Especially as Ten Tec holds a patent on the Jones Filter (until
2009). Interesting read.
<http://www.google.com/patents?id=blsfAAAAEBAJ>
I suspect Elecraft aren't using it (though I'd love to hear that they
licensed it). Previously mentioned on the Ten-Tec list
<http://lists.contesting.com/_tentec/2004-10/msg00106.html>
It's a compromise design. It's 8 crystals (and some varactors) doing
the work of quite a few more crystals in a small space.
I think it's a win for compact equipment (like the small Scout/Argo)
but I didn't think it was a good match to the "bigger" gear like the
Argo/Delta II.
On Aug 1, 2007, at 5:37 AM, Bob Towers wrote:
>> Bottom line, TenTec dropped the Jones filter as it was a failure.
>> Elecraft
>> uses it and has had success with it, to say the least!
>
> Ah, see my second comment! It's certainly a much better filter in the
> K2, though I would like that PBT and fully variable bandwidth on my
> K2.
> Can't have everything, I suppose.
--
73 DE N7WIM / G8UDP
Kevin Purcell
kevinpurcell@pobox.com
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