ppm does nothing on CloudIQ

[pidloop]

Hello,

I really enjoy using gqrx 2.8 on macOS 10.12 with my RFSpace CloudIQ, it works very very well. Thanks for this great program.

Just one issue please: the ppm correction field does not seem to do anything. I can change it to any value but nothing happens. Perhaps I am missing a step? Perhaps there is some communication with the CloudIQ that is not correct? I would be happy to help troubleshoot if I can do anything.

73, Elwood, WB0OEW

[csete]

Hi Elwood,

It looks like it is not implemented by the backend: https://github.com/csete/gr-osmosdr-gqrx/blob/master/lib/rfspace/rfspace_source_c.cc#L1570 So this problem exists for all RFSpace radios supported.

I'm curios, how much error do you have?

[pidloop]

At 10 MHz WWV I measure 11.2 Hz too high. I can set this in the LNB LO but that does not scale with frequency,

On Mon, Oct 9, 2017 at 12:52 PM, Alexandru Csete notifications@github.com wrote:

Hi Elwood,

It looks like it is not implemented by the backend: https://github.com/csete/gr-osmosdr-gqrx/blob/master/lib/ rfspace/rfspace_source_c.cc#L1570 So this problem exists for all RFSpace radios supported.

I'm curios, how much error do you have?

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[csete]

If / when I make a new release I will try to have this fixed as it shouldn't be difficult to fix.

[pidloop]

Sounds great, no panic. Thank you.

On Mon, Oct 9, 2017 at 1:34 PM, Alexandru Csete notifications@github.com wrote:

If / when I make a new release I will try to have this fixed as it shouldn't be difficult to fix.

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[costonisp]

I experience the same issue with my PlutoSDR. The error is about 5ppm.

2017-10-09 21:52 GMT+02:00 Alexandru Csete notifications@github.com:

Hi Elwood,

It looks like it is not implemented by the backend: https://github.com/csete/gr-osmosdr-gqrx/blob/master/lib/ rfspace/rfspace_source_c.cc#L1570 So this problem exists for all RFSpace radios supported.

I'm curios, how much error do you have?

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[csete]

The same applies to plutosdr. In fact, the plutosdr backend is really just a prototype to get the receiver up and running and it is not even merged upstream. It will eventually require a maintainer, otherwise it will be a dead project. I simply don't have the time to maintain and package all these backends by myself.

[csete]

I have now pushed changes to the rfspace and plutosdr branch in gr-osmosdr-gqrx that implement PPM setting for these devices. It will be available in the next packaging round in a few days.

[pidloop]

Sweet! Many thanks Alex.

Elwood, WB0OEW

On Fri, Mar 16, 2018 at 4:27 PM, Alexandru Csete notifications@github.com wrote:

I have now pushed changes to the rfspace https://github.com/csete/gr-osmosdr-gqrx/tree/rfspace and plutosdr https://github.com/csete/gr-osmosdr-gqrx/tree/plutosdr branch in gr-osmosdr-gqrx https://github.com/csete/gr-osmosdr-gqrx that implement PPM setting for these devices. It will be available in the next packaging round in a few days.

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