Re: Help on

[Fabian Schwartau]

Hi,
did you set the correct frequency? If it is outside the allowed range, 
it is expected that the PLL cannot lock.

Best,
Fabian

Am 27.03.22 um 18:46 schrieb Lorenzo Mainardi:
> Hello everyone, I am trying to make a cheap USB dongle working with
> gnuradio and gnuradio-companion.
> I just tried to use a source block and link to a waterfall sink.
> This is the error that I got:
>
> <<< Welcome to GNU Radio Companion 3.10.1.1 >>>
>
> Block paths:
> /usr/share/gnuradio/grc/blocks
>
> Loading: "/home/lorenzo/Scaricati/fm_demod_mono.grc"
> > > > Converting from XML
> > > > Done
>
> Generating: '/home/lorenzo/Scaricati/top_block.py'
>
> Executing: /usr/bin/python3 -u /home/lorenzo/Scaricati/top_block.py
>
> gr-osmosdr 0.2.0.0 (0.2.0) gnuradio 3.10.0.0
> built-in source types: file fcd rtl rtl_tcp uhd hackrf bladerf rfspace
> airspy airspyhf soapy redpitaya freesrp
> Using device #0 Realtek RTL2838UHIDIR SN: 00000001
> Found Rafael Micro R820T tuner
> [R82XX] PLL not locked!
> [R82XX] PLL not locked!
>
> > > > Done (return code -11)
>
> What does this mean? How can solve this problem?
> The dongle is working fine with SDRSharp or rtl_fm.
>
> Thank you