Julius N2WN wrote:
I'm looking to modify a MFJ-1025 (ala W8JI) and need
to build a couple bandpass filters. My first thought
is to "steal" the filter from the 160M Elecraft board,
heck it works great. I do not have the parts for that
on hand. I do have the parts for the filter in the
KPA.
Other than power handling, what are the differences
between the two? Is the shape significantly different?
I don't have BCB issues at this point, but the preamp
in the MFJ is wide open to out of band noise.
---------------------------------------------------------
Possibly I misunderstand you Julius, but the filters in the KPA100 working
at 80m - 10m are Low Pass. Does it use a Bandpass filter on 160m?
If you are looking for a filter to knock down MF BC signals if the need
arises but pass 160m, I can if you like send you circuits for either High
Pass or Bandpass filters - the latter of course attenuate signals / noise
above and below 160m. Please let me know off-list.
73,
Geoff
GM4ESD
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