[RFI] U-verse

[Jim Brown]

On 10/24/2010 3:28 PM, rick darwicki wrote:
> I hung tons of donuts and we couldn't get 160 and 500 watts to play.

Ferrites are useless on the lower HF bands unless you wind a LOT of 
turns through them.  For 160M, I would START with at least 24 turns on 
anything connected to a phone line, DSL or even POTS, and I wouldn't be 
surprised if more turns (or more cores) would be needed.  AND you would 
likely need a choke like that on any other wires connected to the modem.

W2RU just went through a very serious RFI to DSL issue at his QTH. It 
took lots of chokes PLUS serious shielding of the modem.

73, Jim K9YC