Xref: utzoo rec.ham-radio:16896 sci.electronics:9619 Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uwm.edu!uakari.primate.wisc.edu!cupcake!jwp From: jwp@cupcake.sal.wisc.edu (Jeffrey W Percival) Newsgroups: rec.ham-radio,sci.electronics Subject: Re: Getting the time over the phone from NBS Message-ID: <810@cupcake.sal.wisc.edu> Date: 19 Jan 90 18:19:39 GMT References: <1043@khijol.UUCP> <899@tridom.uucp> <26101@cup.portal.com> <808@cupcake.sal.wisc.edu> Reply-To: jwp@cupcake.UUCP (Jeffrey W Percival) Organization: Space Astronomy Lab, Madison, WI Lines: 25 (Previous posting cancelled... shouldn't have gone to alt.sources...) In article <26101@cup.portal.com> thad@cup.portal.com (Thad P Floryan) writes: >I've put together a prototype system that does just what Karl describes. My >time reference is a HeathKit GC-1000 "Most Accurate Clock" which locks onto >NIST's (formerly NBS') WWV at 5, 10 or 15 MHz to provide +/- 10 mSec Universal >Time Coordinated on its RS-232c port. I've been testing the setup since: > >If you'd like to install and provide such a service on your system, you need >an accurate time reference (the Heath clock is my recommendation: kit price >from their Winter 1990 Catalog No. 219 is $249.95 for the clock and $49.95 for >the RS-232 interface (see page 28)), and: I just finished building this kit, and the clock is very neat. But imagine my surprise when I plug it in and find the digits in the display are all messed up! After a bit of debugging, imagine my astonishment in finding an error in the printed circuit board layout!!! Two of the digit anodes were shorted together, not by any impurity or solder bridge, but by a neat, straight, designed-in board trace. A flash of the exacto knife, a severed trace, and now the clock works fine. Anybody from Heath on the net? -- Jeffrey W Percival (jwp@larry.sal.wisc.edu) (608)262-8686