[time-nuts] connor winfield GPSDO module phase noise

[Said Jackson]

Jim,

Check the archives, I am pretty sure I reported on one of them, I think it was on the FTS-250.. Or FTS-125.

My recollection: Not that bad for the price, but phase noise and spurs on my sample unit were significantly worse than what they show in their plots no matter what I tried, and quite large phase/frequency jumps when disconnecting/re-aquiring GPS.

Drawbacks of NCOs versus GPSDOs I guess.

Bye,
Said

Sent From iPhone

On Feb 22, 2014, at 5:33, Jim Lux <jimlux at earthlink.net> wrote:

> I ran across these units
> http://www.conwin.com/time-frequency_references-gps_disciplined-gps_references.html
> 
> and I found some references from a few years ago in the time-nuts archives, but I can't find any data on phase noise, etc. for the disciplined output.
> 
> The data sheet/user manual/etc just say "NCO", but there's no specs on the performance.
> 
> Has anyone measured one of these?
> 
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