Pete Raymond wrote:
>
> I have a plate choke that has 104 turns on what I believe is a
> porcelain form 1"X 3 1/4" . I shorted the ends and checked it with my
> grid dipper. I found two nice dips one at 20.9mhz and another at 27.8.
> Although they are both outside the bands are they too close.
I recently went through a big 'fix-the-choke' project. I found that the
resonant points with the choke installed in the amplifier were significantly
different than they were with the choke on the bench. I ultimately bought an
Ameritron AL80B choke for my single 3-500z amplifier, and it has worked fine on
all bands 160-10, including WARC. I did not have much luck with various
homemade chokes -- once I got it big enough for 160, I kept having problems on
one of the higher bands.
73,
Vic, K2VCO
Fresno CA
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