RTL_SDR dongle not being working with gnuradio

Geof Nieboer gnieboer at corpcomm.net
Wed Oct 31 01:05:17 UTC 2018

Yes, can confirm Steve's comment, with -t that's the expected result.

I also get the "PLL not locked!" error message on my RTL-SDR (different
PID), but flowgraphs still work fine in GNURadio / Win10.

On Mon, Oct 29, 2018 at 5:29 PM Steve Markgraf <steve at steve-m.de> wrote:

> Hi,
> On 28.10.2018 16:26, MB wrote:
> > Is it possible RTL_TEST is looking for a E4000 because of it's dongle's
> > screwy PID, even though it sees a R820T.  If not, why is it not working?
> > thanks.
> » rtl_test -h
> rtl_test, a benchmark tool for RTL2832 based DVB-T receivers
> Usage:
>         [-s samplerate (default: 2048000 Hz)]
>         [-d device_index (default: 0)]
>         [-t enable Elonics E4000 tuner benchmark]
> As you can see, -t only works with E4000 tuners, and is meant to
> determine the size of the L-Band gap this tuner has. The R820T2
> you have doesn't have an L-Band gap, thus there is nothing to benchmark.
> Regards,
> Steve
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