Re: [time-nuts] DIY VNA design

2016-08-22 Thread Jim Cotton
The intersection of HP equipment && Time-Nuts && VNWA mailing lists is >> At least two ;^) Jim n8qoh ___ 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

Re: [time-nuts] Downsizing dilemma, HP 3335A

2015-11-11 Thread Jim Cotton
I work at a university and my experience has been that the students are willing to learn and quite competent. I advised an aerospace engineering student on building and troubleshooting the RF source for a plasma photo chromatography unit he built from scratch (he specified and had the tank

Re: [time-nuts] WWV/WWVH audio simulator?

2014-01-03 Thread Jim Cotton
I have played WWV or CHU when I want to know the time but not be bothered by extraneous sounds. I live in Michigan, USA. When I built my first homebrew RF spectrum analyzer I found that I had to spend a week stopping CHU and another local AM station from coming in on the power line. A cheap

Re: [time-nuts] Nifty MINI TIC for DMTD work

2012-11-19 Thread Jim Cotton
I am interested in one. Jim Cotton On 11/19/12 3:28 PM, Daniel Mendes wrote: At this interest rate you´ll sell more units than Apple will sell Iphone 5´s... ;) Daniel Em 19/11/2012 18:15, cdel...@juno.com escreveu: As Bert mentioned once the amount if interest is established purchase

Re: [time-nuts] ebay warning

2012-02-21 Thread Jim Cotton
In an electronics mall (one city clock square with 10 stories) in szschaduan (sorry my pinyin is awful) [a trading/wholesale center for clothing and electronics 4 hours south of Beijing by car] I saw several electronics stores 10m x 10m with 2-3 employees decent HP, Tek, RS, ??? equipment that

Re: [time-nuts] 5370A on eBay

2012-01-18 Thread Jim Cotton
5328A, 5342A, 5345A, 5370A/B each one has something it is best at, figure out what you really need the unit to do. Jim Cotton n8qoh ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time

Re: [time-nuts] GPS interference and history...

2012-01-13 Thread Jim Cotton
(College of Engineering ~1/4 mile long building ) I counted 14 mushroom antennas, I see other patch antennas on windows... Jim Cotton On 1/13/12 9:29 AM, Jim Lux wrote: On 6/10/11 7:01 PM, Hal Murray wrote: li...@rtty.us said: There's an enormous amount of gear out there that gets timing off

Re: [time-nuts] HP10811-60111 oven failure + repair

2011-10-21 Thread Jim Cotton
I had a 10811 with an open thermal fuse. I think that I just replaced it with a 105 degrees C thermal fuse from Radio Shack since the price after shipping was about the same. Jim Cotton n8qoh ___ time-nuts mailing list -- time-nuts@febo.com

Re: [time-nuts] HP10811-60111 oven failure + repair

2011-10-21 Thread Jim Cotton
$1.79 + tax and I have the fuse today, looks like their closest match stocked in stores is 128 degrees C Jim Cotton n8qoh On 10/21/11 9:54 AM, J. L. Trantham wrote: I also ordered some 'replacement' fuses from Allied or Mouser or the like (I can't recall) that were close to the specified

Re: [time-nuts] Fast than light neutrino

2011-09-25 Thread Jim Cotton
What about rotation of the earth? Jim Cotton n8qoh On 9/25/11 2:35 AM, Javier Serrano wrote: On Sun, Sep 25, 2011 at 1:36 AM, Magnus Danielson mag...@rubidium.dyndns.org wrote: I was about to ask for the specific papers of time calibrations, even if the overview presentation indicates

Re: [time-nuts] fluke.l monitor for Thunderbolt . . . the sagacontinues

2011-07-07 Thread Jim Cotton
It is between four and five Yuan. Four Yuan at the local market will buy what four dollars will buy in the US (as long as you are not buying imported goods). jcc On 7/7/11 11:06 AM, Chris Albertson wrote: You forget that this Fluke.L guy's first design replaced three diodes with wire jumpers

Re: [time-nuts] latest on the lightsquared 'saga'

2011-03-03 Thread Jim Cotton
The other scenerio is buy stock in the leading GPS makers and assume that they and Lightsquared will lobby effectively and everyone will be forced to buy new GPS units... There is precedent in that, the DTV converter box vouchers... Jim Cotton n8qoh On 3/3/11 3:09 PM, jimlux wrote: On 3/3/11

Re: [time-nuts] Slightly OT - GPS-Based Accurate Direction Finding

2010-08-27 Thread Jim Cotton
happened... I think the patent issue may have had something to do with it since the company had a relationship with Litton. Jim Cotton n8qoh b...@lysator.liu.se wrote: Does anyone know how laser gyroscopes are developing? Laser gyroscopes - as in Ring Laser Gyroscopes or as in Fiber

[time-nuts] Looking for a 5370 red digit cover/window

2010-02-27 Thread Jim Cotton
in Kalamazoo, Michigan, USA. Jim Cotton n8qoh ___ 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.

Re: [time-nuts] HP5372A CRT schematics

2009-10-27 Thread Jim Cotton
If it is a Sony with the non-fr4 board material, look for a hairline crack in the board with the flyback, the unit may have been dropped in shipping. Jim Cotton n8qoh Magnus Danielson wrote: Fellow Time-nuts, I have problem with a HP5372A, where the CRT failed and only shows a vertical

[time-nuts] Motorola GPS board with OnCore module questions

2009-05-29 Thread Jim Cotton
the OCXO... b. Has someone already hacked a HP 10811, or HP 10544 to this board? Jim Cotton n8qoh ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow