Li Ang wrote:
This unit is done by BG7TBL. In his store on taobao.com, there is a adev chart. Please refrer to this link
That ADEV chart (see below) raises more questions than it answers. At least the time constant is not too short (a very common problem with DIY GPSDOs). But when the GPS takes over above the crossover (tau ~ 5000 seconds), the ADEV is ~2e-11. GPS should be significantly better than this at 5000 seconds. It appears that something is wrong with the design.
Best regards, Charles
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