On Sat, Jan 13, 2007 at 09:01:50AM -0500, Tim Shoppa wrote:
David I. Emery [EMAIL PROTECTED] wrote:
Which leaves the other question, from reading the 58540A
literature, manual and other material available I concluded four years
ago that it adjusted the 1 PPS timing to track GPS once
David I. Emery [EMAIL PROTECTED] wrote:
I see your point, an architecture with the VCXO derived 1 PPS
output NOT coherent with the 10 MHz would be somewhat unnatural and hard
to use in a system and presumably virtually ALL GPSDOs do phase lock the
10 MHz to the GPS time base rather than
David I. Emery [EMAIL PROTECTED] wrote:
Which leaves the other question, from reading the 58540A
literature, manual and other material available I concluded four years
ago that it adjusted the 1 PPS timing to track GPS once locked to GPS by
adjusting the EFC for the OXCO (I quite
to: John,KE5FX
Hi John
I read your question on the THUNDERBOLT look-alike sold by 'accelium'. Since
I have bought this unit (for 500$!!!), I can answer some of it:
The hp58533a has a similar form factor as the Thunderbolt but it's an
entirely different design. I made the following notes when
Regarding the Thunderbolt, I got some information from the Trimble sales
manager for timing products:
The Thunderbolt was designed and built in-house (of course from parts
bought from outside sources). So, the software and IP are Trimble, not
OEM'd. Any resemblance with the Symmetricom 58540A
On Fri, Jan 12, 2007 at 03:29:15PM -0600, Didier Juges wrote:
Regarding the Thunderbolt, I got some information from the Trimble sales
manager for timing products:
The Thunderbolt was designed and built in-house (of course from parts
bought from outside sources). So, the software and IP
Nice building
(I couldn't resist... When i see coordinates, I HAVE
TO go to maps.google.com to see whetre it is!!! Is it
officially recognized as being an addiction??) ;-=)
Have a good day!
73 de Normand VE2UM
Saint-Hubert (near Montreal), Qc. Canada
David I. Emery wrote:
As for performance, I am curious myself. Certainly the
Thunderbolt is better documented in respect to performance, but whether
in fact it actually IS a lot better when GPS locked is something I'd
like to know. Its firmware does seem to supply a lot more data
