[time-nuts] Purchasing a Trimble GPS timing solution

[bg at lysator.liu.se]

Hi David,

(I did not check the exact offer of your CN supplier)

How do you intend to mount the antenna? How long a cable must you run from
the Tbolt to the antenna?

Will a small magnetic mount antenna puck with a 3-5 meter thin koax
attached mount ok and give a clear view of the sky?  If yes, then go for
that solution.

If you need (and are allowed) to make a longer cable run up to a
roof-mounted antenna to get good sky visibility then go for a better
antenna. VIC-100/Motorola/HP/Agilent/Symmetricom GPS timing antenna comes
to mind.

Good luck!

--

   Björn

> I note the Chinese supplier offers two kits, one more expensive than the
> other. The difference is the GPS aerial. Anybody any experience of the
> difference between them?
>
> David
>
>>>> Mark Sims <holrum at hotmail.com> 12/07/2009 23:21 >>>
>
> I have purchased several items from that seller without problem.  He
> ships via Hong Kong post which gets handled by the US postal service...
> never had any customs duties, etc.  All items arrived within a week or
> two.  A couple of times I have emailed him asking questions about an
> item and have never received a reply.  Ebay seller Fluke.l is another
> supplier with a good reputation.
>
> Now on the subject of Thunderbolt antennas...  I recently got an
> Ashtech Z12 geodetcic grade GPS receiver and antenna.  I now know where
> my a$$ is within a couple of centimeters.  I have spent the last couple
> of days asking a Thunderbolt where it is using several different
> antennas (and the Self Survey command).  Should have the numbers
> crunched in a day or two...  so far it looks like antenna issues may be
> fairly irrelevant.
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