Fix issues with testing & running WSPR demodulator.

kpreid / shinysdr

Software-defined radio receiver application built on GNU Radio with a web-based UI and plugins. In development, usable but incomplete. Compatible with RTL-SDR.

https://shinysdr.switchb.org/

GNU General Public License v3.0

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Fix issues with testing & running WSPR demodulator. #88

Closed kpreid closed 7 years ago

kpreid commented 7 years ago

Code was rebased without updating get_absolute_frequency to get_absolute_frequency_cell.
Tests intended to stub out finding the WSPR binary but didn't.

kpreid commented 7 years ago

Thanks in particular for confirming decoding! I've had zero since committing those changes and wanted to be sure it wasn't because I broke it.

bitglue commented 7 years ago

If you're seeing signals but not getting decodes, I'd guess either your computer clock is off (or you have high latency making it effectively off) or the receiver frequency drift is too high. The decoder tries to compensate for drift but I think it can handle only 1, maybe 2 Hz over the 2 minutes in either direction.

kpreid commented 7 years ago

I live in a high-RFI environment; I don't expect to pick out the signals visually.

Well, at least with ShinySDR's low-res FFT. Back when I was running dedicated WSPR software I could see a few (which were properly aligned with the minute boundaries and non-drifting). Just one more reason to improve that…