[time-nuts] An update on my Efratom FRK with "inoperative lamp"

2022-03-08 Thread Julien Goodwin
As the project has now stalled I figured I'd send another update on my FRK with the current state. The FRT: Although the replacement cap I'd picked up (KEMET PEH169MD4470QB2) was perfect in two dimensions plus the mounting, it turned out to be way to tall. I'll pick up a smaller option at some

[time-nuts] Re: Measuring oscillators against GPS - Trimble NetRS

2022-03-08 Thread Skip Withrow
Hello time-nuts, Would like to comment on a couple of the points that Tom Wallace made about measurements with the NetRS. BTW, all the cheap ones disappeared from eBay in a hurry! I was going to pick up another, but think I will wait awhile for the prices to cool again. 1. The Trimble part numbe

[time-nuts] Re: Phase coherence with 2X GPSDO

2022-03-08 Thread Andy Talbot
Where are the GPS antennas wrt. you 'moving around'? Could it be that while you were watching the paint drying, you didn't move much. But when you moved away, the RF pattern as a result of local reflections of the signal from the satellites (from you) were enough to upset the receiver to give the

[time-nuts] Re: Phase coherence with 2X GPSDO

2022-03-08 Thread Bob kb8tq
HI > On Mar 8, 2022, at 2:31 AM, ed breya wrote: > > Just an interesting observation. Last night, shortly after I wrote about my > dual GPSDO system, I decided to take a look at it, with the usual scope setup > looking at both 10 MHz outputs. It looked like one of those reasonably good > time

[time-nuts] Re: Measuring oscillators against GPS - mosaic T

2022-03-08 Thread Bob kb8tq
Hi The Mosaic T dev board is the same as the normal Mosaic dev board except they populate it with a T module and likely make some other minor “stuffing” changes as well. The gotcha is that you can quickly and easily order the normal dev board online. For whatever reason that’s not true of the T