开云体育

On Tuesday, October 8, 2019, 10:53:35 AM CDT, norbert.kohns@... <norbert.kohns@...> wrote:

Hi Rune,
if you would change the word "Span:" to "BW:" that's more comprehensive.
Please add a -6dB BW as well because SSB chrystal filters are usually characterized with their -6dB BW.
If you don't set a marker from where the search starts, and let the software find the -3dB points of the BP-filter instead, then the software can also calculate the correct center frequency of the BP-Filter. This is very helpfull while adjusting a homebrew filter, because you would get from sweep to sweep an update of the CF. If I understand the current method correctly, I will set the CF with the marker visually. Correct me if I am wrong.
For HP- and LP filters this method would work as well. If you search for lowest attenuation first and set this value as reference, next search for the -3dB point starting at reference.

What do you think about that?

Kind regards
Norbert, DG1KPN