On 6/30/2014 9:41 PM, amdx wrote:
On 6/27/2014 10:15 AM, Ralph Mowery wrote:
I would like some opinions as if anyone could notice replacing 100
feet of
rg-213 with 7/8 inch or larger hardline would be noticiable.

One ham said when he did he could tell the differance. I just don't see
that going from about .4 db or less of loss to .15 db of loss on 80
meters
is going to be noticed. That is about like going from 100 watts of
transmitted power to maybe 105 watts or less.

In the past I have inserted some 1 and 3 db pads in line with a
receiver to
see if I could tell the differance and have a hard time telling that even
the 3 db pad makes much differance in casual operation, especially
below 20
MHz.
Maybe some have more sensitive ears than I have.



It was better, caused by the placebo effect.

It was better, caused by the extra dollars he spent.

It was better, because he thought it should be better.

Changing the coax made it 0.25db better, but he didn't hear it.



Mikek

Very well said.

I am afraid we are all guilty of that at times. I just bought a pixel
magnetic loop receiving antenna. At first blush I thought it was great.
Then I put together an A-B switch so that I can make a well thought out
review for e-ham. The loop has some advantages, especially during
electrical storm noise. However, it does not come close to equalling the
performance of a horizontal loop cut for the right frequency. I had
spent 500 dollars on this project, I wanted it to perform better and
then saw it better in my own mind. Careful measurements dispelled my
wild enthusiasm. I admit there are often times it is better at receiving
on 20, 15, and 10 than my 75 meter loop.

Michael