[Elecraft] Update to Tutorial on RFI, Ferrite Chokes, Audio, and Choke Cookbook

[Bob Nielsen]

On Jul 25, 2007, at 6:07 PM, Jim Brown wrote:

> I've just posted a new version of my tutorial on RFI, Ferrite Chokes,
> Baluns, and audio for hams. It has the same filename as the original,
> but the title shows Rev 1, 25 Jul 07.
>
> The new stuff is primarily confined to pages 29-36, which addresses
> choke baluns wound with big coax (RG8X, RG8). There is a major update
> to the Choke Cookbook, based on extensive measurements of these
> chokes. There are also some additions to the appendices, and a few
> tweaks and typos fixed throughout the document.
>
> This is the first major update since 20 Jan 07. If you're winding any
> coax chokes, you NEED this update.
>

Perhaps a URL would be helpful:  <http://audiosystemsgroup.com/RFI- 
Ham-R1.pdf>  (from your message on the Tower Talk list).

73 - Bob, N7XY