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In Addition to the TNF Notch filter, How about a TPF or Tracking Passband Filter too? SmartSDR
My thought here is to make a fast pass band filter without excessive mouse dragging. Please chime in if my description leaves you asking more questions .....
I play a lot in the digital bands where the frequency is set but, the audio changes the real frequency .... as in PSK, FT8, and JT etc. So the Bandwidth starts off wide, 1.5kc to 3kc wide.
Right now if I want to close up the passband on any signal, CW, RTTY, SSB, or Digital I have to hit one of the buttons or use the mouse to drag the passband closed.
CW, RTTY, SSB this is OK, but on the digital forms like FT8 and JT the freq is set and the audio bandwdith varies to set the "Real Freq" In DIGU mode normally you would start open at 3kc or 1.5kc and close it up as needed. Seldom is the desired signal in the perfect bandwidth so you can use the buttons so you need to drag the bandwidth with the mouse and set both sides.
What I was thinking is the ability to punch up a pass filter like you do with the TNF but instead of a notch, it changes the pass band and then allows the mouse to change the width with a up/down motion like the notch filter. So I would just right click on the desired signal and the passband would close onto that frequency and down to a set bandwidth, say 100hz and then with an up or down motion change the bandwidth wide or narrow (just like the notch filter)
I was thinking if you right click on the diplay the Create Slice, Create TNF and add "Create TPF" (Tracking Pass Filter) and when finished, just like the notch filter the same delete box.
Sorry if I was long winded, but I wasnt sure if I could explain it right.
Respectfully, Brian WD9HSY
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