No signals

[kevtheskin]

Hello there, I have been playing around with this with my rtlv3 dongle and patch and i get no signals. In gqrx i can see what looks like sporadic peaks at about 1.621 ghz onwards but no decode in gr-iridium. Anyone had the same issues?

Cheers Kev

[schneider42]

Can you send us a screenshot of what you see in gqrx? You are most likely to see something around 1.626 GHz

[kevtheskin]

Can you send us a screenshot of what you see in gqrx? You are most likely to see something around 1.626 GHz

Hi there, I am seeing what looks like intermittent wifi type peaks across the whole band. I can see inmarsat 54w ok and my location is Scotland. Thank you for the reply

[kevtheskin]

Latest update . I have installed the rtlsdrblog updated driver on my windows box and I can see lots of signals using sdr#. I did the update on my linux box and i could see signals for a short while using Gqrx and Gr-iridium and now nothing. Went back to my windows box and can still see lots of signals? Confused :(

[schneider42]

Which exact SDR are you using? If you don't know for sure a picture might help.

I know that R820t tuner based devices can have difficulties tuning to such high frequencies. The tend to overheat in this case and I believe the PLL for the LO loses lock in that case. Maybe sdr# somehow configures the tuner in a different way, avoiding the issue.

[kevtheskin]

Which exact SDR are you using? If you don't know for sure a picture might help.

I know that R820t tuner based devices can have difficulties tuning to such high frequencies. The tend to overheat in this case and I believe the PLL for the LO loses lock in that case. Maybe sdr# somehow configures the tuner in a different way, avoiding the issue.

Hi there, I have 2x Rtlsdr v3

[schneider42]

Could you give the --raw-capture a try and upload the result somewhere? Maybe we can see something there.

[schneider42]

@kevtheskin let me know if you are still working on this. Otherwise I will close the issue.