Re: [time-nuts] Thunderbolt question

2017-08-05 Thread Charles Steinmetz
Arthur wrote: I’d say it would be an MMIC amp similar to this device [Avago MGA-87563] If a chip similar to the Avago part Arthur referenced is what is installed, which seems plausible, the 0.749v on the RF input (Pin 3) is a fault and is caused by an external source of voltage (3.417v)

Re: [time-nuts] Thunderbolt question

2017-08-05 Thread Attila Kinali
On Sat, 5 Aug 2017 10:47:40 -0400 paul swed wrote: > The .5 on the f connector is an issue and thats through the filter on top > of the board made of traces and 3 caps. From Arthur's digging I would agree > he found the chip or one that would work. But that chips voltages

Re: [time-nuts] Thunderbolt question

2017-08-05 Thread paul swed
The .5 on the f connector is an issue and thats through the filter on top of the board made of traces and 3 caps. From Arthur's digging I would agree he found the chip or one that would work. But that chips voltages seem to match so most likely not the issue. What does the F connector measure to

[time-nuts] How a GPS Works

2017-08-05 Thread Bryan _
Interesting video https://www.youtube.com/watch?v=6m0xGwkYYy0 -=Bryan=- ___ 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] Can Lady Heather set PC time directly from a TrimbleThunderbolt?

2017-08-05 Thread Attila Kinali
On Sat, 5 Aug 2017 13:01:56 +0200 Martin Burnicki wrote: > Chris Albertson wrote: > > I'm not a fan of Meinberg because of the way they market freely > > available software. > > I'm sorry you feel this way. > > We at Meinberg have supported the NTP project for

Re: [time-nuts] Can I haz an anti-hydrogen maser now?

2017-08-05 Thread Poul-Henning Kamp
In message <20170805130056.58880...@aluminium.mobile.teply.info>, Florian Teply writes: >The obvious trick would be to choose their distance such that >only their noise cancels... But the good news is that if you mix their output, you would have the worlds most precise DC signal :-)

[time-nuts] Thunderbolt question

2017-08-05 Thread Arthur Dent
Pin 1= 0v Pin 2= 0v Pin 3= 0.749V Pin 4= 4.892v Pin 5= 0v Pin 6= 3.417v I’d say it would be an MMIC amp similar to this device. It has the same pin-out so it is a possibility. The Amp In my newer version is an 23 db gain device but 8-pin so I Suspect your version may have similar specs. Here

Re: [time-nuts] Can I haz an anti-hydrogen maser now?

2017-08-05 Thread Florian Teply
The obvious trick would be to choose their distance such that only their noise cancels... SCNR, Florian Am Sat, 5 Aug 2017 01:09:00 +0100 schrieb Adrian Godwin : > Don't put it anywhere near your hydrogen maser or they'll cancel each > other out. > > > On Sat, Aug 5, 2017

Re: [time-nuts] Can Lady Heather set PC time directly from a TrimbleThunderbolt?

2017-08-05 Thread Martin Burnicki
Chris, Chris Albertson wrote: > I'm not a fan of Meinberg because of the way they market freely > available software. I'm sorry you feel this way. We at Meinberg have supported the NTP project for many years, by donations of money and hardware, testing, submitting bug reports and patches.