RTL_FM on the fly updates

tom at tswartz.net tom at tswartz.net
Mon Jan 7 23:16:45 UTC 2019

Any reason that you couldn't use rtl_tcp instead?

It's pretty common to run rtl_tcp on a remote RPi server, 
then use a different, local computer to host GQRX.
Squelch, frequency changing, and other features should be
available via that protocol presently.

Tom Swartz

On Mon, Jan 07, 2019 at 05:01:37PM -0500, Mark Russell wrote:
> Good evening -
> I am trying to make modifications to rtl_fm so that I can change
> frequencies, gains, modulation types, and squelch values on the fly (and
> thus avoiding a restart). 
> Its unclear to me what functions need to be called in order to apply
> changes to the sdr device so that I can do the above. The rtl_fm code isnt
> documented so I dont have much to go off of...
> GQRX doesnt run reliably on any RPi3's I've tried so I hoping to use a
> modified rtl_fm in its place. Any help would be appreciated.
> Thanks :)
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