jks
About
- Username
- jks
- Joined
- Visits
- 32,333
- Last Active
- Roles
- Member, Administrator, Moderator
- Points
- 331
Reactions
-
Google maps in TDoA, admin page degraded/broken currently [beta test fix in v1.238]
-
Upgrade between 1.235 and 1.236 appears to fail?
-
Upgrade between 1.235 and 1.236 appears to fail?
Okay, I see the bug. It was actually introduced in v1.235 but doesn't get triggered until a restart (like when updating to v1.236)
I'll fix it in today's update. But the issue now is that you'll either have to temporarily turn off WSPR auto-run or go through the manual update procedure one more time to get past this problem. -
kiwirecorder.py crashes
-
v1.223: CIC filter compensation implemented, possible DRM benefits
I should have done this long ago, but I finally figured out a simple way to implement CIC filter compensation by empirical measurement. The before and after pictures below show the result. No more 10 to 15 dB roll-off at the ends of a wide passband. This will improve wide-band AM frequency response and more importantly wide-band IQ mode uses. DRM in particular might have an easier time without the roll-off (see DRM PSD plots below).
IQ mode, 12 kHz passband, 10 dB/div:
(display is from the new audio FFT)
With CIC filter compensation. Note flat passband:
DRM PSD before and after compensation: