Using the R820T above 1.77 GHz?

Per Baekgaard baekgaard at
Mon Apr 15 14:31:32 UTC 2013

Thanks for your reply, Stefan.

You wrote:
> mine goes up till almost 1.9GHz with no harm.

Mine does go up there around too, if I'm using your repository.

I've also had a look at your code, and I can see you have removed the
same lines of code too. However, when I build it here and install it on
my machine, there is a big difference in the performance -- for
instance, tuning to some of the lower bands (just try 24 MHz) shows a
lot of spikes/spurs that are not present when using the "official"
repository, even though the settings are the same in the testing
application (in this case gqrx).

Not sure why, though -- did you change the gain parameters somehow? If
not, then there might possible be some bugs introduced that are causing
the spurs? They seem to be somewhat stable in the spectrum, despite the
tuned-to frequency.

-- Per.

More information about the osmocom-sdr mailing list