[RFI] DSL RFI Problem Solved

[Jim Brown]

On Fri, 20 Aug 2010 14:47:59 -0600, Larry Benko wrote:

>I agree with the comment Jim made 
>about using #31 material (u ~= 1500) with many turns.

To expand on that, I simply recommended a common mode choke that I 
thought would work, with a material that is commonly available and 
optimized for that part of the frequency spectrum. Bill checked the 
cost of buying one or two #31 cores, found another suitable core, 
and wound a suitable choke with it based on good advice from N6PE 
to use one pair of CAT5 to wind it. That's really good advice for 
two reasons -- first, one pair of CAT5 is small enough to get a lot 
of turns through a core, and second, it's high quality, wide-
bandwidth twisted pair that's unlikely to degrade the DSL signal. 

73, Jim K9YC