On 18/01/14 04:09, Jim Lux wrote:
On 1/17/14 11:35 AM, Magnus Danielson wrote:
On 2014-01-16 20:29, Hal Murray wrote:
anders.e.e.wal...@gmail.com said:
The real benefit of dual-frequency is you can do post-processing with
PPP.
Javad has some modules but they start at 3 kUSD - if anyone knows
Hi Brett,
In the 5328A the unregulated 25V DC supply and OCXO run whenever the unit is
connected to power. The on/off switch controls the main circuits power supply.
The triac (Q12) and opto-coupler (U6) turn on the fan when the 3.5V DC supply
is present (its only active wthe the unit switched
I had five 5328A, three military and two normal, and still own three. The fan
runs whenever the unit is turned on and never stops. In the military version
the fan is much noisy.
Antonio I8IOV
Da: bre...@gmail.com
Data: 18/01/2014 0.03
A: time-nuts@febo.com
Ogg: [time-nuts] HP 5328A fan -
I have a NTGS50AA working with the Lady Heather last version which
incorporate support for this board (Thanks Mask Sims).
When I bought the board I used the Trimble utility GPS Monitor (GPSTM
Commissioning Tool V1.5) to set it up and in the way knowing that it was
previously working in
Oops, I meant Mark Sims, sorry.
Ignacio EB4APL
On18/01/2014 15:27, EB4APL wrote:
I have a NTGS50AA working with the Lady Heather last version which
incorporate support for this board (Thanks Mask Sims).
When I bought the board I used the Trimble utility GPS Monitor (GPSTM
Commissioning Tool
Ignatio,
Not exactly what you have asked, but I notice that Trimble Tboltmon
won't connect to a device which requires Odd parity.
You can select Odd parity, but it fails to connect, and the details at
the bottom remain fixed at N,8,1
So for Odd parity I can only use Trimble Studio. I
Ignacio,
The Strangely it worked a couple of times maybe it has auto baud routine
that is active shortly after reset or power on.
Stanley
- Original Message -
From: EB4APL eb4...@cembreros.jazztel.es
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent:
Hi Ignacio
I'm not familiar with the GPSTM tool, trying to run it here generates
exception errors, but from what I see when it's trying to boot it's much the
same format as Trimble's various other offerings.
If you run Trimble GPS Monitor though, version 1.6 was the latest but 1.05
is
Hi Antonio,
It should run when the ON/OFF switch is ON but not if it's OFF. If the fan runs
whenever the power is connected there is a fault, probably a shorted TRIAC.
Interestingly on the 5328B they added an RC snubber across the TRIAC which may
indicate they had problems with the A model.
I have a military model, and there is a separate controller for the fan.
Boy, it's so noisy that if I have to use it, I'll replace the fan
first. I have no idea why the fan setup in these things is so darn
complex!
Also all of my 5328's have different front end trigger modules. The
manual I
I am looking for a physical clock (not software) that will indicate local
solar time. IOW when the sun is at its highest point, the clock would
reliably read 12:00 throughout the year.
Is there a commercial product or kit available for this?
Thank you for any suggestions.
P Nielsen
On 1/18/14 2:25 PM, P Nielsen wrote:
I am looking for a physical clock (not software) that will indicate local
solar time. IOW when the sun is at its highest point, the clock would
reliably read 12:00 throughout the year.
So it needs to take into account the equation of time?
there's
VCR's were well known to reliably read 12:00 throughout the year...
Do you want to make or buy? Using a microprocessor, it's easy to drive a
stepper-motor based wall clock at slight offsets from true 32 kHz or 1 Hz rate.
Converting UTC/1PPS to solar rate and time for your given location and
On 1/18/14 2:25 PM, P Nielsen wrote:
I am looking for a physical clock (not software) that will indicate local
solar time. IOW when the sun is at its highest point, the clock would
reliably read 12:00 throughout the year.
Is there a commercial product or kit available for this?
Small brass cannon. Use a small telescope pointed at the sun at transit, with
the output side focused on the fuse.
Loud bang ,.. it's 12:00 o'clock.
-- FL
On Saturday, January 18, 2014 4:23 PM, Tom Van Baak (lab) t...@leapsecond.com
wrote:
VCR's were well known to reliably read 12:00
I will try it, but always it happened after connecting the serial cable
to the GPSDO that had been on for a long time.
Regards,
Ignacio
On 18/01/2014 17:07, Stanley wrote:
Ignacio,
The Strangely it worked a couple of times maybe it has auto baud
routine that is active shortly after reset
HI
If noon is the point you are concerned about, and it’s a fixed location, a
fairly simple set of tables in a micro should do the trick. Past that it’s a
selection for the time base, anything from a 555 timer through Cesium and / or
GPS could be used. Even with a table, the deviation during
On 1/18/14 4:22 PM, Tom Van Baak (lab) wrote:
Add GPS if you want the clock to self-adjust when moved east or west (noon
moves a couple of milliseconds per meter). This feature would be especially
cool if the clock were used in a vehicle.
Ooohh... an automatic self adjusting sundial for
On 1/18/14 2:25 PM, P Nielsen wrote:
I am looking for a physical clock (not software) that will indicate local
solar time. IOW when the sun is at its highest point, the clock would
reliably read 12:00 throughout the year.
Once you buy into a microprocessor, it's pretty easy to make all
Just in case you want to build a clock with an Arduino..
http://jorisvr.nl/arduino_frequency.html
ADEV measurements, etc.
take home message.. absolute accuracy is a few kHz out of 16 MHz...
probably a 100 ppm crystal.
On some Arduinos (or Teensy3's which is what I use) there's a provision
Hi Nigel,
The GPSTM tool (The program identifies itself as GPS Monitor v 1.5, to
contribute to the entropy) also gives the same errors when connected to
my NTGS50AA, caused by bad programming that becomes crazy when listening
to a device that sends data at 9600 Bd, but in the rare occasions
http://www.precisionsundials.com
The sawyer looks like it fits the bill.
$8,000
Sent from mobile
On Jan 18, 2014, at 4:25 PM, P Nielsen pniel...@tpg.com.au wrote:
I am looking for a physical clock (not software) that will indicate local
solar time. IOW when the sun is at its highest
On 1/18/14 5:11 PM, Bill Dailey wrote:
http://www.precisionsundials.com
The sawyer looks like it fits the bill.
$8,000
Actually, only $2,100.. that fancy helical thing Renaissance was the 8
kilobuck one..
The Sawyer thing has a lot of nice design features. Very clever how
they do the
Lady Heather can display time in LMST/LAST/GMST/GAST
I made a version that has an option to just show the date/time in full screen
mode for Jim Lux/JPL but never heard back from him.
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Some time ago I found this - a small algorithm implemented in MSP430 with photoresistor
to synchronise with the sun. Search for Intelligent Dusk/Dawn Light Sensor
Richard S. LaBarbera. Of couse, you asked for a true hardware solution, but maybe this is
interesting for you.
Matthias
On 1/18/14 5:23 PM, Mark Sims wrote:
Lady Heather can display time in LMST/LAST/GMST/GAST
I made a version that has an option to just show the date/time in full screen
mode for Jim Lux/JPL but never heard back from him.
I have passed it on to the person
Thank you for the suggestions so far.
When I said no software, I meant not something like this:
http://www.jgiesen.de/sunmoonclock/index.html
I was hoping someone here might have come up with a cheap quartz clock
driven by a microprocessor, and the necessary code. That would seem to be
the
http://www.pendulumofmayfair.co.uk/view.asp?pid=272cat=Longcase%20Clocks
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On Sat, Jan 18, 2014 at 2:25 PM, P Nielsen pniel...@tpg.com.au wrote:
I am looking for a physical clock (not software) that will indicate local
solar time. IOW when the sun is at its highest point, the clock would
reliably read 12:00 throughout the year.
Put a stick vertically in the ground.
How about a Fred Flintstone wrist sundial? :-) Isn't that what he wore in
the cartoon?
Actually, the idea of a sundial clock that was mobile sounds pretty cool.
Joe Gray
W5JG
On Sat, Jan 18, 2014 at 5:55 PM, Jim Lux jim...@earthlink.net wrote:
On 1/18/14 4:22 PM, Tom Van Baak (lab) wrote:
List,
Tonight on the news they reported that an EMS helicopter
had to make an emergency landing as the pilot or co-pilot was blinded in one eye
by a green laser. As of the report time his
one eye was still blind.
Now that the proverbial feces has hit the old fashioned
rotater cooling
I'm working on it now. Got the arduino UNO, need to go get a cheap cook
tomorrow
On Jan 18, 2014, at 18:01, P Nielsen pniel...@tpg.com.au wrote:
Thank you for the suggestions so far.
When I said no software, I meant not something like this:
Hopefully. Lasers are not toys. The energy densities are enormous and
they can and do blind people.
-Bob
On Sat, Jan 18, 2014 at 9:19 PM, Perry Sandeen sandee...@yahoo.com wrote:
Will owner
permits be coming in the future?
Regards,
Perrier
I am looking for a physical clock (not software) that will indicate local
solar time. IOW when the sun is at its highest point, the clock would
reliably read 12:00 throughout the year.
Is there a commercial product or kit available for this?
Thank you for any suggestions.
P Nielsen
-Original Message-
From: Jim Lux
Actually, only $2,100.. that fancy helical thing Renaissance was the 8
kilobuck one..
The Sawyer thing has a lot of nice design features. Very clever how
they do the equation of time compensation, and I like the wedge.
I just added a equation-of-time routine to the next release of Lady Heather.
..It can offset the time display by the Equation of Time. The calculated
offset seems to agree rather well (like around 0.01 minutes) with the one on
the NOAA website. It could be made a little better, but that
ll the solutions proposed so far don' meet the criterion that the clock not
be software. It's too esy to make a software display. yu just start with
UTC and apply a formula from an amanac.
But what was requested was something made with gears and springs
I wonder if you really need a special
From: Chris Albertson
ll the solutions proposed so far don' meet the criterion that the clock not
be software. It's too esy to make a software display. yu just start with
UTC and apply a formula from an amanac.
But what was requested was something made with gears and springs
I wonder if
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