Hello,
Tuesday, November 25, 2008, 0:36:20, Morris Odell wrote:
M In the meantime the discussion prompted a baord redesign to find some
M real estate for a Li cell :-)
Not necessarily... You can always get (or make) batery holder with
wires and affix it with piece of adhesive foam or velcro to
There should still be a 3001 manual around the town somewhere- I sold
two or three dead 'uns plus a copy of the manual about three years
back to a local-likely he still has it/them stashed away. Think it was
Doug, ZL2BCF over at Ch West.
DaveB, CH CH, NZ
- Original Message -
From:
Time-nuts,
I have to admit that I have an interest in gravitational
anomalies.
If anybody out there has nothing better to do, here is the
stuff to spend some minutes.
In early 90's a Chinese researcher (Zhou) opened a debate
claiming to have observed anomalous behaviour on atomic
clocks
I got some private answers.
Sorry, I've been concise not to bias your thoughts.
Only, I would precise that for unlocked I mean a clock in
which the crystal is free running not locked to Rb or Cs, and not to lock
between clocks,
Antonio I8IOV
Time-nuts,
I have to admit that I have an interest
Time-nuts,
I was wrong with my interpretation.
The clocks were all working ok.
Thanks.
Antonio I8IOV
I got some private answers.
Sorry, I've been concise not to bias your thoughts.
Only, I would precise that for unlocked I mean a clock in
which the crystal is free running not locked to Rb or
There is an article in the Nov 22, 2008, issue of Science News
(www.sciencenews.org) about variations in the decay rate of
radioactive atoms. The title is Half-life (More or Less)
where more or less is an idiom for approximately.
There is no explanation for the observed variation. As you might
Hi everyone,
In message [EMAIL PROTECTED], Marco IK1ODO -2
writes:
Hi all,
I have to carry a 10 MHz standard frequency signal inside an EMC
screened room via fiber optic cable.
Not willing to re-invent the wheel, do something like an optical
standard frequency link exist on the market?
I
In looking at the off-the-shelf boxes, jitter seemed to vary from ps range
to tens of ns. Also, how stable is the 34km of fiber... One of the
manufacturers I looked at had a 1550nm option, so it's probably not a stretch
to get it on a 100GHz ITU grid channel or other CWDM channel.
Scott
I'm looking into something similar: transmitting an H-Maser signal
(probably 10MHz) over some 34km using CWDM SFPs. At first
glance this
seems fairly uncomplicated: get some SFPs, and SFP
connector + cage.
Use a fast opamp/differential driver to drive the transmitting SFP,
and use a
[EMAIL PROTECTED] wrote on 11/24/2008 08:31:22 PM:
Bruce wrote:
Analog time constants of several hours are generally considered
impractical due to the lack of suitable low noise components
principally high value resistors and capacitors.
So how do you propose to get around this
I thought some of you might get a kick out of this too:
I set up a shell-script to snapshot the tek4014 window from my
AducLoran receiver every few seconds.
The I managed to get ImageMagick to turn a selection of those images
into an animated gif:
Hi Everyone
I have consistently had success repairing laboratory instruments(my
small business) when I have a schematic and I have consistently failed
without one, lots of opportunities are slipping threw my fingers.
I want to invest in tools that will help me troubleshoot without a
schematic. I
By the time you get the signal from the maser through 34 km of fiber optic,
what you get at the end might be not better than a decent GPSDO...
Make sure you go through your drift and jitter budget before commiting.
Didier
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL
Patrick,
Please do not take this the wrong way, but having all the test equipment in the
world is not going to help you troubleshoot if you do not have the foundation to
begin with. The foundation I am referring to is both educational and
experience. Obviously, experience takes time and is a
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