Hi Wayne:
The problem is that when and how DST is implemented is a political decision at the state level. When those rules that
apply today are implemented in firmware (easy to do) the product tells the wrong time when those rules change.
In the case of the Heathkit GC-1000 the DST firmware
strom...@nexgo.de said:
> Over wired Ethernet you can expect to synchronize a bunch of systems to
> within a ~200µs envelope of absolute time and maybe a factor of 2x-3x lower
> if you can control certain things more tightly than usual if you run those
> system on a single hop switched LAN
On Wed, Jan 2, 2019 at 4:03 AM Chris Burford wrote:
> My current residence does not allow a permanent GPS antenna therefore I am
> limited in its use.
[separate thread since I'm not answering the question that was actually asked.]
Perhaps not applicable to your situation, but in the US federal
> Use the Rb as your reference and log the time offset of its PPS.
> Manually steer vs a 10 hour GPS PPS data set once a week.
> You probably will stretch it out to a couple weeks after things settle in.
I'm with Bob here. Once a week, once a month, once a year, even once a
lifetime: the choice
On Wed, January 2, 2019 4:15 am, Leo Bodnar wrote:
> Here is the phase noise at 10MHz
> http://www.leobodnar.com/files/mini%20GPS%20clock%20-%20phase%20noise%2010MHz.png
Does that plot have enough resolution to show any narrow band spurs? That
looks really clean for a programmable clock source.
Charles Wyble wrote:
I built a dedicated server room in my house, with it's own air
conditioner. I've been working on overall instrumentation , especially
temperature.
If the rasPi is a dedicated system and does not serve extra tasks, just
record its CPU temperature, no extra sensor needed.
I'll give the window placement a try and see if I can maintain a usable lock.
Thanks for the assistance.
Chris
Hal Murray wrote:
>
> > I do realise that the long term stability of the GPSDO is somewhat superior
> > to a Rubidium source. I'm planning on using my TICC to validate both my
Another option would be to phase lock the existing XO in the transceiver
instead of "replacing" it. With a very narrow PLL bandwidth, you should not
degrade the transceiver stock performance.
Didier KO4BB
On Wed, Jan 2, 2019, 4:17 AM Leo Bodnar Here is the phase noise at 10MHz
>
Hi
Use the Rb as your reference and log the time offset of its PPS. Manually steer
vs a 10 hour
GPS PPS data set once a week. You probably will stretch it out to a couple
weeks after things
settle in.
More or less:
PPS starts at some offset. Call that zero.
As the days go along:
PPS goes
Here is the phase noise at 10MHz
http://www.leobodnar.com/files/mini%20GPS%20clock%20-%20phase%20noise%2010MHz.png
There will be overall noise increase of about 4dB at 15.6MHz
Leo
On 1 Jan 2019, at 17:00, time-nuts-requ...@lists.febo.com wrote:
> From: Mark Goldberg
> Leo Bodnar's GPSDOs do
Hi.
Usually on a crowded band, to be nice to the RF neighbours (often
ourselves!) Irrespective of the "mode" used, and/or getting the "best"
performance (small signal sensitivity) from a receiver.
Also, when multiplying/mixing up to microwave frequencies, again for a
clean signal.
The OP
Just inside a window can work for a GPSDO. One of our labs at Dartmouth
has metallic-tinted windows, so for that we hang a little puck antenna
just outside. Not ideal, but it gets signal.
David
On 1/1/19 11:53 PM, Hal Murray wrote:
>> I do realise that the long term stability of the GPSDO
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