I want one!!
Rob K
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Robert Darlington
Sent: 10 July 2011 6:47 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Am I the only Time Nut who doesn't wear a
You'd need one for both wrists and learn to look at the time on
alternate watches or you'll end up with lop sided upper arm muscle
growth. Who needs dumbbells when you can work out just by looking at
the time :)
I wonder what the average time for the novelty to wear out is on one of these.
Steve
I still wear my Tag Heuer F1 midsize from back in the 80's. Although
I'm on my second plastic bezel, the first wore so bad it eventually
dropped off, and I have been through countless straps, the sapphire
crystal is as good today as the first day I got it. They just don't
seem to scratch at all, l
My car has an interior look similar to this:
http://upload.wikimedia.org/wikipedia/commons/thumb/c/c7/Jaguar_XKR_Convertible_interior.jpg/800px-Jaguar_XKR_Convertible_interior.jpg
Time ago, I pick a young engineer (quite digitally oriented, may I say)
to go somewhere. He saw the three gauges
I got to tell ya Javier,
I am deeply troubled by this report.
BillWB6BNQ
Javier Herrero wrote:
My car has an interior look similar to this:
http://upload.wikimedia.org/wikipedia/commons/thumb/c/c7/Jaguar_XKR_Convertible_interior.jpg/800px-Jaguar_XKR_Convertible_interior.jpg
Time ago,
To me when someone tells me a time of day the first thing I visualize is
the clock hands and not numbers. I suspect the present gen visualize
numbers. They must have trouble with 60 minutes in the hour.. a quarter
past six and such..
At 10-07-2011, you wrote:
Apparently for those who
I'm getting my two trusty Z3801As up and running after 18 months of
downtime and a 500 mile move. Unit #1 came up just fine.
Unit #2 has been running for about 18 hours and is working OK except
that the health status is showing an EFC error. The EFC value is above
1e6 (currently 1014166)
My comment was a bit tongue in cheek.
Novelty value only. I'm sure about a day wearing that would be enough for
most mortals.
:-)
Rob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Steve Rooke
Sent: 10 July 2011 10:28 AM
To:
Dear John,
On 07/10/2011 04:38 PM, John Ackermann N8UR wrote:
I'm getting my two trusty Z3801As up and running after 18 months of
downtime and a 500 mile move. Unit #1 came up just fine.
Unit #2 has been running for about 18 hours and is working OK except
that the health status is showing an
Re sapphire crystals, my Tisot Titanium has a Saphire crystal and after approx
13 years still has not scratched. It aslo keeps reasonably accurate time
(with
a few seconds per month.)
- Original Message
From: Steve Rooke sar10...@gmail.com
To: Discussion of precise time and
Then there is this little number...
http://forums.watchnet.com/index.php?t=treegoto=415170rid=0
On Sun, Jul 10, 2011 at 10:56 AM, Rob Kimberley
r...@timing-consultants.comwrote:
My comment was a bit tongue in cheek.
Novelty value only. I'm sure about a day wearing that would be enough for
I don't think I would call the coarse tuning adjustment 'accessible',
but it does exist.
http://www.realhamradio.com/GPS-oven-journey.htm
Of course, before digging into a mess like that, check the standard
things like power supply voltages, outer heater current draw, bad solder
joints that
Wow!
On 11 July 2011 03:20, William H. Fite omni...@gmail.com wrote:
Then there is this little number...
http://forums.watchnet.com/index.php?t=treegoto=415170rid=0
On Sun, Jul 10, 2011 at 10:56 AM, Rob Kimberley
r...@timing-consultants.comwrote:
My comment was a bit tongue in cheek.
I agree that the extra converter is to provide isolation and input
voltage flexibility. Mine runs on 24V, and I assume that the first
converter is the only difference from the more common 48V units.
Also, each stage of conversion should provide additional power supply
rejection performance. It
Curious concept... with ball bearings and cam belts... eeer...
transmission belts ;)
El 10/07/2011 17:20, William H. Fite escribió:
Then there is this little number...
http://forums.watchnet.com/index.php?t=treegoto=415170rid=0
___
time-nuts
Hi John,
use gravity.
Turn the unit upside down, and see if it makes the error go away. Try all 6
faces.
Maybe you find one where the g-sensitivity of the crystal brings the efc
to below 90% again.
Easy and non-invasive to do. You may see a couple of ppb change in crystal
frequency as
At 18:54 10/07/2011, Ed wrote:
I agree that the extra converter is to provide isolation and input
voltage flexibility.
Thanks to all that answered my questions; very interesting thread.
Possibly only input voltage flexibility and EMC considerations, since
the isolation was already given by
omni...@gmail.com said:
Then there is this little number...
http://forums.watchnet.com/index.php?t=treegoto=415170rid=0
From their web page:
The power reserve is 52 hours, and the watch is actually very accurate
at about plus or minus 4 seconds a day.
4 seconds per day? I'd expected
On 7/10/11 12:56 PM, Marco IK1ODO wrote:
At 18:54 10/07/2011, Ed wrote:
I agree that the extra converter is to provide isolation and input
voltage flexibility.
Thanks to all that answered my questions; very interesting thread.
Possibly only input voltage flexibility and EMC considerations,
Hal,
No, it shouldn't have nothing to do with the belts, as they're the same as
timing belts, or toothed belts, and would work the same as gear teeth. The
accuracy will come from the balance wheel arrangement, and with all the
jewels (bearings), one would think it would sure move free. However,
Dear John,
On 07/10/2011 04:38 PM, John Ackermann N8UR wrote:
I'm getting my two trusty Z3801As up and running after 18 months of
downtime and a 500 mile move. Unit #1 came up just fine.
Unit #2 has been running for about 18 hours and is working OK except
that the health status is showing an
I'm looking to get a rubidium source to use as a reference for a spectrum
analyser, frequency counter or similar test equipment. All these need a 10 MHz
input.
I've looked on eBay and found a few that seem to be in plentiful supply
* EFRATOM 10MHZ LPRO-101
* FE-5680A
* SLCR-101
* Efratom
On 07/11/2011 01:37 AM, Dr. David Kirkby wrote:
I'm looking to get a rubidium source to use as a reference for a
spectrum analyser, frequency counter or similar test equipment. All
these need a 10 MHz input.
I've looked on eBay and found a few that seem to be in plentiful supply
* EFRATOM
David,
The FE-5680A is always plentiful, and a lot of them are generally mounted
on a PC board, from pulls, along with having a decent price. The main thing
is availability, which means spare parts if you need them. I also know that
I've seen these used as internal timebases for counters before
Hi
The LPRO is reasonable choice. Lots of them out there and nothing about them to
drive up the price. The FRS-C is a similar unit, but a bit older, I see no
reason to pay more for one than an LPRO. The SCLR is a repackage of the LPRO,
no reason to pay more unless you need the low height.
The
On the FE-5680A, there are quite a number of versions that have that
number and look the same. Most run from one voltage input (+15V ? from
memory) but some take that and a +5V to run. Most can be tuned with
software, but the dual voltage one I got some years back -- I never
found a way to
4 seconds per day? I'd expected better from a very expensive watch.
Are belts nasty when it comes to keeping good time?
No, it shouldn't have nothing to do with the belts, as they're the same as
timing belts, or toothed belts, and would work the same as gear teeth. The
accuracy will come
Hi Hal,
On 11 July 2011 17:12, Hal Murray hmur...@megapathdsl.net wrote:
...
The crystals on my PCs are ballpark of 1 PPM per C. I'd expect a watch
crystal to be tuned to human temperature environments and be better than
that. I guess I'll have to get setup to collect some data.
This
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