No decodes with this program
Closed this issue · 3 comments
With this program:
$ ./rtlsdr_ft8d -a -f 20m -c VU3CER -l MK68
Found 1 device(s):
0: Realtek, RTL2838UHIDIR, SN: 00000001
Using device 0: Generic RTL2832U OEM
Detached kernel driver
Found Rafael Micro R820T tuner
Enabled direct sampling mode, input 2
Starting rtlsdr-ft8d (2022-01-21, 15:07z) -- Version 0.3.6
Callsign : VU3CER
Locator : MK68
Dial freq. : 14074000 Hz
Real freq. : 14074000 Hz
PPM factor : 0
Auto gain : enable
Wait for time sync (start in 12 sec)
Allocating 15 zero-copy buffers
No spot 2022-01-21 15:07z
No spot 2022-01-21 15:08z
No spot 2022-01-21 15:08z
No spot 2022-01-21 15:08z
I have not been able to decode any FT8 traffic with this program.
With Gqrx + WSJT-X things are fine:
The FT8 beacon is generated using https://github.com/kholia/Easy-Digital-Beacons-v1 project.
I am running Ubuntu 21.10 here.
$ ldd rtlsdr_ft8d
linux-vdso.so.1 (0x00007ffc897f8000)
libusb-1.0.so.0 => /lib/x86_64-linux-gnu/libusb-1.0.so.0 (0x00007fb29ec31000)
librtlsdr.so.0 => /lib/x86_64-linux-gnu/librtlsdr.so.0 (0x00007fb29ec20000)
$ dpkg -S /lib/x86_64-linux-gnu/librtlsdr.so.0
dpkg-query: no path found matching pattern /lib/x86_64-linux-gnu/librtlsdr.so.0 # OK, we are not using the system packaged version
I am using the RTL-SDR Blog V.3. dongle here.
What could I do to debug this problem? Thank you for your time, and help.
Updates:
$ ./rtlsdr_ft8d -t -f 20m -c VU3CER -l MK68
Score Freq Call Loc
34 14074028 K1JT FN20
Self-test SUCCESS!
The self-test works fine.
Same results here, tried with different gain settings but nothing gets decoded. Self-test ok.
A retraction, now was able to get some decodes out! Have to do more testing during next weekend.
Glad to hear it!!
I guess you are using the HF band and not the VHF. I never tested the HF.
You might have an offset, feel free to share your settings or take a capture an check the spectrum with your preferred tool.