There are other methods to use these steep filters. using them in
series with the existing filter in many radios will really clean up a
sloppy slope.

to prove this I am getting a RF-4900, a radio of questionable quality
which I will soup up using among other things an LF-D6 filter in
series with the existing IF filter.

I will have pics and a story when the project is done.


I will OVERCOME the skeptics !