You can download a 30-day demo version of TimeView from the SpectraCom web
site.
On Wed, Dec 14, 2011 at 1:13 AM, gandal...@aol.com wrote:
Earlier this year I got a very good deal on an as new Tektronix FCA3100
Timer/Counter/Analyzer, which turned out to be a rebadged Pendulum CNT91.
Oh dear, what have I helped to get going :-) It has certainly been
interesting reading! My point was, as Chuck notes, that the metre, kilogram
etc. are no more 'precise' than a yard, pound etc. being, essentially,
arbitrary units and the 'imperial' units can be defined just as accurately
and in
On 12/14/2011 01:13 AM, gandal...@aol.com wrote:
Earlier this year I got a very good deal on an as new Tektronix FCA3100
Timer/Counter/Analyzer, which turned out to be a rebadged Pendulum CNT91.
Pendulum offers what looks to be some very nice software for this unit,
what it calls its
In a message dated 14/12/2011 09:34:35 GMT Standard Time,
azelio.bori...@screen.it writes:
You can download a 30-day demo version of TimeView from the SpectraCom web
site.
-
Thanks for the reply.
Tektronix, and no doubt Pendulum too, also offers a 30 day evaluation copy
and I
In a message dated 14/12/2011 09:45:33 GMT Standard Time,
mag...@rubidium.dyndns.org writes:
TimeLab should be able to work with it as the CNT91 supports TalkOnly
(and TimeLab only supports TalkOnly counters for generic types). I can't
use my CNT90 with TimeLab, as it doesn't have TalkOnly
Paul, a cricket pitch is 20 m. Sure when the curator draws the lines it is
12cm longer, (and I guarantee s/he uses a metric measure) but when we pace
it out for backyard cricket - its 20 m.
Also my American friends, all your imperial measurements are DEFINED in
terms of metric. eg your inch is
But it is 1 chain, (22 yards), surely? And you admitted that is not 20m when
laid out properly. The laws of cricket have not changed (even if they give a
metric equivalent) just because we might have joined the EU!! I have no
objection to using a metric measure to do it but you have to use a
In a message dated 14/12/2011 09:45:33 GMT Standard Time,
mag...@rubidium.dyndns.org writes:
TimeLab should be able to work with it as the CNT91 supports TalkOnly (and
TimeLab only supports TalkOnly counters for generic types). I can't use my
CNT90 with TimeLab, as it doesn't have TalkOnly
see also:
http://www.timeok.it/files/10_mhz_bandpass_filter.pdf
--
Luciano P. S. Paramithiotti
IZ5JHJ
- Original Message
From: Discussion of precise time and frequency measurement
time-nuts@febo.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Boy thats nice and simple. Shame I juts placed a order for parts could have
added a few 10.7 xformers to the order.
On Wed, Dec 14, 2011 at 9:55 AM, Timeok tim...@timeok.it wrote:
see also:
http://www.timeok.it/files/10_mhz_bandpass_filter.pdf
--
Luciano P. S. Paramithiotti
IZ5JHJ
Dave Martindale dave.martind...@gmail.com wrote:
But where the metric system has an advantage is that the units with
the same name are the same size everywhere; that's not true of
English units. I can remember mixing Kodak photographic chemicals
for darkroom use, where the mixing
Hal Murray wrote:
...
If you were an alien landing on Earth for the first time, which system would
make more sense to you?
Ah! A Godcentric view of the universe. Decimal is an arbitrary
number system that came about purely because we had 10 fingers, and
a brain that could only think of
El 14/12/2011 16:30, Chuck Harris escribió:
OBTW, as time nuts, we are steeped in the two units of measure that
are decidedly non-metric: seconds, and Hz. Think about it...
I find the second quite metric in the sense of powers of ten: we measure
seconds, milliseconds, nanoseconds... and
On 14 December 2011 01:13, Frederick Bray fwb...@mminternet.com wrote:
Anyone who is interested in buying these units should take a look at the
completed listings and be guided accordingly when making an offer. I
recently picked up a couple for ~ $35 each, including shipping. True the
price
Hi Stan
Unfortunately I can't answer your question, I'm having trouble enough with
my own:-), but I have got a copy of 0v979 so will forward that direct in
case you want to try it.
Regards
Niogel
GM8PZR
---
In a message dated 14/12/2011 14:57:08 GMT Standard
Paying duty on foreign purchases is always a crap shoot. Often you don't get
charged at all. Other times the item is held and you pony up the duty.
I got an item through Fedex and they came after me two years later for the
duty. I refused to pay because I couldn't even remember if I paid the
Yeah. UPS has a Customs Broker... staffed by 600 pound gorillas. They
succeeded in breaking my cast iron antenna base about 1/2 thick and
weighing over 40 pounds.
-John
===
Paying duty on foreign purchases is always a crap shoot. Often you don't
get charged at all. Other times the
Or the shipper didn't pack it well. UPS is very generous on insurance payments
IF the shipper doesn't have a history of issues. The stores that use the custom
foam scheme you see often on ebay were stores already nabbed by UPS for too
many damage claims.
As far as I know, the Customs House
Chuck Harris cfhar...@erols.com wrote:
Metric is purely arbitrary, as are all of the variants on the
English system.
They are not equally arbitrary. The metric system was constructed from the
size and rate of rotation of the Earth and the density of water, plus some
well-organized constant
yes, but 4 rods in the RSF system...
Reeves Paul
But it is 1 chain, (22 yards), surely? And you admitted that is not 20m
when
laid out properly. The laws of cricket have not changed (even if they
give a
metric equivalent) just because we might have joined the EU!! I have no
objection to
I told myself I would stop after my last posts, but I can't help it.
I do not pretend to know everything, but I am one of the relatively few in my
circle of friends with extensive experience with both systems, and after 26
years here, the imperial system has simply not made a case for itself as
Jim Palfreyman wrote:
Paul, a cricket pitch is 20 m. Sure when the curator draws the lines it is
12cm longer, (and I guarantee s/he uses a metric measure) but when we pace
it out for backyard cricket - its 20 m.
Also my American friends, all your imperial measurements are DEFINED in
terms of
I have been watching this thread and may have missed something. My
questions: What is the purpose of the outboard OCXO VECTRON 63.8976Mhz?
What model number does this RB most closely resemble?
--
Joe Leikhim
Leikhim and Associates
Communications Consultants
Oviedo, Florida
www.Leikhim.com
I would say that he has a gadzillion of the OCXO's, recognizes that the
frequency
is useless, and would rather give them away, generating a little synthetic good
will,
than scrap them.
-Chuck Harris
Joe Leikhim wrote:
I have been watching this thread and may have missed something. My
In a message dated 14/12/2011 19:46:56 GMT Standard Time,
jleik...@leikhim.com writes:
I have been watching this thread and may have missed something. My
questions: What is the purpose of the outboard OCXO VECTRON 63.8976Mhz?
What model number does this RB most closely resemble?
So the OCXO and the 9 pin RS232 are not actually connected to the PC
board? I am confused?
On 12/14/2011 2:53 PM, Chuck Harris wrote:
I would say that he has a gadzillion of the OCXO's, recognizes that
the frequency
is useless, and would rather give them away, generating a little
synthetic
In a message dated 14/12/2011 19:58:15 GMT Standard Time,
jleik...@leikhim.com writes:
So the OCXO and the 9 pin RS232 are not actually connected to the PC
board? I am confused?
--
Nope, just sitting on it for the sake of the photo, treat them as a freebie
or as scrap, either
On 12/14/2011 2:29 PM, shali...@gmail.com wrote:
Another small thing I miss is that a liter of water weighs a kg (under reference
conditions, I forgot what that was :). Then the specific weight of various materials only
has to be known by their density (ratio of specific weight compared to
I would he rather recycle them there than send them to me to fill up landfill
here.
On 12/14/11, Chuck Harriscfhar...@erols.com wrote:
I would say that he has a gadzillion of the OCXO's, recognizes that the
frequency
is useless, and would rather give them away, generating a little
no purpose at all. Just junk
As to the close match sorry don't know
On Wed, Dec 14, 2011 at 2:46 PM, Joe Leikhim jleik...@leikhim.com wrote:
I have been watching this thread and may have missed something. My
questions: What is the purpose of the outboard OCXO VECTRON 63.8976Mhz?
What model
On Wed, Dec 14, 2011 at 11:46 AM, Joe Leikhim jleik...@leikhim.com wrote:
I have been watching this thread and may have missed something. My
questions: What is the purpose of the outboard OCXO VECTRON 63.8976Mhz? What
model number does this RB most closely resemble?
I can understand one seller
Sure its one seller or his family. Notice the stratum of pricing and such.
What they are saving is the effort to remove the useless oscillator.
Most likely they get the board cut off already. Or could it be? The boards
cut that way because the gold fingers were pulled off for recovery.
Its all
Contrary to popular belief, most of us in the U.S. have heard of the metric
system and understand how it works. Personally, I agree that it is a
simpler and superior system.
But, English is the system we think in. We know that if a person is 300
lbs they need to lose weight, you need to drink 8
So the only item of interest is the Rb module itself?
Brings back memories of strange merchandise at Burnstein-Applebee.
On 12/14/2011 12:24 PM, paul swed wrote:
Sure its one seller or his family. Notice the stratum of pricing and such.
What they are saving is the effort to remove the useless
John,
No it isn't. Not even close to the world around.
From WP:
One fluid ounce is 1⁄16 of a U.S. pint, 1⁄32 of a U.S. quart, and 1⁄128 of
a U.S. gallon. The fluid ounce derives its name originally from being the
volume of one ounce avoirdupois
http://en.wikipedia.org/wiki/Avoirdupoisof water,
List;
OK, I need to measure the stability of a 10 MHz sine-wave source. After
reading a lot of background info on this list and some of the sources that
were referenced, I thought I could get away with a frequency measurement. I
now think I was wrong.
What I have is an Agilent 53230A counter (a
OK, it's right most folks (except for NASA, poke poke) do not have to
know the difference between a pound mass and a pound force, or
capacitance in ??? etc. The SI units are best for science because they
are all tied together with common ground. OTH, my grandmother's cookie
recipe only puts pounds
Good Lord, I thought he meant the cost of beer
Don
Jim Palfreyman
John,
No it isn't. Not even close to the world around.
From WP:
One fluid ounce is 1â16 of a U.S. pint, 1â32 of a U.S. quart, and
1â128 of
a U.S. gallon. The fluid ounce derives its name originally from being
the
Once you get the frequencies matched with a fraction of 1 Hz,
I would measure the phase between the 10 MHz source and the
10 MHz from the Trimble.
On 12/14/2011 12:29 PM, George Dubovsky wrote:
List;
OK, I need to measure the stability of a 10 MHz sine-wave source. After
reading a lot of
Hi George --
You can feed frequency data into Stable32, but the documentation doesn't
clearly explain that you need to scale the readings into fractional
frequency using the scaling function in the File/Open dialog. To get
fractional frequency, you divide the results by the nominal
heck yes and its pretty good deal from what the folks on the list say.
I just missed the $38 special with shipping
Regards
Paul
WB8TSL
On Wed, Dec 14, 2011 at 3:48 PM, Chuck Forsberg WA7KGX N2469R
c...@omen.comwrote:
So the only item of interest is the Rb module itself?
Brings back memories
Hi, gang,
What's the best way folks have found to remove the Ebay special 5680's
from the hunk of PC board they're rivited to on arrival?
On a related note: Any speculation on whether an SMA connector could be
added to accommodate the 10MHz output? I seem to recall the 5680's
I'd agree. If you google the frequency there is a lot of surplus out
there and unless
you building your own cell system I can't think of any use .. yet :-)
On Wed, Dec 14, 2011 at 11:53 AM, Chuck Harris cfhar...@erols.com wrote:
I would say that he has a gadzillion of the OCXO's, recognizes that
In a message dated 14/12/2011 21:41:13 GMT Standard Time,
kyr...@bluefeathertech.com writes:
What's the best way folks have found to remove the Ebay special 5680's
from the hunk of PC board they're rivited to on arrival?
Alan/Hex key, what look like rivets are screws :-)
These are small self-tapping hollow Allen screws. Find the right size
Allen L-shaped wrench and have at it...
Don
Bruce Lane
Hi, gang,
What's the best way folks have found to remove the Ebay special 5680's
from the hunk of PC board they're rivited to on arrival?
On a related
I just checked: it's a 1/16 in. hex wrench ( not metric.) They've been
driven in hard, don't give up...
Don
gandal...@aol.com
In a message dated 14/12/2011 21:41:13 GMT Standard Time,
kyr...@bluefeathertech.com writes:
What's the best way folks have found to remove the Ebay special 5680's
On 12/14/11 12:15 PM, Chris Albertson wrote:
On Wed, Dec 14, 2011 at 11:46 AM, Joe Leikhimjleik...@leikhim.com wrote:
I have been watching this thread and may have missed something. My
questions: What is the purpose of the outboard OCXO VECTRON 63.8976Mhz? What
model number does this RB most
I have the Fluke PM6681: it has no talk-only function on the GPIB port. If
the CNT81 has the same software then TimeLab can't get data from the
CNT81/PM6681. Anyway I can write a logging software (for free, of course)
to grab data so that you can post-process it with whatever you want (I use
I'm begin getting curious... having already received that OCXO, and with
a 2nd unit arriving... I've googled the frequency and there are about a
zillion cristals and oscillators for that frequency from a ton of
different manufacturers, and seems that the frequency is patented: US
patent
On 12/14/11 12:59 PM, Jim Palfreyman wrote:
A cubic metre holds 1000 litres (exactly) and a 10x10x10 cm container holds
a litre (exactly). A litre of water weighs 1kg, A ml of water weight 1
gram. (Fantastic for cooking btw - use digital scales, put your bowl on
them, zero it and add, say, 250g
Could be but as a timenut not real magical to me either.
Regards
Paul
On Wed, Dec 14, 2011 at 5:06 PM, Javier Herrero jherr...@hvsistemas.eswrote:
I'm begin getting curious... having already received that OCXO, and with a
2nd unit arriving... I've googled the frequency and there are about a
On 12/14/11 12:44 PM, Justin Pinnix wrote:
Contrary to popular belief, most of us in the U.S. have heard of the metric
system and understand how it works. Personally, I agree that it is a
simpler and superior system.
But, English is the system we think in. We know that if a person is 300
lbs
The 63.8976MHz frequency seems to be related to the OFDM frame of the WiMAX
standard that has a window of 62400 bytes and the 63.8976MHz can time WiMAX
BaseStations with only powers-of-2 dividers.
On Wed, Dec 14, 2011 at 11:24 PM, paul swed paulsw...@gmail.com wrote:
Could be but as a timenut
I don't think the strange oscillator is part of the Rb board.
I have a full board from a purchase a number of years back. There are no
gold fingers; it has a big square multi-pin connector. The board is 20
inches long and has only a few interfacing chips on it and a LED. I'd
say the board is
Does anybody have extra, or have a source for, the jewel cases for storing
PCMCIA cards? I could use 2-5.
Thanks,
-John
==
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
I use to have a reference to frequencies used by the different cell
systems. That's my
call .. and I can't think of another industry that just like the
Thunderbolts that when it
does a refresh or a fix from a design oh-shit dumps so many of the same thing.
I just read US Patent 6,282,184 Common
Hi,
I can think of at least one excellent use for the unwanted 63.8976MHz OCXO
that comes free with some of the recently offered FE-5680A units.
It would make a great reference for a DDS synthesizer, such as an
AD9852/AD9854. These chips have a 4x reference multiplier capability, and
thus would
Not so many cases, But i have all sorts of PCMCIA cards, tried selling them
on ebay a while ago but they are not worth anything.
Modem, Lan, Wifi, Serial, some flash. etc. If someone is looking for a card
contact me off list. You won't be the price (free + shipping)
I probably have 500, maybe
I didn't feel like digging for an allen key so I just drilled from the back
side of the board. I didn't go all the way through. It was just enough to
remove the nut or anchor that was attached to the PCB. It took about 1
minute.
-Bob
On Wed, Dec 14, 2011 at 2:48 PM, Don Latham
Looks to me like 63.8976mhz (63,897,600hz) is divisible by two. Using a
counter to make a clock distribution system etc. With that in mind i could
use this in all sorts of projects.
Steve
On Wed, Dec 14, 2011 at 7:02 PM, Pete Lancashire p...@petelancashire.comwrote:
I use to have a reference
On Wed, Dec 14, 2011 at 4:34 PM, Rex r...@sonic.net wrote:
I don't think the strange oscillator is part of the Rb board.
That's correct. The OCXO is a brand new part that is thrown in and has
nothing to do with the board the Rb is on. Same for the DE-9 connector. I
can use the connector
The only PCMCIA cards I've found useful are soundcards and Socketcom serial
cards.
Some program that decode scanner demod taps use the 8 bit mode found in older
style sound standards that are missing in intel high def.
Some Socketcom serial cards work in DOS.
-Original Message-
It's exactly 52 times the 1.2288MHz reference that IS95/CDMA2K uses -
this may be a coincidence, but I somehow doubt it.
Regards,
Pete
On Thu, Dec 15, 2011 at 3:46 AM, Joe Leikhim jleik...@leikhim.com wrote:
I have been watching this thread and may have missed something. My
questions: What
On 12/14/2011 5:20 PM, Steve . wrote:
Looks to me like 63.8976mhz (63,897,600hz) is divisible by two. Using a
counter to make a clock distribution system etc. With that in mind i could
use this in all sorts of projects.
Steve
Hmm... 63897600 = 0x3CF. Pretty clean hex number with those
OK..here's a question I never found a solid answer to:
On the HP-8656A signal generators, one of the amplitude scale buttons is in
dBf.
dB relative to a femptowatt. (ie: -120dBm)
What drove that requirement? I have yet to see a later vintage sig gen use
that scale.
-Brian,
Hi Pete:
Maybe you can shed some light on the common xtal frequencies table where
there's no explanation given?
http://www.prc68.com/I/pdf/Crystal_Freq.pdf
An answer is not it's an even frequency or it's an even binary frequency. That's true for most of these and the
factors are part of the
If the banks here or anywhere should start to fail in the next 6 months or so
it is beneficial to know that a Krugerrand is an ounce of gold which should buy
more than enough food for a month for a family, and that an MOA is a little
more than an inch at 100 yards (or 93 some odd meters if you
Brooke,
14.31818 is 4x the analog color burst (~3.58)
18.432 divides cleanly for baud rates. I've used it as a PIC clock for
that. I think some of the others may be too, but I didn't recognize or
do the math to see.
On 12/14/2011 7:13 PM, Brooke Clarke wrote:
Hi Pete:
Maybe you can
Hi Rex:
Thanks, I had 14.7456 mis listed (off one row) as the 4X CB freq. I've updated
the table.
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/Brooke4Congress.html
Rex wrote:
Brooke,
14.31818 is 4x the analog color burst (~3.58)
18.432 divides
11.0592MHz is another crystal used for accurate baud rates -
especially on MCUs that had a 12MHz maximum clock (like the Intel
8051)
So is 9.8304MHz - used on a number of Mototola (now Freescale) MCUs
17.734475 is 4 times the PAL color burst frequency of 4.433619MHz
I'll see if I can think of
Ah, and I just noticed that you had the H-Maser and Rb marked wrong
On Thu, Dec 15, 2011 at 12:17 PM, Peter Bell bell.pe...@gmail.com wrote:
11.0592MHz is another crystal used for accurate baud rates -
especially on MCUs that had a 12MHz maximum clock (like the Intel
8051)
So is 9.8304MHz -
On Wed, Dec 14, 2011 at 5:20 PM, Steve . iteratio...@gmail.com wrote:
Looks to me like 63.8976mhz (63,897,600hz) is divisible by two. Using a
counter to make a clock distribution system etc. With that in mind i could
use this in all sorts of projects.
The prime factors are 13, 3, 2, 2, 2, and
If memory serves me correct that unit of measure was chosen by the Institute
for
High Fidelity (IHF) roughly 40 years ago as the unit to rate FM tuner
sensitivity. The dBf unit was to replace the more common (at the time)
microvolt
since the dBf was a true power measument in positive whole
albertson.ch...@gmail.com said:
The prime factors are 13, 3, 2, 2, 2, and lots more 2s
There are also a couple of 5s in there.
[~]$ factor 63897600
63897600: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 5 5 13
There really is no reason to clock a DDS with a nice even number frequency.
OK the even
Yup. Nice binary number. jut like those old school crystals we like to see
(4.096, 8.192...etc) dare i mention 32.768 khz... ouch ;)
Steve
On Wed, Dec 14, 2011 at 10:03 PM, Rex r...@sonic.net wrote:
On 12/14/2011 5:20 PM, Steve . wrote:
Looks to me like 63.8976mhz (63,897,600hz) is
A lot of them are derivatives of the 2.4576 UART baud rate gen:
9.8304 = 2.4576 * 4
14.7456 = 2.4576 * 6
19.6608 = 2.4576 * 8
22.1184 = 2.4576 * 9
24.567 = 2.4576 * 10
That is the reason why I've used some of them (14.7456MHz and
19.6608MHz) for clocking the HC11 variants with 4 and
adding to the sub ordinate: 32.768khz is a common resonator / crystal
frequency for Real Time Clocks. Note this is not time-nut RTC
My general rule of thumb is that anything that will cleanly divide by 2 (a
binary number) can be use for time applications with little or no work in
either hardware
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