Thanks Ian, and for emphasis on the point!

Ian White, G3SEK wrote:


Ferrite isn't magic, so don't expect one small clip-on ferrite core to
solve all your RFI problems.

There are some RFI cases where a single clip-on core is a complete
cure... but there are many more cases where it's not enough.

To have some serious chance of curing RFI, you need to use several
turns on a fairly large lump of ferrite.

Note the recommendation about the Fair-rite 5943003801 core. This is a
large core, of the right grade (#43) for good HF performance, and also
you need to wind several turns of the phone line through it.

A choke like that will be equivalent to a string of maybe 20-30
clip-on cores... so if one clip-on core doesn't work, try harder.


My point was that if you could notice a change in the problem for the
better, you have a path down which to go. Doing a better job of solving
the problem is better than never finding which road has problems on it.



--


-- Sleep well; OS2's still awake!

Mike Luther