On 1/16/2011 11:24 AM, bpnjensen wrote:
Question to those who may have used one - Do inline isolators work
well on RX? Such as those sold by Radioworks?

Thanks,
Bruce Jensen


It sounds like, if you use an outdoor antenna, you need a 9:1 balun/unun
(depending on antenna design/length) at the point where the feed line
feeds the antenna, with the shield grounded at this point to a good
earth ground.

Next, a 1:1 unun (50 to 50, or 75 to 75, ohm) between the coax and the
receiver, with a good earth ground on the receiver.

This should remove any common mode noise on the shield of the coax.
This is what I use ...

If you use a balanced antenna, you need a balun at the feedline where it
feeds the antenna, if you use a longwire/unbalanced-antenna, you need a
unun at this point.

Regards,
JS