I am pretty sure good old Visual Basic Pro version 6.0 (and newer) supports to
115kb.
GW Basic officially makes you a dinosaur...
Didier KO4BB
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-Original Message-
From: cdel...@juno.com
To: time-nuts@febo.com
Sent: Tue, 09 Oct 2012
Most computers and RS-232 interface chips made in the last 10 years support
0-5V as well as +/- 12V.
Didier KO4BB
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-Original Message-
From: Bob Camp li...@rtty.us
To: 'Discussion of precise time and frequency measurement'
It's on my web site, look for the GPIB page under Test Equipment.
www.ko4bb.com
Didier KO4BB
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-Original Message-
From: Joseph Gray jg...@zianet.com
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Sun,
Actually they were Digikey part numbers...
Didier KO4BB
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-Original Message-
From: Joseph Gray jg...@zianet.com
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Sun, 14 Oct 2012 7:00 PM
Subject:
Hi TJ,
The Jupiter receivers I have are the standard part, and like you I have found
detailed design info hard to come by.
All I can suggest for your issue is to use a small microcontroller to send the
commands to the receiver at power up, then go to sleep until the next power
cycle.
I have
Charismatic impedance, he?
Was that with one wire for data and the two neighboring wires as ground?
Didier KO4BB
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-Original Message-
From: Bob Camp li...@rtty.us
To: Discussion of precise time and frequency measurement
I already have a number of time-nuts related wiki pages on my site, anybody is
welcome to start a new one. It is open to anyone.
Didier KO4BB
www.ko4bb.com
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-Original Message-
From: David J Taylor david-tay...@blueyonder.co.uk
To:
It is easy to add a JTAG programming header to the TBolt display sold by
fluke.l and others that are based on my design. The software is already written
for the TBolt, the code is open source (in C), somewhat documented and
available, the tools are free and the JTAG adapter is only $20.
The
If you cannot see the horizon because of obstructions (what else?), these
obstructions are likely to be a source of multipath. So while technically you
do not need to see the horizon, any obstruction above the horizon could cause
problems. Of course, distant trees or a hill are less likely to
Speaking of which, the 5071A service manual is on my web site, a kind gift
from a list member who sent me an actual high quality paper copy. The
Programming Manual is being scanned but I will be out of town next week, so
it will probably be another week before it's finished and uploaded.
No need to encrypt your emails, it makes them hard to read on some devices
Sent from my Droid Razr 4G LTE wireless tracker.
-Original Message-
From: Volker Esper ail...@t-online.de
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Fri, 02 Nov 2012 8:47
That sounds odd, as most radios take tens of millisecond, if not hundreds to
switch from transmit to receive and back in any mode other than break-in CW.
Further JT65 is used with propagation modes that typically do not have a stable
or predictable propagation time like moonbounce or meteor
I have a working EIP 371 that is surplus to my needs. It has the interesting
source locking feature (described on my web site)
Didier KO4BB
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-Original Message-
From: Lizeth Norman normanliz...@gmail.com
To: time-nuts@febo.com
Sent: Sat,
This kind of discussion comes up regularly, so I wrote this age:
http://ko4bb.com/Test_Equipment/CoaxCableMatching.php
Didier KO4BB
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-Original Message-
From: M. Simon msimon6...@yahoo.com
To: time-nuts@febo.com time-nuts@febo.com
Sent:
Said, in the text I indicated the source was not a 50 ohm terminated signal
generator, but the 1 pps output of a Thunderbolt with about 5 ohm impedance,
hence the ringing.
Didier
Sent from my Droid Razr 4G LTE wireless tracker.
-Original Message-
From: Said Jackson saidj...@aol.com
Said,
I agree. I intended to complete the page by doing more tests, but the
interesting point of the demonstration is that it is sufficient to match the
cable at the far end, and in doing so, you preserve the full amplitude of the
pulse. If you put 45 ohms in series and terminate in 50 ohms at
Said, I agree with all you say. My web page does not intend to show what is
best, simply what is. Many people are puzzled by the issues of line impedance.
Best practices have been discussed at length on this list, but always
theoretically. I thought a few scope pictures and explanations would
I am not sure that a precision clock will help if the cpu is busy and skips
clock cycles. I believe this is one of the problems with general purpose OSes
like Windows.
I believe the better boards like the Soekis use hardware dividers to alleviate
the cpu busy problem.
Didier
Sent from my
Well, I hope they made it worth your while!
Congrats!
Didier
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-Original Message-
From: John Miles jmi...@pop.net
To: 'Discussion of precise time and frequency measurement' time-nuts@febo.com
Sent: Sun, 02 Dec 2012 11:33 PM
Subject: Re:
Good practice with a spectrum analyzer is to put a 20 dB pad at the input all
the time unless you are sure you don't need it for a particular measurement.
It has saved my bacon many times.
It also protects the input connector from excessive wear.
Didier KO4BB
Sent from my Droid Razr 4G LTE
Then the next best thing is a time-delay relay set for a delay sufficient to
ensure the OCXO has warmed up.
Didier
Sent from my Droid Razr 4G LTE wireless tracker.
-Original Message-
From: Joseph Gray jg...@zianet.com
To: Discussion of precise time and frequency measurement
If they don't get close, which is right?
If you only have 2 references, you cannot tell which is right.
Didier KO4BB
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-Original Message-
From: li...@lazygranch.com
To: Discussion of precise time and frequency measurement
Is shipped, tracking number
1Z30VR960337713831
due Wednesday
Didier
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___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and
One more thing the Thunderbolt is essentially immune from since there is no
separate XO for the GPS receiver which runs from the OCXO.
Didier
Sent from my Droid Razr 4G LTE wireless tracker.
-Original Message-
From: Said Jackson saidj...@aol.com
To: Discussion of precise time and
Forced air will generally be turbulent, which means that the air speed and
pressure at any point will follow a somewhat normal (or not) random
distribution. That is not good for something that needs stable cooling. Air
flow resulting from convection cooling on the other hand is usually laminar,
OCXO not, but the little XO that drives the GPS, that you can be sure of it.
Didier
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-Original Message-
From: Bob Camp li...@rtty.us
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Sun, 16 Dec 2012 8:08
I was too lazy to look them up, linking the miles.io web site was simpler :)
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-Original Message-
From: Rex r...@sonic.net
To: time-nuts@febo.com
Sent: Wed, 19 Dec 2012 4:27 PM
Subject: Re: [time-nuts] Is now the timepod a symmetricom
As long as you don't have to change the 12AU7, you are OK :)
Didier KO4BB
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-Original Message-
From: paul swed paulsw...@gmail.com
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Fri, 21 Dec 2012 11:18 AM
I have used a commercial stack for 8 bit microcontrollers (Micronet CMX) and as
is, it would be a bad choice for timing because of the time it spends
processing packets before deciding if they are for itself or not. It could be
modified but you need a developer license to get the source code,
I have had that problem more than once. Missing Vcc on a chip but the thing
runs, just not necessarily well enough, or well enough to go through the next
level of test.
I have also used it when adding an inverter somewhere on a clock line, and a
decoupling cap on the inverter's Vcc is enough
Joe,
It just so happen I have a never used USB-printer port adapter (with the
Centronics connector). There is no driver for it, I believe the driver comes
with Windows.
You are welcome to it.
Didier
Sent from my Droid Razr 4G LTE wireless tracker.
-Original Message-
From: J. L.
10.059 used to be a standard frequency for some 8051 microcontrollers. Should
not be too hard to find.
Didier
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-Original Message-
From: Ed Breya e...@telight.com
To: time-nuts@febo.com
Sent: Thu, 17 Jan 2013 7:11 PM
Subject: Re:
Have you checked my page?
Http://www.ko4bb.com/Timing/GPSMonitor
The Toolstick is readily available
Didier KO4BB
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-Original Message-
From: Major L. McGee III maj...@sc.rr.com
To: time-nuts@febo.com
Sent: Wed, 23 Jan 2013 10:32 AM
It seems like it would be very tight in a single plug-in, if it even fits. A
dual PI would certainly work though.
Also, as someone pointed out, the TM-500 series may not have the power and
cooling available. I have. TM-5006 chassis that would certainly do the job in
both regards, but that's
Robert is obviously correct, however you would be very hard pressed to be able
to measure the difference between shoulder screws and regular screws in
practice, either through insertion loss, VSWR or power handling.
So much so that I have never seen shoulder screws used on rectangular
See http;//www.ko4bb.com/Test_Equipment/Thunderbolt/PulseStreching/
Didier KO4BB
Sent from my Verizon Wireless BlackBerry
-Original Message-
From: Arthur Dent golgarfrinc...@yahoo.com
Sender: time-nuts-boun...@febo.com
Date: Sun, 26 Sep 2010 05:07:50
To: time-nuts@febo.com
Reply-To:
Last time I checked, the HP/Symmetricom HP58532A GPS antenna was cheaper than a
GPS splitter (I paid $50 for my HP58532A, with shipping, and it was brand new).
Of course, with two antennas, you will need two feed lines which, depending how
long they are, could cost you more than the antenna
The BFO is (are, one for USB and one for LSBY the only oscillator that is not
phase locked to the HP10811 inside, and that can be remedied, so it is not
hopeless.
Didier
Sent from my Verizon Wireless BlackBerry
-Original Message-
From: J. Forster j...@quik.com
Sender:
There's the minor issue of getting the power company to put in a cable to the
house for your 1 Mw (capital M not lower case M) transmitter.
I can't resist citing a personal anecdote regarding power distribution.
A few years back, I was working on a proposal for a high power (1MW) power
supply
That is basically the sauce behind GPS. What is the power of the transmitters
on the satellites? It can't be much, and the signal on the ground is quite a
bit below the noise floor before correlation.
Didier
Sent from my Verizon Wireless BlackBerry
-Original Message-
From: Poul-Henning
Not necessarily, on 3 phase systems, you would have to be creative to get below
.9
You can easily get to .95 with a simple multipulse rectification. Beyond that,
other than regulatory compliance, you do not gain much efficiency.
I can't imagine these systems running on anything other than 3
I visited Pleumeur Baudou shortly after it opened, my father was an engineer
with the French Telecom ministry (PTT at the time) and he knew people there. I
remember the gigantic offset horn and the maser amplifier. Too bad I do not
have pictures from this event.
Didier
Sent from my Verizon
Ok, you beat me to it, thanks!
Didier
Sent from my Verizon Wireless BlackBerry
-Original Message-
From: WB6BNQ wb6...@cox.net
Sender: time-nuts-boun...@febo.com
Date: Tue, 12 Oct 2010 13:11:46
To: Discussion of precise time and frequency measurementtime-nuts@febo.com
Reply-To:
Of course, that's the whole point of the web site :)
Didier
Sent from my Verizon Wireless BlackBerry
-Original Message-
From: paul swed paulsw...@gmail.com
Sender: time-nuts-boun...@febo.com
Date: Tue, 12 Oct 2010 09:31:05
To: Discussion of precise time and frequency
Good point, but still a whole lot better than a blank face with paint chips at
the bottom :)
Didier
Sent from my Verizon Wireless BlackBerry
-Original Message-
From: gsteinb...@aol.com
Sender: time-nuts-boun...@febo.com
Date: Tue, 12 Oct 2010 11:11:09
To: time-nuts@febo.com
Reply-To:
Well, I suffer not only from dislexia, but also blurred vision. It's a 4800A
The meters look the same as the 4805A though.
To my defense, my cardiologist told me last week that my good cholesterol was
too low and he recommended that I drink a glass of red wire with dinner every
day to raise it
I think that's what Jim is saying. If you try to fit to the signal using only
the zero crossing, it will be hard unless you have a lot of zero crossing,
because you will have only one point per period to fit to. If you fit 10 or 100
points per period, you improve your fitting considerably. That
I saw this just before leaving home and I must admit I posted it before reading
it...
But by now everyone knows what the problem was!
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: Bill Hawkins b...@iaxs.net
Sender:
Rick,
Thanks for the comments on Eagle.
I have been frustrated trying to learn Eagle for a small urgent project
recently. I ended up using ExpressPCB and the attendant schematic capture.
While it uses proprietary file format and is therefore locked to one vendor, it
was surprisingly easy to
Said,
I can give you C code for a Silabs 8051 driving an I2C RTC in bit-banging mode
(works with ANY chip)
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: saidj...@aol.com
Sender: time-nuts-boun...@febo.com
Date: Tue, 28 Feb
I shipped my Loran receiver to the south hemisphere a couple of months ago for
the cost of shipping, not sure if it ever made it.
I suppose no news is good news?
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: paul swed
I have two 5370A and both run about the same temperature.
It is high, but the heatink only supports a few power bipolar transistors used
in the power supply that are designed to run hot.
Other than the inconvenience of having blisters if you touch the heatsink, I
would not worry about it. Its
If you have a small canned VCXO, thermal performance will not be as good as an
OCXO like the HP10811, so the optimum time constant of the filter will not be
very long, and the analog solution is more practical.
You may want to look at the James Miller design. He uses a Jupiter GPS receiver
Poul-Henning,
Do you need 16 bits or can you get by with a 12 bit ADC?
Have you considered using an FPGA for signal processing? It seems you need a
fairly serious CPU to handle that much data.
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original
Patent Pending only means that if you copy the design and sell it, some time
in the future (if and when the patent is granted), you may have to stop. You
will not have to buy back your products or pay anything or be required to
license for past use once the patent is granted as long as you stop
I was not concerned about processing power on a PC (or Mac for that matter) but
for the uC that was used in PHK's project.
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: Chris Albertson albertson.ch...@gmail.com
Sender:
Do not forget that BlackBox sold Converters and Controllers that are identical
internally to the IOTech boxes.
The EPROMs can also be swapped between these two.
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: J. L. Trantham
SRS620 schematics are on ko4bb.com
Didier KO4BB
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-Original Message-
From: John Ackermann N8UR j...@febo.com
Sender: time-nuts-boun...@febo.com
Date: Fri, 23 Mar 2012 14:46:07
To: j...@quikus.com; Discussion of precise
I have often seen (don't ask me how) silicon diodes getting so hot that they
unsolder themselves from the board and fall at the bottom of the equipment
enclosure, yet they work fine after the fact even though they don't look so
good.
I have been tempted to solder them back in in more than one
I agree and it is unfortunate, because of all the email accounts I have (and
that's quite a few), I like their web mail client the best.
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: Attila Kinali att...@kinali.ch
Sender:
Hi Chuck,
Mine is not dead, just hard of hearing...
Once I realized that, I set it aside and I have not used it in years.
I got it with a red box Thunderbolt I bought from a lit member a long time ago.
It has some obvious signs of experience being outside. It is possible that
moisture got
The elevation angle filter is based on the satellite position, not the actual
direction the signals come from.
If you have reflections and multipath, but the satellite is otherwise high in
the sky, you are out of luck regardless of elevation angle filter.
Of course, the higher the sat, the
If the satellite is above the mask, the signal will be used in computing a
solution even if it got in through reflexions and multipath. That's why a good
antenna with choke rings is desirable.
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original
An older laptop (Pentium M for instance) can be had for $80 or so any day of
the week, won't take much space, is completely standalone (built-in keyboard
and display, built-in battery backup) and sips power when idle, which it will
be most of the time.
The only issue is that you might be
When you install the Altera tools, it automatically installs NIOS and gcc. I
assume there are no restrictions for private use, but you may have to send $ if
you make a commercial product. That remains to be checked.
I have not used NIOS either.
Didier KO4BB
Sent from my BlackBerry Wireless
I have updated my GPSMonitor firmware project.
Version 0.3.3 released last year allowed to display local time, by applying the
time zone offset and the GPS offset (15 seconds at the time). However, GPS
offset was hard coded, so it would require a reflash after a leap second.
Version 0.3.4
Michael,
There is a very effective fix: move!
:)
I live in NW Florida and I believe I have found a good solution to the
lightning problem.
Since lightning never strikes the same place twice (or so goes conventional
wisdom), I built my 60' antenna tower a few feet from the exact spot where a
I agree that memory depth is an under appreciated parameter, but even 2,500
points like what's available on the cheap Tek scopes is quite useful.
On the other hand, I had a few LeCroy with 50k deep memories and there are
cases where that is very useful too. I can't imagine real life use cases
Must be the reason behind the puzzling menus of Microsoft Office 2007 and up...
Everything requires one or two more clicks than the 2003 vintage.
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: Scott McGrath scmcgr...@gmail.com
True, the LeCroy I have has +/- trigger, which is sometimes invaluable and very
hard to emulate if your scope does not have that feature.
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: Tom Knox act...@hotmail.com
Date: Tue, 17
That's why the default mode for a DSO should always be pulse detect or
whatever the manufacturer calls it, unless you know what you are doing. As far
as I know, all DSOs have this or an equivalent mode where the ADC runs at full
speed regardless of sweep speed, and the min and max readings
One issue with X-Y mode on analog scopes is the different bandwidth of the two
signal paths. Do not expect to have amplitude or phase fidelity within the
vertical bandwidth. 1/10th of it is probably the best you can hope for.
In that regard, DSOs with all their quirks are more symmetrical since
A non-sampling oscilloscope with limited bandwidth could just as easily
miss a narrow pulse because of bandwidth constraints no matter how
high its sampling rate.
That is the point of the thread. Even a wide bandwidth analog scope used to
show a 500nS pulse at a 200Hz repetition rate will have a
I have not studied CPLDs but Actel has the only true Flash based FPGAs. The
flash cells directly control the FPGA fabric. As such, they are mostly immune
to Single Event Upset that plagues just about any other FPGA technology, and
there is no configuration step at power up.
Didier KO4BB
Sent
By the way, Actel is now part of Microsemi, with all that it entails.
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: Jim Lux jim...@earthlink.net
Sender: time-nuts-boun...@febo.com
Date: Sat, 28 Apr 2012 14:19:40
To:
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:
I have noticed that it tends to lag when you stay on the page a while.
I am sure that is just a matter of a simple adjustment...
Thanks for the link :)
Didier KO4BB
--Original Message--
From: Rob Kimberley
Sender: time-nuts-boun...@febo.com
To: Time-Nuts
ReplyTo: Time-Nuts
Subject:
The best way is to buy a rechargeable cell pack for cordless phones. These are
typically made with 3 small NiCad so that they don't mind trickle charging and
are already safely packaged in shrink tubing with two leads and a connector.
When the local Lowe's went out of the phone distribution
I have two HP 8116A function generators of widely different manufacturing date
and different processor board. Both have a NiCad for memory backup.
On the old one, the battery was completely gone and so were many of the traces
on the PWB.
After all was repaired and the battery replaced with a
It could not be any good if it were any cheaper!
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: Jim Palfreyman jim77...@gmail.com
Sender: time-nuts-boun...@febo.com
Date: Mon, 7 May 2012 12:39:48
To: Discussion of precise time
The brain uses phase at low frequency and amplitude at higher frequencies to
find the direction a signal is coming from. It works better for low frequencies
than high when you have a steady tone, but high frequency positioning is better
when the signal is pulsed.
It is almost impossible to
Breathing and heart beat are filtered out and corrected for by the brain,
otherwise we would have difficulties to hear a lot of things.
Interestingly, that works well in our natural environment, but not as well when
you are somewhere else.
When free diving (when there is no noisy scuba gear and
Yes, I moved them yesterday
Didier KO4BB
--Original Message--
From: Mark Sims
Sender: time-nuts-boun...@febo.com
To: Time-Nuts
ReplyTo: Time-Nuts
Subject: [time-nuts] Trimble Resolution SMT - good/bad/indifferent?
Sent: May 10, 2012 11:02 PM
Why in the hell would anybody build a 50
And why would one not want to have 0.7m horizontal accuracy while moving at
100s of knots?
You probably need a lot better than that when you fly a SAR on a jet like the
GlobalHawk.
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
The -12V is only used to support the RS-232 driver. The CPU should be running
and you should have discipline even without the -12V
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: J. L. Trantham jlt...@att.net
Sender:
Ooops, thanks for the correction...
Then I assume that if the voltage is too low for the negative reference
headroom, severe stability problems could result.
Didier KO4BB
--Original Message--
From: Mark Sims
Sender: time-nuts-boun...@febo.com
To: Time-Nuts
ReplyTo: Time-Nuts
Subject:
A 74AC74 in SO-14 package mounted dead bug style will make a handy /4 that is
no bigger than most crystal oscillators.
If that's still too big, you can go with the TSSOP, but no coffee for you for a
week prior to soldering that baby :)
Didier KO4BB
Sent from my BlackBerry Wireless thingy
The narrow pulses are easily filtered by the power supply because the frequency
distribution of the power consumption has a much smaller component at 1Hz.
At 1Hz, the power supply filters nothing.
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original
The Thunderbolt's output impedance is much less than 10 ohms. However, it is
only necessary to filter the end of the line for a clean pulse.
See http://www.ko4bb.com/Test_Equipment/CoaxCableMatching.php
I used the Thunderbolt's PPS output as a source in those measurements.
Didier KO4BB
Sent
The issue is that the overall power drawn at 1Hz can cause stability problems
for all the power supplies, so in the example given by Tom, the power
modulation probably affected the power supplies regulation and it affected the
next pulse, not the first pulse. Since it is continuous pulse train,
Mike, here is the effect of the A/C cycling on and off during a warm spring day
on the delay through a piece of RG-8 cable maybe 3 feet long:
http://www.ko4bb.com/Test_Equipment/data/HP10811-raw.png
The full scale (screen height) is about 5x10 to the -10, the length of the
record was about one
Absolutely, that's what the pictures I linked to earlier show, particularly the
last one. It is sufficient to properly terminate one end to eliminate ringing,
as long as you have no tees in line. There may be specific reasons why it is
preferable to terminate one end rather than the other, like
It would be very easy to use a constant current to drive the LED and simply
short it periodically to provide the blinking without supply current
variations. You would still have short transients in the drive circuit, but
these should be much easier to filter.
Didier KO4BB
Sent from my
As a driver, you can look at the RS-485 drivers. Some have very temperature
stable and well controlled delays in the 10nS range, and they can drive
relatively low impedances. I do not have the P/N on hand, but if you can't find
one, let me know and I'll send you the P/N from home.
Didier
It would be nice to put the known infromation on the GPSTM boards on a
webpage so that newcomers do not have to start from the beginning.
You are welcome to use my wiki like for the FE5680 Rubidium oscillator by John
Beale:
http://www.ko4bb.com/dokuwiki/doku.php?id=precision_timing:fe5680a_faq
If you can offset one enough to have the output from the dbm in the audio band,
you could use a sound card based spectrum analyzer to evaluate phase noise.
Some sound cards may work down to 10 Hz, but their performance there is usually
not specified. Bruce Griffiths has information on some high
Yes, but you have to do this every 19.2 years and pretty soon it becomes a
chore...
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: Azelio Boriani azelio.bori...@screen.it
Sender: time-nuts-boun...@febo.com
Date: Fri, 8 Jun 2012
I second that.
I normally keep the GPS on my phone turned off to save battery life, but when I
turn it on to use the map service for instance, I get a fix in as fast as a
couple of seconds. That makes it much more convenient than my Tom-Tom car GPS
and keeping the phone's GPS turned off unless
Acrually the PPS output has very low impedance, so you can probably load it
with 5 instruments, each with 50 termination.
Not so for the 10MHz though
Didier KO4BB
Sent from my BlackBerry Wireless thingy while I do other things...
-Original Message-
From: David C. Partridge
Sorry for the triplicate message before, it looks like my new shiny phone
is sending messages before I am finished...
The 3586 is a very nice machine. Make sure you have Option 003 if you get
an A or a B and you intend to use it for voice or digital data that
requires 3kHz bandwidth.
I
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