Yes, please, I would like one evaluation kit with an LTE-Lite
SMT module.
Michael Naruta
3170 W Water St
Port Huron MI 48060-2432
(810) 987-8873
On 09/19/2014 02:31 PM, S. Jackson via time-nuts wrote:
Hi guys,
sorry for announcing a commercial product here, but I thought this might
Here's some more info Joe
My Blitzortung.org station 1162 reboots daily.
It is located at 42 degrees latitude.
GlobalTop PA6H GPS module. The antenna is a Motorola patch in
the attic, looking through wooden boards and tar shingles. I
have the antenna against the underside of the roof,
Thunderbolt PRECISION GPS 10mhz Standard's LED Monitor
I received two from fluke.l 16 days after I sent my PayPal payment.
It was well-packaged and he fit both in one box to save me
shipping costs.
They came with a DB-9P already soldered on the cable and a
typical DC power jack. He even
True Bruce. Alas, those trees to the West are matched by
trees to the East. Power lines run in front of the house
to the South. And the towers, guy wires, and wire antennae
are to the North in the back yard. It's like looking up
a funnel to see the satellites.
I have another Motorola patch
Fascinating Bruce. I had expected more degradation from
the shingles. The indoor antenna was a temporary set up
until I could mount the outdoor one. It works well
enough that I use it as a back-up antenna.
I suppose an advantage to having an older home is the
roof sheathing is composed of
It is already exported.
Lester Veenstra wrote:
Delivery charges calculated at time of shipment. Special handling charges
may apply. Subject to export controls;
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Do anyone have a troubleshooting suggestion?
I've been having a chronic problem with one of the TAPR
Thunderbolts that I bought; it just stops communicating.
I have to power it down and back on to talk to it.
I originally attributed it to my PC's RS-232 interface,
but since I have gotten the
Please excuse the individual message.
Tom, I sent you a direct reply over 24 hours ago, and
I suspect that e-mail from me to you is being filtered,
as I also sent you a direct e-mail on 6/April about
my Thunderbolt problem. I have been using your
tvb leapsecond address.
Yes, I'd appreciate
Please excuse the individual message.
Tom Van Baak, I sent you a direct reply about my
Thunderbolt quitting and I suspect that e-mail is
being filtered somewhere. I have been using your
tvb LeapSecond address.
Please reply to my a...@comcast.net and aa8k.arrl.net
addresses, in case Comcast
I just received a Thunderbolt from fluke.L to
replace the TAPR Thunderbolt I have that fails.
I paid fluke.L on May 19 and it arrived in
Michigan, USA on June 3.
I'm in my second day of testing with the fluke.L
Thunderbolt and it is working fine so far.
In January I bought the Thunderbolt
Trimble Thunderbolt: I once forgot the minus sign keying in
latitude for the stored position, and it ran for days.
I wondered why I was having trouble seeing the satellites. :)
David C. Partridge wrote:
After a forced cold start in an unknown location, the TB will still be
searching for
Wouldn't that affect the path of the pendulum
by interacting with the Earth's magnetic field?
:)
J. Forster wrote:
How about putting a high voltage, high frequency on the bob and wire, so
any body part that gets within say 2 feet draws giant arcs? :))
-John
I missed out on the group buy because I didn't hear
about it until it was over.
I'm looking at the one that fluke is selling on eBay,
version 3.00. Has anyone had any problems with these?
Mike - AA8K
Thomas A. Frank wrote:
tvb indicated that the unit builds were from ~2005, and indeed, the
Ah, excellent. I'm also a TAPR member.
Thank you.
Tom Van Baak wrote:
I missed out on the group buy because I didn't hear
about it until it was over.
I'm looking at the one that fluke is selling on eBay,
version 3.00. Has anyone had any problems with these?
Mike - AA8K
Stay tuned;
Wife: Maybe he really IS your best friend. :)
Powerful lock: We have a big, old house safe
that has stopped opening to the combination
(the original factory combination). I'm guessing
corrosion; debating whether to call a locksmith.
Inaccessibility: We're about a half mile from
an
Head is slang for toilet.
Michael Sokolov wrote:
Neon John [EMAIL PROTECTED] wrote:
I'd have put a head in each cube
if that had been possible.
What kind of head? Or whose head?
Curious,
MS
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Basically, we get ours from a 230 Volt,
center-tapped transformer secondary.
The center tap is also earthed. We can
connect 115 Volt appliances between either
end of the transformer and center-tap neutral.
Higher-current appliances connect to both
ends to get the full 230 Volts.
The neutral is
I used to be the roadie for The Fourth Dynasty,
a hard rock band back in the 1960's. Built a
neat box that the drummer could use to flash
various colored floods with his foot. Built an
ultraviolet strobe light (this is in the 60's).
I even played an audio oscillator on certain
tunes. We had so
Got mine a couple of days ago.
Thanks TAPR! I finally have a standard besides WWV.
Mike - AA8K
Richard W. Solomon wrote:
Have folks received their T-Bolts from the last batch via TAPR ?
A friend ordered one the first day, got his confirmation and is still
waiting.
Thanks, Dick,
I love my new Trimble Thunderbolt.
Thank you TAPR and Time-Nuts!
I was thinking of putting insulation
all around the Thunderbolt to thermally
stabilize it. It's in my basement and
the temperature there rarely gets above
18 C.
That would also help with my dedicated
power supply, as the 12
http://www.leapsecond.com/pages/tbolt/power.htm
Nic McLean wrote:
Can anybody tell me what sort of current the power supply for a Thunderbolt
needs to be able to supply. I'm at the salt mine and my thunderbolt is in
the shack so I can't measure the draw. I intend to build a power supply
Not to worry Ulrich, he was using a form
of derisive humor. He was insulting Prologix
as undesirable.
It would be similar to referring to Microsoft
as the M-word.
Mike - AA8K
Ulrich Bangert wrote:
Steve,
after I read your mail I have been completely perplexed because I could by
no
Opps, my bad.:)
Chuck Harris wrote:
Mike Naruta AA8K wrote:
Not to worry Ulrich, he was using a form
of derisive humor. He was insulting Prologix
as undesirable.
Surely, you jest!
He was complaining about PASCAL. A really bad word
among those forced to use it.
-Chuck Harris
Some (Penrose, Nottale) suggest that time may be discrete rather
than continuous.
Though 10E-43 second might be difficult to measure.
Poul-Henning Kamp wrote:
It is a perfect example of what I said earlier: people cannot grasp
that time do not come in parcels...
I have a house battery with a TAPR HPSDR LPU
http://www.tapr.org/kits_lpu.html
A little overkill, but it's quiet and a back
up supply for the ones in my Open HPSDRs.
Mike - AA8K
Pete Lancashire wrote:
Anyone running with a power supply with built in UPS ?
A long time ago (15yrs) I did
An interesting NIST brief:
Perfect Faults: A Self-Correcting Crystal May Unleash the Next
Generation of Advanced Communications
http://www.nist.gov/public_affairs/tech-beat/tb20131105.cfm#dielectric
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On 14-01-19 03:20 PM, Chris Albertson wrote:
My feverish brain now cranks out that all we need is a electromechanical
WWVB receiver, thus no active electronic parts. That would be a nice little
challenge.
That could work. I remember seeing an only World War II vintage teletype
machine. It
In 1983 we were testing Loran for a vehicle
tracking application. We had a van with a
Loran aviation antenna mounted on the roof
and a relatively inexpensive marine Loran
receiver.
We started with an informal test. This was
miles inland, about an hour's drive North
of Detroit, Michigan.
We
“Receivers which cannot tolerate LightSquared will get in
trouble in North Korea!” commented one well-known GPS
manufacturer. “Today's receivers don't have protection. We just
completed our ad [for the June issue of GPS World] which
somewhat covers this.”
An interesting half-truth. So,
On 05/17/2012 05:38 AM, Tom Holmes wrote:
The LED current could also be switched with a very long rise/fall time so
that there isn't any transient, in the abrupt sense of the word. Who's gonna
see the difference?
In a group that has GPS synchronized clock hands?
HERESY!
:)
Tom Holmes,
I don't know if my Thunderbolt installation is
good, but here is my experiment.
The Tbolt is bolted to a 6 mm thick copper plate
10 cm wide and 56 cm long, weighing 3 kg. It's
a piece of buss-bar that I bought from the local
scrap metal dealer. Silver-plated too.
The equipment is in my
From what I've found, the Trojan and Deka golf cart batteries
seem to perform the best. Also good are Superior Battery and
Crown Battery. I have two Deka GC-15 in series to run the
equipment and house LED power-failure lighting.
Other brands may be manufactured out-of-country, even though
Metric time
Yes! Bring on the deciday instead of the hour;
the centiday instead of the minute. Get rid of
this 3600 stuff?
H. Maybe it should be the microyear instead.
If only we had eight fingers instead of ten,
we would have saved so much effort developing
computers.
Mike - AA8K
Wow. Same screw-in fuse here in USA.
I always wondered why it was the same.
Speculated that it was to save tooling costs.
Brilliant.
Mike - AA8K
Poul-Henning Kamp wrote:
I don't know if this was the same in other countries, but the first
set of screw-in fuses approved for house
I can only draw on my experience in the past as
an avionics technician and Private PIC.
How about a different perspective on this?
Imagine that I bring aboard a box of rocks for
my entertainment. It may be magnetic, radioactive,
or some such. Now, these rocks could theoretically
influence
The standard I used in my department was that
when anyone changed code, they commented out
the original code and then entered their new
code with a date and explanation of the change.
That way you have the what and why the previous
developer originally thought he was doing and
what, when, and
That is an interesting question.
It could be possible if it had two antennas or its antenna was
not omni-directional.
Mike - AA8K
iov...@inwind.it wrote:
Does a stationary (not in motion) GPS receiver know where the North is?
As far
as I can understand, it doesn't, isn't it?
Yes, but it is rather difficult to manufacture an
isotropic antenna. Unless the antenna is oriented
so as to present a normal hemisphere of same gain,
it might be theoretically possible to model the gain
versus direction, coupled with the knowledge of
location of satellites and received
Tom, this would be taking advantage of the
irregularities of the GPS receive antenna
to determine the orientation of the antenna.
For example, if the GPS antenna were a Yagi,
and it was pointed with the major lobe in
an Easterly direction, when you listen to
a satellite in the East, you know
I bought a copy of Spinrite and it recovered
a drive that wouldn't boot.
When rebuilding my PCs, I run Spinrite on the
drives to make sure a drive is not failing.
I've used it to decide when to retire my HDs.
It's been months since I've used it, I should
probably do a preemptive run, but on
Oh, I thought it was my PC.
Neat John, we like recycled code.
The KE5FX remote access is fun too, works well.
I'm surprised that your antenna receives so well,
being at -7.6 m. Doesn't it get wet?
(I know; I'm just trying to be funny)
Mike - AA8K
John Miles wrote:
Hi, Mike --
Some (Penrose, Nottale) suggest that time
may be discrete rather than continuous.
10E-43 second might be your basic tick.
Mike S wrote:
Alternately, he simply means there is no universal epoch for time, so
just as a spacial coordinate requires a defined reference, so too does a
time
Perhaps because we may move about in the three spatial
dimensions as we move unidirectionally in the temporal dimension?
Charles P. Steinmetz wrote:
The puzzle is why we perceive the spatial dimensions so differently from
the temporal dimension. It is a fascinating question, but may
There was an inequality in the Vietnam draft lottery.
Your chance of being born on February 29, 1 in 1461.
The chance of February 29 being chosen in the lottery, 1 in 366.
Scott Newell wrote:
At 03:56 PM 12/24/2009, J. Forster wrote:
That reminds me...one of the footnotes in Wolfram's A
Of course the diesel engine would have to have mechanical fuel
injection and could not use electrical glow plugs. Perhaps a
solid fuel could be used in the glow plug to get it running.
You couldn't use an electric starter, but I've hand-cranked lots
of engines. The four cylinder ones hold
Ah, but it is possible that all 14 could be off in the same
direction.
Sorry.
Bill Hawkins wrote:
Ah, but a man with 14 standards can use statistics!
Sorry.
Bill Hawkins
-Original Message-
From: Nic McLean
Sent: Monday, January 11, 2010 9:12 PM
Can I coin the phrase; A man that
side =)
Sent via BlackBerry by ATT
-Original Message-
From: Mike Naruta AA8K a...@comcast.net
Date: Mon, 11 Jan 2010 22:24:30
To: Discussion of precise time and frequency measurementtime-nuts@febo.com
Subject: Re: [time-nuts] I think I've become a Volt nut too.
Ah, but it is possible
Sure Chuck. What I was talking about was a part of statistics
that we in our gnat-hair-splitting compulsive group may forget
about.
Let's assume that our 100,000 standards were carefully
calibrated against THE standard. There is a small amount of
error in the calibration process. Let us
In Detroit, Michigan, when the auto manufacturing
companies discovered that having everyone's shift
starting at 8 AM caused huge traffic problems,
companies chose non-rounded times. For example,
one company starts their shift at 7:40 AM, another
starts at 7:25, and so on. This was done without
Have we no female time-nuts? Interesting.
On 12/13/2011 04:28 AM, Jim Palfreyman wrote:
Gentlemen, gentlemen and gentlemen!
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I'm confused. Is there a Linux version of
Lady Heather available? Or would I have to
run it on WINE?
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I created a spam filter for anything with 5680
so I don't see all those posts.
On 02/02/2012 08:57 AM, Rich (Buckeye) wrote:
I have only been a member of the time-nuts group for a short
while. It seems like 75% of the posts here have to do with the
I suspect that at time of death, brain activity
doesn't instantly cease, but decays.
Unless we would be able to monitor all brain
activity, we are stuck with a bald man paradox,
perhaps calculating the half-life of brain activity.
Maybe we could attempt to measure the weight of
the departing
I bought two TAPR ThunderBolts and on one of them
the serial port would quit communicating after a
while. There was no response to any command, only
removing the power and then restoring power would
get it talking again. My power supply was okay.
I opened the T-Bolt and inspected the solder
I'm using the TAPR HPSDR - LPU linear power supply
to power a pair of Thunderbolts. It has switching
for the -12VDC, but the +12 and +5 are linear.
I didn't use the included ATX or PowerPole connectors,
but wired direct. It runs fine from my 13.6 VDC
house battery.
Mike - AA8K
On
Have you ever tried humming while watching a propeller?
The strobe effect is fascinating.
My flight instructor thought that I was crazy until he tried it.
Mike - AA8K
On 11/29/2010 09:51 AM, jimlux wrote:
if one has a voltmeter (or total power detector, like your ear), hearing
low
Windows is interpreting your T-bolt as a mouse.
The T-bolt data is causing the jumping and selecting.
Unplug the T-bolt. Always boot without T-bolt connected.
Or
Add the following to your Boot.ini file.
The x stands for the COM port you are using.
NoSerialMice:COMx
(thanks to Joe Gray
Hah!
On 12/25/2010 12:22 PM, Eamon Skelton wrote:
On 24/12/10 17:00, Michael Poulos wrote:
What is your favorite watch?
This one gets my vote: http://leapsecond.com/pages/atomic-bill/
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Hmmm, sounds like the Microsoft model.
What did you expect for $100?
On 12/31/2010 12:49 PM, J. Forster wrote:
Well, I won't rant back at you, Dick, but your expectations are way off
base. GPS cartographers have to designate billions (yes, billions) of
addresses and the fact that they miss
That's odd. I just went to the TAPR.org web site and can still
seem to order an LPU kit for around $43 US.
I'm using a TAPR/OpenHPSDR LPU to run two Thunderbolts. The LPU
is operating on 13.6 volts off the house battery. The -12 volts
is switching, the other two voltages are linear.
I
Search the archive for the subject: Thunderbolt repair
and Thunderbolt quits.
Brian found a bad voltage on his power supply.
Perhaps your PC's power-saving feature?
Is your Microsoft Windows serial mouse feature disabled?
If it is not communicating at all, have you tried a different
baud
That's an interesting idea Jim.
What if the re-aggregating Ma Bell is about to
swallow T-Mobile in order to attempt control
of the mobile phone market. Ma needs to be
careful to not awaken the monopoly regulators.
Ah, Ma can point to new LightSquared as being a
competitor. Then, after
You can disable serial mouse detection:
http://www.taltech.com/support/entry/windows_2000_nt_serial_mice_and_missing_com_port
If you are using an old mouse, it might disable it as well and
you will need to use a USB mouse.
On 08/11/2015 08:20 AM, David C. Partridge wrote:
I just
I have seen something similar with one of my Trimble
Thunderbolts that I got through this group. After weeks of
operation, the serial port stops responding and a power-cycle
has it communicating again.
Firmware A002206.G1 Rev E
Running on OpenHPSDR LPU analog power supply that gets 13.6
On 02/13/2017 10:35 AM, Scott Stobbe wrote:
Hi Mike,
First of all, Wow what an interesting read, thanks for sharing
some of the history and your experiences with the 105. A second
thanks for uploading the manual, which I found to be a great
read, as with most old test & measurement product
I use the TAPR HPSDR LPU:
< https://www.tapr.org/kits_lpu.html >
I run two Trimble Thunderbolts on a LPU that uses the house 13.6
Volt supply that is backed up with two 6 Volt golf cart
batteries in series. I didn't bother installing the Anderson
Power Pole and ATX connectors, but wired
On 10/26/2016 11:59 AM, John Ackermann N8UR wrote:
I may have the opportunity to build a small "clock room" and am
considering whether I could make it an environmentally
controlled space. I'd like to learn about the options for doing
this.
The space would probably be 6x8 feet or so, in a
< http://onlinelibrary.wiley.com/doi/10.1002/2015SW001340/full >
from Space Weather, an AGU journal
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On 10/27/2016 03:41 AM, Poul-Henning Kamp wrote:
Over insulating is a 100% sure-fire way to get unstable temperature inside,
because it amplifies the consequences of any change in power dissipation.
It is a classic mistake to build a 100mm insulated enclosure inside an
office-like environment
On 12/07/2016 08:57 PM, Mark Sims wrote:
The files should wind up in your heather directory. Type in ? at the keyboard, scroll
down to the end of the command line help info and there should be a line that says
"put heather.cfg in directory " The actual directory depends upon the
For Windows 10, what is the file name for the Lady Heather dump
screen command? What folder is it in?
For the specified time (/nd=hh:mm:ss), is it GPS time or system
time?
I want to capture the precision survey plot without using
Windows Print Screen; my Lady Heather screen resolution is
On 06/19/2017 04:16 PM, Dave Mallery wrote:
hi
My Tbolt has been running for a long time, since the final group buy.
It is still running (indicated by the 10MHz output) but there is no data
coming out the serial port. LH says so and so does my lil TSIP monitor, as
well as my rs-232 cable
I notice that tomorrow CSPAN will have Richard Easton and Eric
Frazier discuss the history and evolution of the global
positioning system.
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Sure, Jeremy, just got back home.
My information is from Schedules Direct.
Saturday, Jun 03 2:00 PM EDST on C-Span 3
Global Positioning System History
Find Id 736848
Program Id SH02702989
It shows that it runs until 3:39 PM EDST, but other C-Span
programs I've recorded aired longer
My SDR-1000 showed substantially less "WWV drift" after adding
the PTC thermistor to the TCXO. Sorry, no measurements because
that was before I had a GPSDO.
Mikr - AA8K
On 06/04/2017 08:13 AM, jimlux wrote:
I recall some years ago folks were talking about putting a PTC
thermistor on the
He also did a six part documentary on PBS in 2014.
Great thinking.
On 09/04/2017 10:32 PM, Nick Sayer via time-nuts wrote:
I happened to be at Powell's bookstore in Portland the day after the eclipse
and came across this book and wound up buying it. It's attraction to me was the
same that
On 09/02/2017 02:57 PM, Clay Autery wrote:
Having decision-making problems for the materials for my GPS main
feedline. Going to use a TM LMR stock, just can't decide how big to go
with it...
26 dB 5vdc antenna on top of a 38 foot mast. Feed will come down the
inside/center of mast and exit
On 09/03/2017 06:02 PM, Bill Byrom wrote:
For precision timing measurements, I would think that there would be
concern about the double reflections of a badly mismatched low loss
transmission line (such as using 75 ohm line in a 50 ohm environment).
The re-reflected signal will act similar to
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