[time-nuts] TV Signals as a frequency reference

2018-03-30 Thread Francis Grosz
station I worked for had one but it was used for controlling the transmitter frequency. Long story). Now that analog TV has gone away, so have these signals. Francis Grosz ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, g

[time-nuts] Looking for Austron manual

2017-08-24 Thread Francis Grosz
, or at least working properly. If anyone has a manual for this version or a pointer to it I'd really appreciate it. I have the manual for the "D" version but apparently this is considerably different. Thanks in advance for any help! Francis Grosz, K5FBG ___

[time-nuts] Looking for Austron manual

2017-08-24 Thread Francis Grosz
, or at least working properly. If anyone has a manual for this version or a pointer to it I'd really appreciate it. I have the manual for the "D" version but apparently this is considerably different. Thanks in advance for any help! Francis Grosz, K5FBG ___

[time-nuts] Looking for Austron manual

2017-08-24 Thread Francis Grosz
, or at least working properly. If anyone has a manual for this version or a pointer to it I'd really appreciate it. I have the manual for the "D" version but apparently this is considerably different. Thanks in advance for any help! Francis Grosz, K5FBG ___

Re: [time-nuts] 1 PPS users?

2016-12-20 Thread Francis Grosz
transmission line, for example. GPS has made it possible to measure this accurately even over long distances using purpose-built instruments. Google "Phasor Measurement Units" got more information. Francis Grosz -- Message: 2 Date: Mon, 1

Re: [time-nuts] The home time-lab

2016-07-26 Thread Francis Grosz
Jim, IIRC, the IBM 360 mod 91 was one that used a MG set. I think it also required chilled distilled water for cooling. Those were indeed the days of "Big Iron". Francis Grosz >Date: Mon, 25 Jul 2016 21:04:58 -0700 >From: jimlux >To: time-nuts@febo.com >S

[time-nuts] IFCS Repeaters

2016-05-09 Thread Francis Grosz
If you are at IFCS in New Orleans and want to use a repeater, my first recommendation would be the 444.200 machine if you have 70 cm and alternatively the 146.86 2-meter machine. Francis Grosz, K5FBG ___ time-nuts mailing list -- time-nuts

Re: [time-nuts] 1968 Scientific American Magazine: Cesium ClockStandards

2014-12-10 Thread Francis Grosz
If you go to the amasci.com link they have a CD with all of the Amateur Scientist columns in it. It was amazing what some of those guys did way back then in a garage or basement. - Message: 6 Date: Wed, 10 Dec 2014 10:20:16 -0500 From: Paul Alfille To: Di

Re: [time-nuts] "The GPS navigation is the weakest point,"

2011-12-16 Thread Francis Grosz
As the engineer quoted in the article says, Iran is not Afghanistan or Pakistan. Unfortunately Americans aren't very good in geography or history and we tend to lump everybody in that part of the world together, and so forget that Iran was once called Persia and the Persian Empire at one t

Re: [time-nuts] gravity controlled pendulumn clock?

2011-12-12 Thread Francis Grosz
Folks, Actually, the USGS goes around measuring the local gravitational constant in various places. There was a gravimeter set up in the basement of one of the local universities a few years back doing just that. And some time ago, the U.S. spent a fair amount of time, money and effort (

Re: [time-nuts] FS: HP 59309A

2011-10-27 Thread Francis Grosz
Sal, It's also a relatively simple mod to rearrange things in the 59309A to accept the 1 pps input from a GPSDO. I no longer have my unit for the exact reference, but it simply involved lifting one side of a capacitor and connecting it to the external DC BNC on the back. Feed in the 1 p

[time-nuts] Weird TEC data

2011-08-03 Thread Francis Grosz
Hi, Scott, They track because most of Arkansas is part of the Eastern Interconnection and the transmission systems are tied together through that. The general shape follows the loading of the system; that is, as the load increases throughout the day the alternators slip behind; as it decr

Re: [time-nuts] No more 60Hz! TEC Elimination

2011-07-01 Thread Francis Grosz
see how far off things get, not to mention see any large disturbances. There might be some interesting viewing there this summer. There is also more info available on their "Gridwise" program. Francis Grosz ___ time-nuts mailing lis

[time-nuts] Another incermental improvement in atomic clocks

2011-05-09 Thread Francis Grosz
dmag.com%2fNews%2f2011%2f05%2fGeneral-Science-Physics-Developing-An-Accurate-Means-For-Computing%2f Francis Grosz ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and fo

Re: [time-nuts] homebrew H maser

2010-08-31 Thread Francis Grosz
I think the book referred to is The Scientific American Book of Projects for the Amateur Scientist by C. L. Stong (no "r' in Stong) I too used to just read it - great book. It's a collection of some of "The Amateur Scientist" columns by Stong from Scientific American magazine. Unfortunately it'

Re: [time-nuts] 'Discussion of precise time and frequency measurement'

2010-06-16 Thread Francis Grosz
se or frequency modulation should be pretty obvious then. (Note: Use delayed sweep, NOT delayed trigger; i.e., "B starts after delay", not "B triggerable after delay".) Francis Grosz Original Message

[time-nuts] 60 Hz timing

2009-12-14 Thread Francis Grosz
And IIRC, DEC defined 1/60 second as a "jiffy"; it was also used to do task switching on the time-sharing systems (e.g., PDP-10 AKA DECsystem-10). Francis Grosz ___ time-nuts mailing list -- time-nuts@febo.com To unsubscr