On Sunday, November 17, 2013 4:26:53 PM UTC-6, Channel Jumper wrote:
Why not just raise the antenna higher?

What good will that do if the noise received is a decoupling/
common mode issue?



Most ambient noise is vertically polarized.

Doesn't really matter much. He's picking it up on the outer
shield of his coax.




This is the reason why television is horizontally polarized.

So? We are not really talking about noise that is received
from the antenna itself. We are talking more about house noise
that is picked up on the outer shield of the coax, which then
pipes it right back to the receiver on the inner side of the
shield. You can have this problem with any antenna, horizontal
or vertically polarized. It is due to poor decoupling.




Use a poly phaser and ground to dc.

Huh? When did lightning protection become an issue?
Besides moving the antenna, there is little one can do to
negate noise that is actually picked up by the antenna itself.

The main reason I even talk of all this is to refute the claim
that the folded driven elements receive less noise than a
regular dipole driven element. It's not the type of element.
It's the decoupling differences between the antennas, and it
was pretty much verified when he added beads to the feed line,
and the noise was reduced.

Noise is RF same as any other signal. It follows all the same
rules. If an antenna element actually received less noise than
another, it would receive less intentional RF also.
But I'd be willing to bet he notices no lack of performance
for it's number of elements and boom length when listening to
other hams.