Topband: Cat5 as Feed Line.

[Mikek]

Hi guys,
After describing what I had to a fellow ham, he noted I did not have an 
Isolation transformer at my radio.
In a hurry I just connected the Cat5 to the radio input. (I'm sure many 
will say, no wonder you have feed line pick up.)
I added a 100 ohm to 50 ohm transformer at the radio input and it made a 
difference.
As a test I did terminate an unused pair in the antenna box with a 100 
ohm resistor, and then used the 100 ohm to 50 ohm transformer at the radio,
with that I only had three AM stations that moved the S meter needle vs 
the more than 37 I had without the isolation transformer.
So my feed line now has little signal ingress. I can't yet say I have 
any F/B ratio on the antenna, but I expect that is frequency dependent.
I do have a lot of static below 1000kHz, but S meter is zero above that. 
I'll turn off breakers later in the day to see if that is from my home.
Mikek KF4ITA