[R-390] Filters

[Graham Baxter]

There does seem to be a lot of interest in the doughnuts at the expense of
the intriguing physics of the filter!

It is my recollection that the filter was completely symmetrical. If you
can't see the wire, it is probably broken. That is sad news, but hopefully
someone will be able to supply a filter with bad coils but intact mechanics.

Graham
G8OAD

On 16 February 2013 19:55, quartz55 <quartz55 at hughes.net> wrote:

> I get the feeling like no one is really reading my posts so I may quit
> dealing with it, too bad for someone that wants to rebuild filters.  But I
> will post pictues on my photobucket account for anyone that is interested.
>
> Here's a picture of what I think is the center wire attached to the second
> resonator disk on the top (output) end of the filter.  On the bottom end
> (input), I don't see the wire like that, but I have not yet pulled out the
> coils on that end, the center wire may be coming off the end disk there and
> that's why I don't see it in the resonator disks.
>
>
> http://s251.beta.photobucket.com/user/DogTi/media/R390A/filtertopcenterwire_zps1e973e91.jpg.html?sort=3&o=0
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