Time-Nuts -- Precise Time and Frequency for Amateurs
Description
Time-Nuts™ is a mailing catalog for amateurs who are curious in precise Time & Frequency. Topics contain stability of quartz oscillators, measurements of rubidium and cesium nuclear clocks, using WWVB, Loran-C, and GPS for long-term comparisons.
Most of the members are hams or electronics hobbyists. Topics additionally include acquisition, repair, and procedure of surplus digital instruments connected to exact time; nanoseconds; picoseconds; results of homebrew hardware and application T&F projects, etc.
Please associate if you have questions or ability to add to the group.
- To subscribe to the mailing catalog dispatch a blank email to: [email protected]
– Within ~10 seconds you volition get an email confirmation. Reply to it. - To unsubscribe dispatch a blank email to: [email protected]
- To post to the 1800-member mailing list, dispatch email to: [email protected]
– Note that you need to have subscribed before your archetypal post. - For admin issues, suggestions / questions / problems, dispatch email to: [email protected]
– Note the personal admin time-nuts-owner@ assistance email is distinct from the community time-nuts@ mailing catalog email.
– We'll assistance your subscription, ISP, email formatting, attachments, digest mode, etc. problems. - The catalog archive (2004-present) is at: https://febo.com/pipermail/time-nuts_lists.febo.com
Getting Started alongside Amateur Time & Frequency
If you have an involvement in exact period & frequence or are getting the "time bug" current are some suggestions:
- Join the time-nuts mailing list.
- Ask questions; do experiments; portion your results.
- Get a awareness for the instruments and test equipment used in this field. Search eBay for words like: cesium, rubidium, quartz oscillator, frequence counter, frequence standard, phase comparator, 1pps, etc.
- Look for surplus electronics by companies like: Austron, Bliley, BNC (Berkeley Nucleonics Corp), Datum, Efratom, FEI (Frequency Electronics Inc), FTS (Frequency & Time Systems), GenRad (General Radio), HP (Hewlett-Packard)/Agilent, Kinemetrics, Odetics, Oscillatek, Oscilloquartz, Ovenaire, Quartzlock, Spectracom, SRS (Stanford Research Systems), Sulzer, Symmetricom, Temex, Tracor, Trak, Truetime, Vectron, Wenzel, Zyfer
- Visit amateur Time & Frequency web sites:
- LeapSecond.com (Tom Van Baak)
- www.niceties.com/time.html (Doug Hogarth)
- prc68.com/I/timefreq.shtml (Brooke Clarke)
- www.febo.com/time-freq (John Ackermann)
- www.rt66.com/~shera (Brooks Shera)
- www.qsl.net/zl1bpu/PRECISION (Murry Greenman)
- www.thegleam.com/ke5fx (John Miles)
- www.ko4bb.com/Timing (Didier Juges)
- phk.freebsd.dk/hacks (Poul-Henning Kamp)
- www.efos3.com (Ole Petter Ronningen) "Time-nuttery 101"
- Find op/svc manuals: KO4BB's Manuals Repository
- See Didier's wiki: KO4BB Wiki Home Page
- Study John Vig's Introduction to Quartz Frequency Standards
- substitute location to John Vig Tutorial if ieee.org is broken: Vig-tutorial8.5.6.3-Oct2014.ppt - Read several T&F books: www.LeapSecond.com/pages/books
- Have a quick appearance at the NIST Time and Frequency from A to Z - Glossary
- Read item Bill Riley has written Hamilton Technical Services
- Read papers, presentations, books by Enrico Rubiola Enrico Rubiola Publications
- Browse NIST Time and Frequency Publication Database
- See the WIRED mag part on Time Hackers and (photos)
- Enjoy historic data at Frequency Control History
- Find app notes at commercial T&F sites: CNS GPStime Symmetricom TSC CTS
- See government lab sites: NIST USNO NPL PTB JPL NRC IEN ITU BIPM IERS EFTF PTTI FCS
Searching the archives
The Time-Nuts mailing catalog archive is located at: http://lists.febo.com/pipermail/time-nuts_lists.febo.com.Most users merely use google to hunt the archives; do this by adding site:febo.com to your hunt word(s).
History of Time-Nuts
In the pre-web 1990s Tom Clark set up a gps-timing mailing catalog at NASA for those interested in his pioneering activity alongside the Motorola Oncore-series GPS receiver. That catalog was an inspirational example of one man openly sharing a wealth of cognition and data alongside a collection of curious GPS timing newbies. The catalog was particular to his home-brew TAC hardware (now TAC-2) and SHOWTIME application (now TAC32). The catalog moved to TACGPS and is motionless about but quiescent (now hosted by TAPR).
However, there were another exact period & frequence topics not covered by tacgps. Over the years multiple of us — tvb, DougH, StanP, CorbyD, JohnA, BrookeC — were exchanging personal emails that I idea deserved wider audience, participation, and archiving. So in 2001 time-nuts began. It was once cesium-nuts at Yahoo, then time-nuts current at LeapSecond.com, then John Ackermann graciously offered to oversee and presenter it on his location so that's anywhere it is today. [1] [2] [3] [4]
Return to LeapSecond.com residence page,
or Museum of Time & Frequency,
or Museum of HP Clocks.
Comments/questions to tvb.
