An unfortunate choice of terms on my part has caused some confusion.
While my particular filter's passband is asymmetrical, something mentioned in
passing, the asymmetry I was really referring to is a difference between
something on one end of the filter from the other. It could be either a
crystal or a transformer (if used).
Wes N7WS
-- On Thu, 12/2/10, Joe Subich, W4TV <li...@subich.com> wrote:
> From: Joe Subich, W4TV <li...@subich.com>
>
> > So considering the potential effects of asymmetry in
> the build of
> > the filter(s) it doesn't surprise that reversing
> the filter might
> > make a difference, *if* filter IMD is the dominate
> factor.
>
> Reversing the filter in the mounting does not effect
> bandpass symmetry.
> However, if the filter skirts are asymmetrical, measured
> IMD will most
> certainly be different in CW and CW-R - e.g., with the
> interfering
> tones above vs. below the filter passband.
>
> 73,
>
> ... Joe, W4TV
>
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
