Hello Time-Nuts,
Just wondering if anyone out there has a copy of the Frequency
Electronics FE-5440A cesium clock manual? Yes, Silosurplus has one on
ebay for a stupid price but I'm not THAT interested. The aviation
version was the TD-1251/U and the mil version was the O-1824A/U.
I would be more
In message
, Dana
Whitlow writes:
>This would seem to imply that purposely overrating a 'lyt is pretty pointless.
>
>Any comments on this notion?
I've always wondered that myself, and found very little documentation or
wisdom available.
As I understand it, even very brief voltage
Lady Heather has a feature designed just for this application. The TS keyboard
command (and the /ts? command line options) allow setting the system clock from
the time message sent by a GPS receiver (assuming the program has permission to
set the clock). This typically gets the system time
I remember often reading that if you run a 'lyt at a voltage much reduced
from its rating,
the oxide layer would get thinner over time so that in the end, the
effective rating of the
capacitor was about what you had been running it at. This would seem to
imply that
purposely overrating a 'lyt is
I have a bit of a "crude but effective" idea regarding getting
Daylight Savings and local time and such - get the current time (hour)
from local cellular signals with a cellular phone module, like one of
these:
https://www.adafruit.com/category/281
If I understand correctly, you don't need
I’ve designed and built an Arduino based clock that receives the time from an
NTP server, converts the time to voltages, and outputs the voltages to analog
volt or ammeters using the PWM pins on the Arduino. The clock displays hours,
minutes and seconds, each on a separate analog meters with
Probably tapped for 1/2" pipe thread.
Don
On 2019-02-24 12:40, Ben Hall wrote:
Good evening all,
After almost a month in transit, my GN-GGB0710 GNSS antenna arrived
from the auction site "we all know and love." ;)
Unit was not tapped to a proper 5/8"-11 TPI thread. A standard 5/8-11
bolt
for local time keeping with NEMA strings we just use a local offset with DST
rules.
Thomas D. Erb
o:508-359-9684
p:508-359-4396 x 1700
f:508-359-4482
a:97 West Street, Medfield, MA 02052 USA
e: t...@electrictime.com
w:
After starting off with a single GPS module on a RaspberryPi, and
discovering the issues of just having a single clock... I now have
three GPS receivers (and a fourth on the way) of various types, each
with their own antenna. I'm aware that I'm heading off down an
interesting road that will
Am 24.02.19 um 14:39 schrieb Richard (Rick) Karlquist:
yet they got a pass and became SOP. The R lab manager
at Santa Clara Division famously said "no customer chooses
HP products because they have great power supplies."
G.. My HP16500C has a defective PS and my 4274A RLC bridge
Adrian I had the same thing in the same unit. I guess the electrolytic's
were bad in allowing hum through. The tants go Bang and burn. Though all
caps can go bang I suspect.
Paul
WB8TSL
On Sun, Feb 24, 2019 at 5:04 PM Adrian Godwin wrote:
> Just to sneak that back on-topic .. the most recent
Love milspec stories! Always reminds me of some of my favorite quotes:
“Mechanical rules are never a substitute for clarity of thought.” --
Brian Kernighan
". . . rules are a substitute for thought . . ." -- Robert Gunning
"A foolish consistency is the hobgoblin of little minds . . ." --
> Hi all,
> I have not found details about the new product of the Jackson Labs, the
> Phase Station.
> The new driver is now added to the V1.32 Beta version of Timelab.
> It seems to be an alternative of Timepod.
> Can anyone anticipate something?
The PhaseStation 53100A can be thought of as the
In message
, Adrian Godwin writes:
>I think I've had as many shorted-out tants as dried-out electrolytics.
I doubt Len worried about dry-out, he was worried about shorts.
A lot of people failed, and still fail, to realize that tube-voltage
electrolytics are an entirely different
On 2/24/19 5:37 AM, Rice, Hugh (IPH Writing Systems) wrote:
While HP wasn't a direct defense contractor, we did sell a lot of test
equipment to defense contractors.The big American submarines had a Cesium
Standard or two as part of their instrumentation systems.I know little
about the
On 2/24/2019 5:37 AM, Rice, Hugh (IPH Writing Systems) wrote:
While HP wasn't a direct defense contractor, we did sell a lot of test equipment to defense contractors.The big American submarines had a Cesium Standard or two as part of their instrumentation systems.I know little about
I've looked at automatically determining the local time zone offset from UTC a
few times... and always considered jumping off a cliff to be a better option.
Huge, unreliable, always changing boundary data bases... local anomalies due to
political reasons... lotsa really boring testing and
Good evening all,
After almost a month in transit, my GN-GGB0710 GNSS antenna arrived from
the auction site "we all know and love." ;)
Unit was not tapped to a proper 5/8"-11 TPI thread. A standard 5/8-11
bolt went in maybe two full threads. I modified an old tap I had in the
drawer into
Just to sneak that back on-topic .. the most recent tant failure I had was
in a KS-24361. It was after the dc-dc converter so it didn't look like a
short to the input - it just increased the current draw. Running off a
cheap laptop supply, which overheated and melted instead of shutting down
or
I think I've had as many shorted-out tants as dried-out electrolytics. It's
just that they appear in 80s gear instead of 60s. Then there was the flood
of high-esr electrolytics from when - early 2000s ?
On Sun, Feb 24, 2019 at 1:10 PM Rice, Hugh (IPH Writing Systems) <
hugh.r...@hp.com> wrote:
On 2/24/2019 4:02 AM, Rice, Hugh (IPH Writing Systems) wrote:
Several people have asked about the Len Cutler ban on Aluminum Electrolytic Capacitors in HP Frequency Standards. Rick Karlquist could shed more light on this too. The legend of the ban was passed along to me, perhaps by Lou
Hi,
Yes, that would be a cool feature, but would come with complexity that
would be best outside of such a core system. With enough interface, you
could let an off-system configuration tool do that and then setup the
time-zone rules. Conversion from position to time-zone and then look up
the
Hi all,
I have not found details about the new product of the Jackson Labs, the Phase
Station.
The new driver is now added to the V1.32 Beta version of Timelab.
It seems to be an alternative of Timepod.
Can anyone anticipate something?
Luciano
www.timeok.it
This python package appears to do what you want
https://github.com/MrMinimal64/timezonefinder
So a small linux distribution on a raspberry pi zero (given that that also
has the usual TZ database, if it's not all in the timezonebuilder data)
would do the job. Maybe Lady Heather could use that to
While HP wasn't a direct defense contractor, we did sell a lot of test
equipment to defense contractors.The big American submarines had a Cesium
Standard or two as part of their instrumentation systems.I know little
about the application, but heard it was part of the communication
Several people have asked about the Len Cutler ban on Aluminum Electrolytic
Capacitors in HP Frequency Standards. Rick Karlquist could shed more light on
this too. The legend of the ban was passed along to me, perhaps by Lou
Mueller, who liked to tell stories of the old days. In 1985, we
I would love something that gave a list of options set from the location in the
NMEA string.
Such as this time zone or different, with nearby zones first; DST on/off. Could
get to be a significant effort very quickly, but maybe there are xml files out
there that would make it easy?
John
On
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