[time-nuts] Looking for recommendation GPS time/freq standard

[Bruce Lane]

	FWIW - The Z3801 and 3816 are nearly identical.

	Personally, I've been very pleased with my Z3801. It has been a real workhorse, serving reliably for the last 5-6 years without a hitch. I use it as an external reference for my service monitor (IFR/Aeroflex 1600A/S), and I've yet to see a 'bad' measurement as a result.

	I can't speak to phase noise from the thing, since I've never bothered to measure it, but consider where the Z-series was used: Cellphone sites. This means that any phase noise would likely become a nasty problem in terms of signal quality at the cellphone end, and that HP would likely have gone to great lengths to minimize it.

	Happy tweaking.

*********** REPLY SEPARATOR  ***********

On 21-Dec-08 at 12:10 Ed Troy wrote:

>I am looking to buy a high quality GPSDO for my lab, so that I can 
>run all of my test equipment off a single, high quality, low phase 
>noise oscillator. While time accuracy is important, phase noise is 
>the most important. I suspect my best phase noise instrument is my 
>HP8563E, with which I measure phase noise of various oscillators, but 
>I suspect the phase noise of some of the GPSDO's is better. The ones 
>I am considering are the following:
>Z3801A
>Z3816A
>Z3805A Symmetricom
>Trimble Z3801A
>Thunderbolt
>
>Any suggestions or warnings would be appreciated.
>
>
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-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner & Head Hardware Heavy,
Blue Feather Technologies -- http://www.bluefeathertech.com
kyrrin (at) bluefeathertech do/t c=o=m
"Quid Malmborg in Plano..."