Re: [time-nuts] A nice auction in the Seattle area

2012-10-12 Thread DaveH
Hi Don I have been going to James G. Murphy auctions for the last 20 years (the Seattle Space Needle remodel was my first) and love them. Zero shilling http://en.wikipedia.org/wiki/Shill and they will let someone back out of a closed deal if there was a misunderstanding. Once. Do you have

Re: [time-nuts] A nice auction in the Seattle area

2012-10-12 Thread Don Latham
Actually, I was thinking more of Murphy's law :-) Sorry it got taken the wrong way... DaveH Hi Don I have been going to James G. Murphy auctions for the last 20 years (the Seattle Space Needle remodel was my first) and love them. Zero shilling http://en.wikipedia.org/wiki/Shill and they

Re: [time-nuts] GPS splitter measurements

2012-10-12 Thread Azelio Boriani
I test GPS antennae for warranty purposes: customers want to know if really defective or not. On Fri, Oct 12, 2012 at 7:45 AM, b...@lysator.liu.se wrote: Paul, Azelio, Not at all the satellite splitters can be smart or passive. I use a passive so it has 1 dc path. But all of the other

[time-nuts] Factors other Than Antenna Splitters

2012-10-12 Thread johncroos
Hello All - The recent discussion on the use / not use of splitters affecting GPS timing performance may be further informed by this table. It was extracted from page 5-8 of the Thunderbolt Disciplined Clock User Guide Version 5.0 Part Number: 35326-30 November 2003 Table 5-1 GPS Error

[time-nuts] T-Bolt oven / LH question

2012-10-12 Thread Don Oconnor
Hello all, I recently purchased a ThunderBolt on eBay. I believe the T-Bolt's oscillator oven is not operating correctly. But, having never used a T-Bolt or Lady Heather software I'm not sure. Why I believe there is a problem: 1.The T-Bolt's external case is barely warm (my guess about

Re: [time-nuts] T-Bolt oven / LH question

2012-10-12 Thread George Dubovsky
You're probably OK. The T'bolt doesn't report oven temp, but rather the temp near the edge of the pwb some distance from the oscillator. Think of it as the environmental temp inside the package. If you ever look inside, look for an 8 pin Dallas Semi IC that is labeled DS1620; it's right behind the

Re: [time-nuts] Factors other Than Antenna Splitters

2012-10-12 Thread Bob Camp
Hi As others have reported, a TBolt in a good environment is closer to a 1 or 2 ns one sigma (over 100+ seconds) than to the numbers in the Trimble manual. The satellite data on the NIST site shows much better numbers than they show for Satellite Clock and Satellite orbit. Bob -Original

Re: [time-nuts] T-Bolt oven / LH question

2012-10-12 Thread Bob Camp
Hi If you leave the unit off power for a couple minutes, does the +12 current start at something higher than 150 ma? It should be well above 500 ma at turn on. If not, then the oven in the OCXO isn't doing it's thing. Bob -Original Message- From: time-nuts-boun...@febo.com

Re: [time-nuts] A nice auction in the Seattle area

2012-10-12 Thread DaveH
Hi Don Zero problem. The reason for __my__ over-reaction is that there are a lot of bad auction houses out there. This is a third generation family business -- Jims' grandson is now starting to auction. Squeaky clean and a lot of fun. Dave -Original Message- From:

[time-nuts] PRS10 dying from old age...

2012-10-12 Thread Poul-Henning Kamp
One of my PRS10s is dying from old age by the looks of it, here is some data I have collected from it over the last 800 days: http://phk.freebsd.dk/hacks/prs10_death/index.html -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD