External GPS-disciplined clock

[andrew....@googlemail.com]

With all this discussion of external clocks for SDRs, what about this one?

 

GPS Disciplined Oscillator GPS Disciplined Clock 10MHz Output Frequency High Precision OCXO - AliExpress 7

 

It claims to be GPS-disclipined, by which it means that it uses GPS to keep the clock accurate.

 

Andy

[andrew....@googlemail.com]

There is a manual with specs and photos etc – I have attached it here. How does this compare to the £16 clock previously discussed or other GPS-disciplined clocks available elsewhere? From discussion so far, I would have though that this is a good option for pulsars, masers or interferometry. I would like to buy a clock to help with maser observations and need to decide what to buy. Please advise!

Andy

[andrew....@googlemail.com]

I’ve just seen Ayushman’s post where he mentions this device – is that similar to the one I found and would it therefore be best choice as price is spectacular at £43 for GPS-disciplined clock.

 

https://uk.banggood.com/GPSDO-GPS-Tamed-Thermostatic-Crystal-Oscillator-GPS-Tamed-Clock-10MHz-Signal-Source-Global-Positioning-System-Disciplined-Oscillator-p-2009155.html?akmClientCountry=GB&a=1784564176.788&cur_warehouse=CN

[Whitham Reeve]

Andy - I compared several inexpensive GPS disciplined Reference Oscillators in 2023: 

https://www.reeve.com/Documents/Articles%20Papers/Reeve_GDOComp.pdf

Whit

[Don Latham]

Can't tell about this one. Current chat has the Leo Bodnar as the best. 

 

------------
Don Latham
PO Box 404,
Frenchtown, MT, 59846
406-626-4304

 

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From: andrew.thornett via Society of Amateur Radio Astronomers <sara...@googlegroups.com>
To: sara-list <sara...@googlegroups.com>
Date: Monday, 20 July 2026 9:52 AM MDT
Subject: [SARA] RE: External GPS-disciplined clock

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[Don Latham]

This is the adjust and freeze that I mentioned earlier. It is continuously adjusting if not "frozen".  The adjustments, however, are not smooth, but periodic. So there might e some jitter associated. As long as the 1 hz signal is not needed, It might be OK, but I am not sure.

 

------------
Don Latham
PO Box 404,
Frenchtown, MT, 59846
406-626-4304

 

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From: andrew.thornett via Society of Amateur Radio Astronomers <sara...@googlegroups.com>
To: sara-list <sara...@googlegroups.com>

Date: Monday, 20 July 2026 10:18 AM MDT

Subject: [SARA] RE: External GPS-disciplined clock

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[Don Latham]

Nice, Whit. I mighta known :-)

The low-cost under discussion came out after you did the work. Dunno where it might be.

Don

 

------------
Don Latham
PO Box 404,
Frenchtown, MT, 59846
406-626-4304

 

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From: Whitham Reeve <whit...@gmail.com>
To: Society of Amateur Radio Astronomers <sara...@googlegroups.com>
Date: Monday, 20 July 2026 11:34 AM MDT
Subject: [SARA] Re: External GPS-disciplined clock

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