[time-nuts] Ashtech Z12T

[Magnus Danielson]

Hi Bob,

On 12/3/18 2:42 PM, Bob kb8tq wrote:
> Hi
> 
> Ok, if frequency is the only concern, then a fairly conventional GPSDO would do the job.
> One of many out there is the FS 740. 
> 
> https://www.thinksrs.com/downloads/pdfs/manuals/FS740m.pdfAnother 
> 
> There are a lot of others. The approach used is normally a very long comparison ( as in 
> weeks). The advantage is that they are pretty much “plug and play” with little intervention
> required from the user. 
> 
> The Novatel boards 
> 
> https://www.novatel.com/assets/Documents/Papers/OEM7-Receivers-BR-D21517-v1.pdf <https://www.novatel.com/assets/Documents/Papers/OEM7-Receivers-BR-D21517-v1.pdf>
> 
> are a more “hands on” way to do the task. There would be some software development 
> required on your part to get them going. They would allow more careful control over the 
> exact nature of the comparison. 
> 
> Indeed there are a number of similar devices on the surplus market. The two items above 
> are only a random selection of what’s out there. 
> 
> In the US, NIST used to supply a service (for a charge of course) that set up a comparison 
> system at your location. I do not know if there are similar services available outside the US. 

I've been shown one in a certain German vendors location as they just
recently got it. They where proud and happy. I really enjoyed seeing it
there, that they took the step.

Cheers,
Magnus