At 02:46 01-05-12, you wrote:
that is awesome! with Transistorized Binary Unit and up to 1.1
megacycles. wow!
Hand made, one by one, on Veroboard... sigh...
Marco IK1ODO
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The good old days.
:-)
Rob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Mark Sims
Sent: 30 April 2012 23:05
To: time-nuts@febo.com
Subject: [time-nuts] An interesting freq counter
With a rather freaky display that I have never
Hi all,
I just powered on again my trimble thunderbolt after some time without antenna.
All alarms are green but the obvious leap second pending. BUT: I can't
use UTC time as both tboltmon and lady heather display a No UTC
offset message. I don't remember having seen this in the past. What's
On 01/05/12 11:37, Rob Kimberley wrote:
The good old days.
:-)
My oldest counter has neon lamps behind a line of 0-9 numbers on each
column. It goes to 230 KC. It has the high-stability option rather than
dividing down 50 Hz to 10 Hz in the phanta-stron divider (pot on the
back side to
On more or less of a whim, I found and bought an Ashtech 3DF GPS. The
interesting thing about this particular GPS is that it uses four separate
GPS antennas mounted in a diamond pattern about 1 meter on a side and can
compute not only the usual stuff, but also heading, roll, and pitch
angles. I
According to this:
cedb.asce.org/cgi/WWWdisplay.cgi?80010
it seems that this GPS uses carrier phase tracking... it seems interesting.
On Tue, May 1, 2012 at 3:08 PM, Stan swp...@earthlink.net wrote:
On more or less of a whim, I found and bought an Ashtech 3DF GPS. The
interesting thing about
Hello The Net:
LORAN signals are still being received at a 89700 microsecond GRI.
I concur with others that there is only one station transmitting the
master(M) and the slave(X) signals.
My SRS FS-700 Rx shows equal received signal strength for both signals.
Reports indicate the transmitter is
Hi Stan,
On more or less of a whim, I found and bought an Ashtech 3DF GPS. The
interesting thing about this particular GPS is that it uses four separate
GPS antennas mounted in a diamond pattern about 1 meter on a side and can
compute not only the usual stuff, but also heading, roll, and
Antenna envy!
-John
=
Hello The Net:
LORAN signals are still being received at a 89700 microsecond GRI.
I concur with others that there is only one station transmitting the
master(M) and the slave(X) signals.
My SRS FS-700 Rx shows equal received signal strength for both
In message 1158.12.6.201.135.1335885236.squir...@popaccts.quikus.com, J. For
ster writes:
Next step is to lock up the signal on an oscope, triggered by an
accurate 11.148272 KHz signal ( reciprocal of 89700microsec).
A HP5359A is great trigger-source for that.
--
Poul-Henning Kamp |
These are specifically for attitude determination in mobile environments.
Not sure how good they would be for timing though. I remember seeing
something from Trimble a few years back which did similar.
Rob K
-Original Message-
From: time-nuts-boun...@febo.com
I should say so!!
Rob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of J. Forster
Sent: 01 May 2012 16:14
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] LORAN-C
Antenna envy!
-John
=
Hello PHK,
I will use a HP-3336C with the station 10 MHz (GPS/DO) reference.
Typo: trigger should really be 11.148272 Hz instead of KHz !
Stan, W1LE
On 5/1/2012 11:27 AM, Poul-Henning Kamp wrote:
In message1158.12.6.201.135.1335885236.squir...@popaccts.quikus.com, J. For
ster writes:
In message 4fa006e8.5040...@verizon.net, Stan, W1LE writes:
I will use a HP-3336C with the station 10 MHz (GPS/DO) reference.
Typo: trigger should really be 11.148272 Hz instead of KHz !
You need a really amazing stable and noise-free trigger to lock
onto a 5.5Hz (see below) sine at the
I use a 1.000 MHz crystal oscillator module and a Tek DD501. It produces 1
pulse every (preset count-1) of input cycles. Triggering a scope is
trivial.
-John
=
In message 4fa006e8.5040...@verizon.net, Stan, W1LE writes:
I will use a HP-3336C with the station 10 MHz (GPS/DO)
Moin,
For some time now, i'm wondering why the microwave cavity of Cs
beam standards is U shaped. Ie why does the Cs beam fly first
trough the first subcavity, leaves it, flies a substantial
length trough free space, passes the second subcavity and
then goes to the detector.
If the interaction
85 minutes in that hour...
http://www.taylorusa.com/dual-event-timer-clock.html
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The U shape is called the Ramsey Cavity:
http://www.nobelprize.org/nobel_prizes/physics/laureates/1989/ramsey-lecture.pdf
/tvb
- Original Message -
From: Attila Kinali att...@kinali.ch
To: time-nuts@febo.com
Sent: Tuesday, May 01, 2012 9:47 AM
Subject: [time-nuts] Cs beam cavity: why
Metric minutes.
On 05/01/12, Don Barrdon.b...@gmail.com wrote:
85 minutes in that hour...
[1]http://www.taylorusa.com/dual-event-timer-clock.html
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Hi
The upstream time source may or may not be very good. Since it's PCS at
1.9 GHz and not 900 MHz CDMA, the carriers have a lot of wiggle room. You
can go in and fiddle which signal it tracks.
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]
francesco.messi...@gmail.com said:
I just powered on again my trimble thunderbolt after some time without
antenna. All alarms are green but the obvious leap second pending. BUT: I
can't use UTC time as both tboltmon and lady heather display a No UTC
offset message. I don't remember having
Hi Hal,
On 5/1/12, Hal Murray hmur...@megapathdsl.net wrote:
francesco.messi...@gmail.com said:
I just powered on again my trimble thunderbolt after some time without
antenna. All alarms are green but the obvious leap second pending. BUT: I
can't use UTC time as both tboltmon and lady
Hi Attila,
On 05/01/2012 06:47 PM, Attila Kinali wrote:
Moin,
For some time now, i'm wondering why the microwave cavity of Cs
beam standards is U shaped. Ie why does the Cs beam fly first
trough the first subcavity, leaves it, flies a substantial
length trough free space, passes the second
The tube is like an interferometer. Think of two telescopes
spaced apart x meters. It has the resolving power of an x
meter diameter telescope. It doesn't have the light gathering
power of an x meter telescope.
There is sufficient RF power to flip the state of all the Cs
atoms, so additional
Incorrect, the UTC offset should be sent in the Almanac, the Almanac
having a period of 12.5 minutes max. Not one hour. It should take no more than
12.5 minutes to get the UTC offset when sats are properly being received.
bye,
Said
In a message dated 5/1/2012 11:45:06 Pacific Daylight
The problem is I don't have the software for the unit, but based on the
behaviour of the alarm and status led's I'm confident it is locked. The
symmetricom site may have the software but I would need to agree to an eula
prior to downloading which I don't want to do with my work account. So
Hello Mark,
you could connect the Fury 1PPS output to the 1PPS external sync input of
the PRS-10 Rb and let is self-discipline to GPS. Set the Fury 1PPS jumper
JP4 to raw-1PPS (pins 2 and 3), and that will make the Fury GPSDO generate
the raw 1PPS signal from the Motorola GPS receiver
On 5/1/12, saidj...@aol.com saidj...@aol.com wrote:
Incorrect, the UTC offset should be sent in the Almanac, the Almanac
having a period of 12.5 minutes max. Not one hour. It should take no more
than
12.5 minutes to get the UTC offset when sats are properly being received.
when I posted my
Hello PHK,
Thanks for the tips. I have not done this yet, so I am creeping along.
I also have a 33120A with the the option 001 for using an external
reference.
Sounds like the arbitrary signal capability is the way to go,
If I can not find an appropriate 2100/2100F output.
Thanks Stan,
PhotoShop.
-John
===
Metric minutes.
On 05/01/12, Don Barrdon.b...@gmail.com wrote:
85 minutes in that hour...
[1]http://www.taylorusa.com/dual-event-timer-clock.html
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From memory, the UTC offset is part of the Supplemental data packet that is
sent every second by default.
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: Hal Murray hmur...@megapathdsl.net
Sender: time-nuts-boun...@febo.com
Date:
The UTC offset is in words 6-10, page 18, subframe 4 -- every 12.5 minutes.
/tvb
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and follow the instructions there.
Anyone have a manual for an FEI-Zyfer Nanosync II? It's listed on their
website, but clicking on the link throws up a 404 error
Tnx,
Mike
A closed mouth gathers no feet
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On 05/01/2012 10:30 PM, Tom Van Baak wrote:
The UTC offset is in words 6-10, page 18, subframe 4 -- every 12.5 minutes.
It was added to the broadcast signal as an after-thought, as a separate
upgrade package if you wish. At least back then, I believe they had USNO
to measure the GPS time and
Hi guys,
I was able to simply register at the site then had access to another file
are that had info on the Nanosync II and their monitor software.
Mike
- Original Message -
From: Mike Seguin N1JEZ n1...@burlingtontelecom.net
Subject: [time-nuts] FEI-Zyfer
Anyone have a manual
I have not been able to do anything work and a strong investment in time in
plumbing this week. Hey you have to fix'em occasionally.
Regards
Paul.
On Tue, May 1, 2012 at 3:16 PM, Stan, W1LE stanw...@verizon.net wrote:
Hello PHK,
Thanks for the tips. I have not done this yet, so I am creeping
I am playing around with a OT-20 Office Time that I pulled out of a
dumpster some time ago. I've only just powered it up last weekend and
it without an antenna will illuminate its CDMA green status LED in
about 10 minutes. I've not tried an antenna or hooked up a terminal to
its serial port.
Thought the cdma signals were all gone.
On Tue, May 1, 2012 at 6:50 PM, Pete Lancashire p...@petelancashire.comwrote:
I am playing around with a OT-20 Office Time that I pulled out of a
dumpster some time ago. I've only just powered it up last weekend and
it without an antenna will illuminate
Hi
CDMA is very much alive and kicking in the US.
Bob
On May 1, 2012, at 7:00 PM, paul swed wrote:
Thought the cdma signals were all gone.
On Tue, May 1, 2012 at 6:50 PM, Pete Lancashire
p...@petelancashire.comwrote:
I am playing around with a OT-20 Office Time that I pulled out of a
On 2 May, 2012, at 04:30 , Tom Van Baak wrote:
The UTC offset is in words 6-10, page 18, subframe 4 -- every 12.5 minutes.
/tvb
The leap second warning is also in the same place. How the unit could
know that a leap second is pending but not know the UTC offset is a
mystery.
Dennis Ferguson
Hi Nigel, Magnus, Bjorn the Gang,
Thanks for all your replies to my initial message, I appreciate very much.
I downloaded the lastest version of TimeLab and will try it soon, I just
tested the counter against my 5370B and my different Rubidium sources.
Nigel, if you're referring to the 6680B
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