They did respond back and I am limited to 1. Wanted 2 but such is life. :-) Will order most likely Monday. Regards Paul WB8TSL
On Fri, Dec 7, 2012 at 11:45 AM, paul swed <paulsw...@gmail.com> wrote: > Thanks I will try this out. Pretty darn interesting indeed and at $35. > Great. Thats my kind O price. > Regards > Paul > WB8TSL > > > On Fri, Dec 7, 2012 at 8:39 AM, W2GPS <w2...@cnssys.com> wrote: > >> Paul, >> >> Regarding SSR-Pricing, Synergy said they will make the new SSR-6Tr timing >> board >> available at $35 FOB San Diego (about half the $69.85 commercial price) >> for >> educational pursuits which include Ham radio, educational institutions, >> experimenters, etc. (limit one part per customer). For comparison, the >> u-Blox >> LEA-6T module alone sells for more than $100 each in low quantities. >> >> The best way to ask Synergy about this is by using the form at >> >> http://www.synergy-gps.com/index.php?option=com_artforms&formid=1&Itemid=198 >> . >> >> Rick >> W2GPS >> >> -----Original Message----- >> From: paul swed [mailto:paulsw...@gmail.com] >> Sent: Thursday, December 06, 2012 12:02 PM >> To: Tom Van Baak; Discussion of precise time and frequency measurement >> Subject: Re: [time-nuts] PTTI 2012, part 3/3 >> >> Great comments and a good read. OK so what does the drop in replacement >> cost??? >> Thanks lots to read here. >> Later >> Paul >> WB8TSL >> >> On Thu, Dec 6, 2012 at 10:24 AM, Tom Van Baak <t...@leapsecond.com> wrote: >> >> > > Still, there are always a number of talks of more general interest to >> us >> > time nuts. >> > > In the next few postings I'll give more details on a couple of topics: >> > >> > And here's the third part of my PTTI report... >> > >> > - Vendor presentations/Symmetricom/Miles >> > >> > Besides 3 days of presentations, PTTI also hosts a vendor/exhibit area. >> > This includes the usual T&F suspects like FEI, Symmetricom, TRAK, >> > Spectracom, SpectraDynamics, TimeTech, etc. Most of this gear is outside >> > the budget of a regular time-nut but it's always nice to see and touch >> > what's on display, knowing in ten years it will show up on eBay. >> > >> > Yes, that was John Miles in the Symmetricom booth showing off his, I >> mean, >> > their new TimePod and wearing a Symmetricom shirt. We've had a number of >> > time nut "graduates" over the years: Rick Hambly went on to start CNS >> > Systems, Said Jackson started Jackson Labs, John Miles became Miles LLC >> and >> > both have ties with Symmetricom. You'll see press releases like this >> one: >> > < >> > >> >> http://www.gpsworld.com/symmetricom-expands-test-set-portfolio-with-high-perform >> ance-test-probe<http://www.gpsworld.com/symmetricom-expands-test-set-portfolio-with-high-performance-test-probe> >> > > >> > >> > If you have more questions, I'm sure John will be happy to answer then >> on- >> > or off- the list. >> > >> > - M12/uBlox GPS board >> > >> > It was very nice to see Tom Clark ("grandfather" of time-nuts) at PTTI; >> it >> > was from his work at NASA with VLBI, masers, and Motorola Oncore GPS >> > receivers that a number of us caught the precise time bug in the early >> 90's. >> > >> > Many of you know him as the author of the often recommended paper >> > "Critical Evaluation of the Motorola M12+ GPS Timing Receiver vs. the >> > Master Clock at the United States Naval Observatory, Washington DC" >> which >> > is available here: >> > <http://www.gpstime.com/files/PTTI/PTTI_2002_CNS_Testbed.pdf> >> > <http://www.gpstime.com/files/PTTI/PTTI_2002_CNS_Testbed_VG.ppt> >> > >> > Anyway, this year Tom Clark presented performance results of a new GPS >> > board. It is h/w and s/w compatible with the Motorola M12 receiver used >> in >> > many existing T&F products, but it's based on a uBlox-6T chip instead of >> > the Motorola or iLotus M12 chip. The trick is that Rick Hambly added a >> PIC >> > on the board to make it talk exactly like an M12. The reason for this >> is to >> > allow drop-in replacement of the original Motorola M12 or still-current >> > iLotus M12+ with this new one. It's called the Synergy SSR-6T. >> > >> > That means that any instrument (e.g., GPSDO) that uses an M12 can be >> > upgraded to the uBlox-6T. Tom's presentation contains charts showing the >> > performance improvement: >> > < >> > >> >> http://www.cnssys.com/files/PTTI/Low_cost_GPS-based_time_and_frequency_products. >> pdf<http://www.cnssys.com/files/PTTI/Low_cost_GPS-based_time_and_frequency_products.pdf> >> > > >> > <http://www.cnssys.com/publications.php> >> > >> > I have one to play with and hope to duplicate his results. I didn't get >> > pricing/availability info but it is supposed to be "really cheap". (Tom >> > Clark -- can you provide this info when you get it?) >> > >> > - Quartz in space >> > >> > With all the focus on fiber and optical and atomic clocks, it's >> refreshing >> > to hear now and then about good old quartz. This was a fascinating talk >> > about real-world (or real out-of-this-world) performance of quartz >> > oscillators in space. What they did was mine recorded telemetry from >> many >> > space missions looking to directly/indirectly measure the frequency of >> the >> > quartz oscillator over years in space. >> > >> > Just like we use LH to monitor the EFC of a GPSDO, they monitor the EFC >> of >> > the quartz LO in the GPS sats. In addition to normal drift there are >> > effects of radiation dose and solar flares. I'll post the URL of the >> paper >> > when it's out. Meanwhile I saw a bunch of fine papers/presentations at >> the >> > FEI site: >> > http://www.freqelec.com/tech_lit.html >> > >> > - ION/PTTI 2013 in Bellevue, WA (!) >> > >> > After 44 years, PTTI is changing "management". Instead of being >> organized >> > by the US government (USNO, NASA, JPL, and DoD) it will now be run by >> ION >> > (Institute of Navigation). This keeps the government out of the >> hospitality >> > and conference business. >> > >> > The next ION/PTTI will be held in Bellevue, WA. If you haven't >> considered >> > attending an ION or PTTI conference before, this might be a good one to >> > try. Also, since that's my hometown, I plan to have an "open house" >> during >> > the conference. That means I have a year to clean up the lab so more >> than >> > one person can walk in it... >> > >> > A number of people continued to comment on the relativity experiment I >> did >> > a few years ago. I have now posted the original (190 page) power-point >> > presentation I gave at PTTI that year: >> > http://www.leapsecond.com/ptti2006/ >> > >> > - The state of Time-Nuts >> > >> > Lastly, I wanted to make a note about time-nuts. I was pleasantly >> > surprised how many professionals already know about the time-nuts list >> or >> > lurk here. This group has really done well. Perhaps propelled by >> advances >> > in the telecom/optical world or neutrino experiments, there's a whole >> new >> > crop of scientists in the precise time field. Formal technical journal >> > articles by PhD's tend not to deal with the mundane details of precise >> time >> > measurement and lab equipment so people turn to google, and find us >> here. >> > >> > As the list grows we face some issues about posting bandwidth, focus, >> and >> > repetition. The list is mostly unmoderated, so it's completely up to >> you to >> > keep the list relevant and interesting. Please resist too off-topic >> posts >> > or low-content postings. For now at least, the archived list is rich >> enough >> > that it acts like a wiki or faq. >> > >> > As usual, if you have suggestions on how to make the list better please >> > send them to me (t...@leapsecond.com) and John (j...@febo.com). >> > >> > Thanks, >> > /tvb >> > >> > >> > >> > _______________________________________________ >> > time-nuts mailing list -- time-nuts@febo.com >> > To unsubscribe, go to >> > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> > and follow the instructions there. >> > >> >> >> >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.