Exciting. After opening the outer oven cylinder someone was in that section
before as the shock compound has been removed. And the failure appears to
be the inner oven heater is open.
A better description of the unit.
The FE-15a oscillator assembly is about 6" nd 3 sections.
Outer tuning caps and
Bryan wrote :
Shipping costs from Canada is horrendous, possibly what you ordered crossed the
package/weight criteria for the cheaper shipping option
The reverse (postage U.S. to Canada) is also true and has been for
several years.
For example, last week I ordered two log books from
Walter, for you Rb box, look for info on the common Efratom standards of
that vintage, and see if any look like what you have inside the plug-in.
I remember the FRK and M-100 (a variation of which I have). These are
the ones in about a 4 inch cube format. They may not exactly match
yours, but
I found this assembly while digging through workshop goodies to post up
to the Stuff Season page, a *Frequency and Time Systems p/n 1696*. It is
the accessory portion of a 5Mhz standard. It has a true doubler/filter
to create 10Mhz, plus a 10MHz TTL output, and a secondary 1MHz output.
It's
On Thu, 11 Feb 2021 11:22:37 +0100, you wrote:
>So, this raises the question: why is your LPRO so much better?
>I mean, going straight down to 1e-14 is on par with the best
>research Rb standards I am aware of.
>
> Attila Kinali
It's not too different from what I got
Interesting comment about non-self-starting clocks. I have an old “FDR”
clock with a synchronous motor; it has to be started by spinning a knob on
the back. The case has molded into it the words, “F.D.R., The Man of the
Hour.” I suppose it dates from just after 1933 when Roosevelt became
Hi Simon,
Yeah, I remember those days too. I learned this from the NBS/NIST line
of educational papers. The NIST TN 1337 is recommended reading. The Bill
Riley handbook is for sure a good read, even if it may not dwell very in
deeply into why things are the way they are.
A main issue I failed to
Shipping costs from Canada is horrendous, possibly what you ordered crossed the
package/weight criteria for the cheaper shipping option
-=Bryan=-
From: time-nuts on behalf of
rcb...@atcelectronics.com
Sent: February 13, 2021 11:58 AM
To: Discussion of precise
Hi Hal,
I have one of these big (maybe 14" dia) old office clocks, still
working, hanging on the garage wall at the farm, next to a modern WWVB
clock. I don't worry about what time it says, but I sometimes look to
estimate total power outage time (can be quite a lot up there) since the
last
My firm has electrictime.com - sold power station master clock as part of
Telechron - now we just make big tower and street clocks.
We have a bunch of master clocks in our museum - two in our on-line exhibit -
I'm hoping to get a small article in IEEE Spectrum. One master clock was made
in an
They reduced the price by 20% but they want $19.40 for shipping. I
decided I didn't need the development kit. I ordered one of the AM WWVB
kits back in early Nov and the shipping charge was only $4.50.
Original Message
Subject: [time-nuts] WWVB BPSK Atomic Clock Receiver
The mains timing error was still running ~50 seconds fast at midnight
yesterday, and this morning was still at +40 or so seconds. But over
Saturday the frequency has dropped lower than I've seen it go for several
days, at one point it must have dropped to 48.8Hz, below scale on my
display and
Hi,
For some appliances however, I question if a clock display is really
needed. A toaster certainly wouldn't need anything more than an RC. A
couple of percent error on how long I warm up lunch probably won't matter!
However, some appliances and consumer grade equipment do utilize RC
Several answers.
At temperature it can be adjusted to 5,000,000.0XX XX using just the coarse
adjustment. The Xs are because it has not really been on long enough to
seriously stabilize. Its been off/cold for easily bet 20-30 years.
The urq family of references were intended for shipboard use
Thank you Magnus, that was very helpful. I'm busy running through Bill
Riley's handbook, and trying to get a grip on this.
I'm not a stats expert at all, so the cogs are slowly turning!
Cheers,
Simon
On Fri, Feb 12, 2021 at 5:33 PM Magnus Danielson wrote:
> Hi,
>
> On 2021-02-12 12:25, Simon
Hi, all of y'all,
would you please snip the cited parts that are long out of
context?!!one!eleven!!
I wonder how that reads on a cell phone.
cheers, Gerhard
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Hi
What frequency is it putting out?
Bob
> On Feb 12, 2021, at 9:45 PM, paul swed wrote:
>
> I see a glass tape on the inner oven with writing "40.0". Thats it.
> Assuming C its a long way off.The flask is fine the ovens are heating to
> 110F. Both of them. So somethings wrong. Interesting as
That 'flag' feature can be found on the very early (1930s) Telechron
digital display clock, the model 8B01, as a separator between the hours and
minutes digits. A lever on the back panel allowed the user to reset the
flag from red to white when power was applied.
Loss of AC power meant the
att...@kinali.ch said:
> And, please do not forget that modern mains frequency control is something
> quite recent as well. Especially outside (west) Europe. Having mains
> frequency powered clocks being off several minutes per month was the norm
> 50-70 years ago.
I have a (fuzzy) data point
Well, 40 C is fairly close to 110 F. Maybe this is a special model
intended only for indoor, controlled room conditions - or outdoor, cold
climate only. Why? I dunno, but I can guess. Having both heaters set to
the same temperature makes sense, so the open end being the same as
inside would
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