[time-nuts] GPS jamming test in SW US this month.

Interesting article linked off slashdot. Apparently the Navy will be doing some GPS jamming experiments. Would imagine it could cause some GPSDO drift http://m.slashdot.org/story/312173 Ryan Stasel IT Operations Manager, SOJC University of Oregon Sent from my iPhone

Re: [time-nuts] Transformer inrush current and transformer simulation

> OnFri,03 Jun 2016 12:37:26 -0400"Mike Monett" > wrote: >> I found a significant error in the LTspice analysis. I was >> wondering how the current could jump instantaneously at zero when >> the voltage is applied at the peak. That violates magnetism. >> It turns out

Re: [time-nuts] One sure way to kill your FE-5680A or FE-5650A

Hi Thanks for the heads up !! It almost sounds like they are doing some sort of “use flash as eeprom” trick and not quite getting it right. Maybe updating a “how many times turned on” counter in that memory space. Bob > On Jun 7, 2016, at 5:22 PM, Skip Withrow wrote: > > We recently had

[time-nuts] One sure way to kill your FE-5680A or FE-5650A

We recently had a customer that purchased an FEI FE-5650A (basically a repackage version of the FE-5680A) and reported that it worked for several hours, then died. We promptly sent another unit, and he reported that it died as well. He had nothing but power hooked to the unit. On return of the f

Re: [time-nuts] THE Original Time Interval Counter

I calibrated and repaired dozens of these beasts in the Air Force. A Fluke 207-1 was our reference standard at the time. Still have a 207-1 on the shelf and the whip antenna in the attic! Steve K. > On Jun 7, 2016, at 3:21 PM, wrote: > > Well, This is probably not the original but I remem

[time-nuts] THE Original Time Interval Counter

Well, This is probably not the original but I remember using one "in the day" Corby___ 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] Some FE405B data

On Tue, 7 Jun 2016 11:36:43 -0700 wrote: > Attached here is a long term AD plot of an FE405B. > > Stays in the 10-13ths all the way up to 10,000 seconds! > > This unit has only been operating for about 2 weeks. This is interesting. Do you have an idea why your unit peforms so much better than

Re: [time-nuts] GPS NOTAMS issued for US west coast

Seems there are a bunch of NOTAMs on this subject though the US from June 6 to June 11 https://pilotweb.nas.faa.gov/PilotWeb/noticesAction.do?queryType=ALLGPS&formatType=DOMESTIC#ZSE On Tue, Jun 7, 2016 at 11:27 AM, Scott McGrath wrote: > All > > Check the GPS NOTAMs for the west coast apparen

Re: [time-nuts] Goodie for British Timenuts!!!

On 6/7/2016 10:38 AM, cdel...@juno.com wrote: RACAL MA259 FREQUENCY STANDARD FROM 1965 Looks neat Corby, Internally they're a rebadged Sulzer more or less. There's been one for sale on eBay in the US for years, literally, at the somewhat ridiculous price of over $3,000. item: 2523994

Re: [time-nuts] Goodie for British Timenuts!!!

Boy, that looks an awful lot like a re-branded Sulzer 5 with Sulzer power supply! > On Jun 7, 2016, at 1:38 PM, wrote: > > Hi, > > Saw this while trolling for goodies! > > http://www.mullardmagic.co.uk/racal-ma259-frequency-standard-ra17-ra117-r > af-navy-goldfinger-james-bond-ra1218-ra1772-

Re: [time-nuts] Satellites in the Sky

Yo Don! On Tue, 7 Jun 2016 11:51:40 -0500 "Don Lewis" wrote: > While in U-Center, bring up the ‘World’ graphic and it will show you > which satellites are visible to your location and which ones are > being tracked. The gpsd client xgps also does this, just no 'world' backgrounnd. > Put your

[time-nuts] Some FE405B data

Attached here is a long term AD plot of an FE405B. Stays in the 10-13ths all the way up to 10,000 seconds! This unit has only been operating for about 2 weeks. In a month I'll repeat this plot and also include the aging rate. I have found that these oscillators exhibit less drift than most othe

[time-nuts] GPS NOTAMS issued for US west coast

All Check the GPS NOTAMs for the west coast apparently USG will be conducting GPS interference testing at NAS China Lake with a radius of 300NM Advisory states GPS unavailable for up to 6 hours at a time >From 6 June to 9 June Sorry on a phone or would have copied NOTAM text __

[time-nuts] Goodie for British Timenuts!!!

Hi, Saw this while trolling for goodies! http://www.mullardmagic.co.uk/racal-ma259-frequency-standard-ra17-ra117-r af-navy-goldfinger-james-bond-ra1218-ra1772-ra1792-ma50-ra181 RACAL MA259 FREQUENCY STANDARD FROM 1965 Looks neat Cheers, Corby _

[time-nuts] Satellites in the Sky

I thought I would share a tip for those interested in ’visualizing’ the GPS constellation overhead – ‘seeing’ the satellites you are currently tracking. While there are many GPS monitor apps available, ...some free - some not ...each app will have various means to depict which satellites are ov

[time-nuts] THE Original Time Interval Counter

Hi: The stopwatch: 200 years old and still ticking http://www.gizmag.com/birthday-200th-stopwatch/43431/? -- Have Fun, Brooke Clarke http://www.PRC68.com http://www.end2partygovernment.com/2012Issues.html The lesser of evils is still evil. ___ time-n

[time-nuts] Jupiter-T timing receiver oddness

I added support for the Jupiter-T receiver to Lady Heather and noticed something odd. On the sat position/signal level map sat PRN 9 was always being drawn with a small black circle in the middle. I could not figure out what was causing this... until I noticed that sat PRN 27 (which was visibl

[time-nuts] Symmetricom TimeCreator 1000

A Symmetricom TimeCreator 1000 has come into my possession. It is a GPS receiver with DOCSIS TIme interfaces, 10.24 MHz and 1 PPS outputs. The unit appears to function, however I have no manual. I have stumbled across a few commands that provide some information but if anyone has more I would ap