipole feedline might just take care of the 
thing I had read about unbalanced feedlines being more noisy? Or would it, or is 
that even anything I need to address?
-- 
GB & 73's
KA5OAI
Sam Morgan