Error setting frequency: -1

smholvoet commented 1 year ago

Hi 👋

Trying to run this with my RTL-SDR V3, but end with the following error when running .\dump1090.exe

Found 1 device(s):
0: ??         ??                   SN: ?? (currently selected)
WARNING: Failed to enable manual gain.
WARNING: Failed to enable automatic gain.
Error setting frequency: -1.

It looks like it found my RTL-SDR but it fails to retrieve any info which seems odd. I'm pretty sure my device is working properly:

Running on W11 22H2 (22621.1702).

gvanem commented 1 year ago

I do not know what could be wrong. But in a cmd-shell (DOS-box) do:

set RTLTRACE_LEVEL=1 or 2
dump1090.exe --debug g

And post the output.

smholvoet commented 1 year ago

Ok something weird is going on. Somehow everything is suddenly working:

misc.c(377): QueryPerformanceFrequency(): 10.000 MHz
aircraft.c(745): Parsed 459998 records from: "C:/Users/Sander/repos/github/Dump1090/aircraftDatabase.csv"
Found 1 device(s):
0: Realtek    RTL2838UHIDIR        SN: 00000001 (currently selected)
Tuner gain set to automatic.
Tuned to 1090.000 MHz.
Gain reported by device: AUTO.
dump1090.c(4370): modeS_init_RTLSDR(): rc: 1.
*8d4ca813ea447865671c086d6605;
CRC: 6D6605 (ok)
RSSI: -1.2 dBFS
DF 17: ADS-B message.
  Capability     : 5 (Level 2+3+4 (DF0,4,5,11,20,21,24,code7 - is airborne))
  ICAO Address   : 4CA813 (reg-num: EI-EKT, manuf: The Boeing Company, call-sign: RYANAIR)
  Extended Squitter Type: 29
  Extended Squitter Sub : 2
  Extended Squitter Name: Unknown: 29/2
    Unrecognized ME type: 29, subtype: 2
...
✈️
...
✈️
...

I then tried opening SDRangel and load the ADS-B demodulator, which was unable to find the device (even though it just worked in dump1090 seconds earlier). When I then tried the above command again:

misc.c(377): QueryPerformanceFrequency(): 10.000 MHz
aircraft.c(745): Parsed 459998 records from: "C:/Users/Sander/repos/github/Dump1090/aircraftDatabase.csv"
Found 1 device(s):
0: ??         ??                   SN: ?? (currently selected)
WARNING: Failed to enable manual gain.
WARNING: Failed to enable automatic gain.
Error setting frequency: -1.
dump1090.c(4370): modeS_init_RTLSDR(): rc: 0.

Seems like it loses connection to the RTL-SDR?

gvanem commented 1 year ago

Seems like it loses connection to the RTL-SDR?

Try unplugging and plugging it back in.

But I saw no librtlsdr.c trace in the output above. So do set RTLTRACE_LEVEL=1 or set RTLTRACE_LEVEL=2,winusb first. I'm interested in what happens in the function rtlsdr_set_tuner_gain_mode() and r820t_set_gain_mode().

And the SDR# picture above showed you tuned to 102.1 MHz. What happens if you tune to 1090 MHz with SDR-Sharp? Perhaps your tuner has problems with such high frequencies?

gvanem commented 1 year ago

Seems this issue is solved. Hence closing. Feel free to re-open if it's not solved.

ChrisDev8 commented 1 year ago

Important to note, SDRSharp will not let other programs access the RTL-SDR Device.

gvanem commented 1 year ago

SDRSharp will not let other programs access the RTL-SDR Device.

You mean: "let other programs access it at the same time SDRSharp is using it"? That's since the USB-device is locked by WinUSB AFAICS. How could sharing a USB-device like that work under the hood?

gvanem / Dump1090

Error setting frequency: -1 #6