Topband: Anyone with experience using CAT6 as feed line.

[ly2ij at qrz.lt]

Hi Mike, 

I wanted to try and raised similar question in 2011: 

http://lists.contesting.com/archives//html/Topband/2011-04/msg00027.html


It was some theoretical discussion but no practical experience, so I
decided to try myself. It was temporary installation for 1 weekend, so
use regular indoor CAT-6 cable, two reversible Beverages made from same
cable and one such cable (200 m) used as feeder. All pairs used at
"feeder" - 2 pairs for one Beverage front and back, other 2 pairs - for
other. Load resistors - at direction switch at radio. All cables were
laying on grass- sort of 20-30 cm up from the soil. Worked very good to
my understanding in middle of summer QRN conditions.  

Short story is here: 

http://lists.contesting.com/archives//html/Topband/2013-02/msg00148.html


In your case - BOG has much lower output even to my Bev on grass - so it
much more sensitive to noise pickup. Together with not always
predictable BOG behavior - see all BOG related posts in this mailing
list. 

73 GL 

Arunas, LY2IJ 

2020-05-17 23:19, Mikek rašė:

> Did a first test on a BOG, I noted it didn't have a f/b ratio.
> Then I noted I connected the wrong pair to the radio.
> That means the twisted pair is picking up signal.
> I terminated it hoping that would quiet it, It didn't.
> I corrected the wiring error, But the feed line pickup
> makes the BOG useless.
> 
> On a previous BOG I used #18 twisted speaker wire and it
> picked up very little RF when connected the the radio.
> 
> Do I need to do anything with the unused pairs,
> that would help?
> 
> Any thoughts on how to prevent RF pickup by the feed line?
> 
> Mikek KF4ITA
> _________________
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