Just as a note you can reconfigure the time pulse output any of the Ublox
modules (doesn't have to be the timing module) via commands to give out a
pulse up to :
7 Series :0.25 Hz … 10 MHz
NEO-6G/Q/M/P/V : 0.25 Hz to 1 kHz
NEO-6T :0.25 Hz to 10 MHz
Don't know if this helps anyone.
Cheers,
Additional information :
The Ublox NEO-6T divides their internal 48MHz clock down so 10Mhz doesn't
divide correctly and is jittery but 8Mhz is fine.
Anthony
On Fri, Sep 20, 2013 at 7:27 AM, Anthony Stirk upu...@gmail.com wrote:
Just as a note you can reconfigure the time pulse output any of
Hi
There is no instruction booklet for the NTBW50's and LH. The program is
targeted at a TBolt. I think it's great that it happens to work at all for the
NTBW50. The stuff about the filter settings has been noted by and posted by
several members here on the list. I've seen it on my units here.
Hi
The biggest issue is sawtooth correction. To take care of the sawtooth issues
you need to sync up the correction data with the signal into the GPSDO. That's
a lot easier when both come out once a second than when one is continuous and
the other is still only once a second.
Bob
On Sep 20,
I may also look into a DIY choke ring for my antenna. With the large pole I
have now, it will be no problem to put a rather large ground plane under the
antenna if that will help. I'll do some searching on that.
I'll keep the thing running, but I may have to switch it at some point if I get
Hi Corby,
What pins are the line and the neutral connected to at the moment? What pins
are linked?
What you describe is typical of a 110/120/220/240 setup with the windings
between 1 8 and 29 being the 10V taps.
You could try connecting a low voltage AC supply (between5 and 15 v from a
Hi Corby,
I had a look at some circuits and it’s pretty much what I expected. The 120V
tap supplies control relays including the external pressure relay (pin F on
rear panel connector, pin E is neutral) and neon indicators. The supply to the
HV transformer is relay controlled so you would have to
NASA's Deep Space Comet Hunter Mission Comes to an end
The news release includes this paragraph:
After losing contact with the spacecraft last month, mission
controllers spent several weeks trying to uplink commands to reactivate its
onboard systems. Although the exact cause of the loss is
Dave wrote:
We have plenty outages here, so I may look into a UPS of some sort
but I have a rather large generator that I always turn on after
about 1/2 hour or so.
The UPS is to keep master oscillators (and for some of us, ovenized
voltage standards) running uninterrupted from the time of
I was thinking of keeping a couple of batterys floated across the supply, since
it will run on 24V. I'll have to figure out what I'll need for maybe 2 hours.
Not sure what it's drawing now at 30V, but wouldn't be hard to measure.
Couple more things.
What is the foliage filter and will it
Bob,
Does your Rb send the serial out on the DB-9, or did you solder in a
connection? I'm looking at mine and it looks like pin 8 is connected to
something and pin 9 seems to come in to an empty SMT slot for a cap or
resistor. I was thinking of bringing a ribbon cable out between the
Hi
If the unit is dropping into holdover, something is wrong with the number of
sat's it's seeing. If you have saved a location properly, it will only go into
holdover when it's got zero sats. If it does not believe it's got a proper
location it will drop into holdover when it goes below 4
Hi
All of my FE Rb's have serial out of a 9 pin D connector. They bring power (+15
and +5) in on that connector, and put 1 pps and 10 MHz out on the same 9 pin D.
There are (apparently) dozens of variations of the FE 5680. There is no single
standard for what is hooked up where. I'd be *very*
So, I take it no one has looked at these units yet?
Thanks,
John Westmoreland
On Thu, Sep 19, 2013 at 7:51 PM, John C. Westmoreland, P.E.
j...@westmorelandengineering.com wrote:
Hello All,
I just spoke with JL - I should have one of the Jackson Labs' LC_XO's in
my hands soon (TCXO
Mine insists on determining a negative altitude. sometimes it's called
a good position, sometimes not. Eventually, it becomes 'good even with
-altitude!
Now I understand why it goes in and out of holdover, but what about the
bad altitude??
Jim
wb4...@amsat.org
On 9/20/2013 6:22 PM, Bob
Hi
GPS uses a model of the earth. It calculates position relative to this model.
The model does *not* correspond to sea level. It's very common to be driving
along the beach and see negative altitude numbers with an honest GPS. If you
are located within 100' of sea level, you may see negative
Hi
I'd bet that Said has seen a few of them …..
Bob
On Sep 20, 2013, at 6:37 PM, John C. Westmoreland, P.E.
j...@westmorelandengineering.com wrote:
So, I take it no one has looked at these units yet?
Thanks,
John Westmoreland
On Thu, Sep 19, 2013 at 7:51 PM, John C. Westmoreland,
Understood. If I do anything, it will probably be to cut pins 8 and 9 at the
board side of the connector and route the serial connections there. I dislike
opening this thing up any more often than I have to. Thanks for all the info.
Bob
From: Bob Camp
Bob,
Oh yes - but he would want to refrain from comment I would think.
Regards,
John
On Fri, Sep 20, 2013 at 4:31 PM, Bob Camp li...@rtty.us wrote:
Hi
I'd bet that Said has seen a few of them …..
Bob
On Sep 20, 2013, at 6:37 PM, John C. Westmoreland, P.E.
Winders?
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of David J Taylor
Sent: Saturday, 21 September 2013 2:51 AM
To: Time-nuts mailing list
Subject: [time-nuts] Space mission comes to an end becuase of a computer time
tagging problem
Hi
Low bid wrist watch used as time base?
-
I'd bet there is some form of master time tick in their RTOS that keeps
everything pumping. Loose the time tick (or the time tick count) and it all
goes away…
As the onboard computers accumulate radiation induced
Hi:
My Nortel unit seems to go into holdover when LH is still reporting one
usable satellite. When doing a survey it would go into holdover below
four because I believe it is doing 3D position samples which would
require four.
On a related note I picked up some 110 pin Z-Pack connectors,
Hi
If you have one *good* sat, it should stay out of holdover.
Bob
On Sep 20, 2013, at 9:01 PM, Paul Berger phb@gmail.com wrote:
Hi:
My Nortel unit seems to go into holdover when LH is still reporting one
usable satellite. When doing a survey it would go into holdover below four
I'm thinking I was dreaming because it's still at 468, like before. It is
probably from when I was moving the antenna around and didn't turn the unit off
and of course I didn't write it down.
Still wondering if holdover can be reset without turning it off.
Happy equinox.
Dave
I'm 1250' ABOVE sea Level.
LH currently reports an altitude of -2500'. What's up with this??
Jim
On 9/20/2013 7:29 PM, Bob Camp wrote:
Hi
GPS uses a model of the earth. It calculates position relative to this model.
The model does *not* correspond to sea level. It's very common to be
LH has provisions for various reset levels; I don't know if they apply to
the Nortel. Try 'r', and see where that leads.
JimT
Sent from *my* galaxy (Nexus).
On Sep 20, 2013 9:03 PM, quartz55 quart...@hughes.net wrote:
I'm thinking I was dreaming because it's still at 468, like before. It is
Besides the famous Android stint described in Google bug 5485
https://code.google.com/p/android/issues/detail?id=5485 that took 2 years
to fix, so many Android phones system clocks were 15 seconds fast then, I
just found the source of another discrepancy where Google spreads the leap
second offset
Christopher,
Obviously GOOG needs a time-nut on their staff!
Interesting stuff!
John W.
On Fri, Sep 20, 2013 at 6:48 PM, Christopher Quarksnow cquarks...@gmail.com
wrote:
Besides the famous Android stint described in Google bug 5485
https://code.google.com/p/android/issues/detail?id=5485
Thanks for the inputs!
I ended up disconnecting the TX and powering up the windings separately
to figure out the wiring.
The wire on pin 8 did indeed to turn out to be mis-wired!
The added taps allowed for 120/240 or 100/200VAC inputs.
Got it wired back up and it's working fine at 120VAC now!
29 matches
Mail list logo
