Got a 113BR clock many years ago because it looked like the clock in the
Smithsonian. Used a 103 precision OCXO for the source.
It is noisy. That's part of why it has a heavy metal case. I expect that
a rebuilt stepping motor might have been quieter. I kept it in a larger
wooden box lined with R19
Looks like you have great advice. But I will add if the tantalums show the
corrosion do not fire it up. Unless you like smoke and other damage. A good
way to extend the time you will spend getting it going and cleaning up the
acid all over everything. Lots-O-fun.
Good luck and I have always heard t
Hiya,
My thanks for the various replies including to Luciano for the 115BR
manual and Chuck for the timely advice about old caps!
I'll take a put at summarising the various replies and my own
observations now I've the 115BR Manual and the 115CR unit itself - any
errors in same mine alone;
On Fri, 23 Dec 2016 13:10:30 +
Peter Vince wrote:
> Would it not make sense now for the
> next generation of operating systems to do that? Yes, those who need to
> find the elapsed time between two time-stamps would still have a problem,
> but isn't the overwhelming major requirement just to
petervince1...@gmail.com said:
> It seems to me that the major problem with the leap-second is the inability
> of current computer operating systems to represent it, and this is due to
> their using a second count since 1970 rather than writing it out as we would
> by hand.
Your suggestion doesn'
Peter,
There is so many ways to solve this, and most of them have already been
discussed and nothing really happend.
Letting the time-stamp represent time in TAI and do UTC as presentation
is less intrusive way of achieving the same thing. Yet, it has not
happen. Essentially will the POSIX s
Seconds from 1970 always works. The decision to add a leap second or not
only effects the written out time and date.
If you want to know the number of seconds between tow written out dates
then you need to know if leap seconds were introduced. This is REALLY
hard for distance further dates.
It seems to me that the major problem with the leap-second is the inability
of current computer operating systems to represent it, and this is due to
their using a second count since 1970 rather than writing it out as we
would by hand. While it doubtless made sense in the days of floppy discs
to s
On 22 December 2016 at 20:54, Bill Byrom wrote:
> Read about the synthesizer design of that generator here:
>
> https://ia600407.us.archive.org/10/items/Hewlett-Packard_
> Journal_Vol._42_No._2_1991-04_Hewlett-Packard/Hewlett-
> Packard_Journal_Vol._42_No._2_1991-04_Hewlett-Packard.pdf
>
Cheers,
Hi
On a sweep generator with a magnet tuned YIG, supply ripple is a very common
issue ….
Bob
> On Dec 22, 2016, at 9:00 PM, n2lym wrote:
>
> Hi Bob,
>
> I don't have issues at 60, 120, or 180Hz in a 60Hz country. Even with a 500KV
> line a few thousand feet away. I can hear the corona on th
I think case #1 tells you that the frequency step is not occurring on the
sweeper as both The source and receiver are locked to GPS and no trace of the
step effect is seen
I would be much more inclined to think that the transverter is encountering
some type of power supply related artifact.
Hello Hugh & Luciano —
Luciano: Hugh said his clock was a 115CR, not BR. The CR has the mechanical
digital display.
I have a 115BR that I want to bring back on the air after about 30 years of
power-off in my father’s lab. The state of any electrolytic and tantalum
capacitors after that m
They are fun little (ha, ha) clocks. There really is no need
to ramp up power. Go for broke, and turn it on.
The only issue you will find in these is a host of wet tantalum
caps that may, or may not be bad. They are on terminal strips,
and are the caps in silver plated metal cans with teflon se
Hi,
I have the complete manual of the HP115BR. Pse contact me directly to send
you the file.
If you need I can suggest some service activity normally are needed by this
old clock.
Luciano,
tim...@timeok.it
From "time-nuts" time-nuts-boun...@febo.com
To time-nuts@febo.com
Hi Bob,
I don't have issues at 60, 120, or 180Hz in a 60Hz country. Even with a
500KV line a few thousand feet away. I can hear the corona on the ham
bands at times.
Mike
On Thu, Dec 22, 2016 at 05:15 PM, Bob Camp wrote:
Hi
In a country with 50 Hz power lines, figuring out anything a
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