Thread: Homebrew GPSDO
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Old 2nd Mar 2021, 9:51 pm   #9
jimmc101
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Join Date: Mar 2009
Location: Portsmouth, Hampshire, UK.
Posts: 651
Default Re: Homebrew GPSDO

A really cheap way to check the 10MHz would be one of the GPS modules using the u-blox NEO-7M (well under 10).
These can be programmed to give an output frequency up to 10MHz in 1Hz steps.
The catch is that there will be considerable jitter on output but averaged over a period of a few seconds or more, using a counter or by eye using an oscilloscope, sub Hz accuracy at 10MHz is easily attainable.
Programming can be done via 'u-center' software on a PC (via a USB-TTL serial converter) or using an arduino or similar.

Jim
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