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Re: GPS disciplined oscillator.


 

On 01/09/2023 13:46, Hans Summers wrote:
There should not be any 0.5 Hz frequency modulation.
Hans,

I posted this screenshot back in March, no-one has responded with their own close-in spectrum.
The picture shows the effect of removing the PPS.
I did try at least two ways of powering the Progrock and attaching/feeding the PPS.
I accept it may still be some silly thing I did or the way I tested.

73 Alan G4ZFQ

On Fri, Sep 1, 2023 at 4:36?PM Alan G4ZFQ <alan4alan@... <mailto:alan4alan@...>> wrote:

> I'm wondering if I can use the Progrock2 with the QLG2 to form a GPS
> disciplined oscillator that I can use with my Adalm Pluto requiring
> 40MHz local oscillator?
Roger,
My tests indicated that the PPS modulates the output.
Just a little +/- 0.5Hz, but I'd be wary to use it for a reference.
I have just left it, no further checks, there have been a few other
reports that have not mentioned that, maybe not noticed or not present?
Or, just bad connections?

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