2. interesting observation: turning the unit 90 degrees onto its right
hand side immediately increases the output frequency by 10 mHz (reversible);
turning the unit 90 degrees onto its left end immediately decreases the
output frequency by 10 mHz (also reversible)
This meant that the g-sensit
On Mon, Jun 3, 2019 at 11:01 PM Andy Backus wrote:
> 2. interesting observation: turning the unit 90 degrees onto its right
> hand side immediately increases the output frequency by 10 mHz
> (reversible); turning the unit 90 degrees onto its left end immediately
> decreases the output frequenc
There might also be some confusion about which bg7tbl equipment is being
discussed. Karl mentioned the GPSDO but from comments Andy has made I think
he's evaluating a non-disciplined OCXO, like
https://www.ebay.co.uk/itm/132729183455
On Mon, Jun 3, 2019 at 11:29 PM Adrian Godwin wrote:
>
>
> On
I owe a big apology to any interested in the BG7TBL 10 MHz OCXO sold on eBay:
I reported some observations -- which were completely in error (due to
equipment mishandling).
Preliminary observations are (instead) --
1. after a week powered up, precision (over half an hour) is less than +/-
1
On 6/3/19 8:52 AM, Richard (Rick) Karlquist wrote:
FWIW, there is a nice article in IEEE Spectrum, Oct. 2014, page 42 on
OLC's that starts out by showing the 1956 (non-commerical) clock by
Parry and Essen. It has a tutorial on OLC's and a history of the
second. The author is Prof. Lodewyck
How often Lady Heather gets a satellite position report depends upon the
receiver type. It can range from every second to once per minute.
-
> (there seems to be some finite latency in LH's constellation reports, but I'm
> not sure how
much -- perhaps Mark will comment).
_
On 5/29/2019 6:16 AM, Attila Kinali wrote:
On Tue, 28 May 2019 22:56:35 +0200
Mike Cook wrote:
c. The first commercial cesium clocks were available in 1956, but the second
did not get redefined until 1967. There is no rush.
Which caesium beam standards were available in 1956? AFAIK t
Hi Time Nuts,
If some of you are attending the IMS show in Boston this week, you are welcome
to stop by at our exhibition booth #580 (AXTAL). It would be convenient if we
can agree on a mutually acceptable time an date, so we could meet as a group.
Please let me know. I will be happy to coordi
Hi
A little about the “why” of all this ….
Few of us have ideal antenna locations. Even what we consider to be “really
good” is still
quite a ways from ideal. A concrete tower 50’ above everything else with a
clear view of
the sky down to zero degrees in every direction is “ideal”. Due to it’
Does anyone know where to find docs for FE-1125A quartz standard?
Thanks!
Jim
___
time-nuts mailing list -- time-nuts@lists.febo.com
To unsubscribe, go to
http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
and follow the instructions the
I think you may be missing the most likely primary contributor.
Each GPS receiver (and, thus, each GPSDO) tracks a constantly-changing
"constellation" of satellites. Each rx switches constellations as it
sees fit, depending on reception conditions as it sees them, and no two
receivers will tr
11 matches
Mail list logo
