[TowerTalk] Inverter noise (was OT: Wind Turbines and Towers - Results)

[Jim Brown]

On Wed, 25 Mar 2009 10:45:37 -0400, Michael Ryan wrote:

>Brian, Call FAIR RITE TORROIDS.  They have some product(s) 
>that can help. 

I wouldn't be too sure about that. Single turn ferrite chokes 
will do NOTHING below about 50 MHz. To do anything useful on 
160M and 80M you'll need a choke of AT LEAST 12 turns around 
Fair-Rite #31 toroids. If the noise generator is big enough to 
run his home, he won't get more than a few turns through it, 
and that will be useless below about 20 MHz. 

> but patience is required to get it right

You need more than patience -- you need to understand how 
ferrites work. Studying my tutorial on RFI and ferrites should 
help a lot more. :) Cited in previous email.

73,

Jim Brown K9YC