v1.576: NNFM mode added (6 kHz version of NBFM)
From the CHANGE_LOG file:
v1.576 Feb 2, 2023
Added NNFM mode which has a 6 kHz passband useful for FM signals with +/- 2.5 kHz deviation.
Fixed "rough", "crackling" sound of demod. Needed a post-demod clipper.
Note: work on a proper FM de-emphasis filter has not started.
Added test button. Test result spots are NOT uploaded to wsprnet.org
Added help panel.
Restore mode and passband on extension exit from: FAX, FFT, HFDL, IQ, SSTV and WSPR
By request, right-click menu shows both of these entries all the time:
"open DX label edit panel" and "edit last selected DX label"
Previously they appeared in a single menu slot under different conditions
which wasn't optimal for all use cases (Thanks W4ILM).
FAX frequency menu updates.