In message
,
Mark Sims writes:
>The effects of things like antenna position changing a couple of cm due to
>expansion and humidity effects are swamped by the receiver accuracy and noise.
Short term: Yes. Long term: No.
--
Poul-Henning Kamp | UNIX since Zilog Zeus
me) and with only a single receiver the amount of input data is too
low for such a crude algorithm.
A more complex geometrical model could probably get more mileage
out of the sparse data, as would tracking more birds than the
12 the M12 could track.
--
Poul-Henning Kamp | UNIX since Zilog Zeus
follow the procedure in the manual *exactly*.
PS: I do not recall it being mentioned, but the 1 MOhm input pods
are horribly unstable compared to the 50 Ohm input pods, which are
basically just a stripline and a BNC connector.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freeb
In message <59219f88-52bb-d127-29de-1ea0ccc2b...@febo.com>, John Ackermann N8UR
writes:
>It's much better to have one thoughtful post than a dozen written on the fly.
See also:
http://bikeshed.org
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@fr
oth and plot the result.
If you get ugly spikes at the turning points of the "hanging bridges"
you're doing it wrong.
For the UT Oncore etc. it is predictive of the next 1PPS flank.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
ping factory new
CS-tubes *from* their factory, but not for shipping new or used
tubes *to* their factory, because customers could not be trusted
to pack according to spec.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD commit
If want to exploit what the 5372A can do in FMT-context, you should
feed it the amplified and band-pass filtered RF (rather than some
down-converted and otherwise mangled version of the signal) and
capture timing of the actual zero-crossings and post-process that.
--
Poul-Henning Kamp
ld be in full swing,
and it was impossible to tell them apart, except for the
tongueless and magical octiron bell of Old Tom in the Unseen
University clock tower, whose twelve measured silences
temporarily overruled the din.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebs
, see for instance from 03:35:
https://archive.org/details/59554KrystallosCF
But it is clearly beyond what I have time to persue.
Do we know anybody in the quartz business who needs a really cool
research project ?
Poul-Henning
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p
phase noise nor jitter matters,
it is certainly feasible to measure the tempco of the X-tal at the
factory and let a micro-power computer use temperature measurements
to model the "perfect" frequency and phase.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org
In message <8bcc9dcc-fa97-b531-d658-2051c094c...@bluefeathertech.com>, Bruce
Lane writes:
> Heh... So much for Google's favorite "Don't Be Evil" motto
I wonder what happens when the googlers realize that they could have had
WeirdStuff on their campus...
In message
our thermal noise as a source of PN, and
dramatically so.
But I doubt short and long term performance will improve.
Even if you can find a zero-turnover cut at a convenient temperature,
I don't think anybody know how to produce mK temperature *stability*
at cryogenic temperatures ?
--
Poul-Henning
http://jan.mayen.no/nyheter/destruksjon-av-loran-c-long-range-navigation/
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained
icture of this ? It would be wonderful to have for future
discussions...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can
ble*, or he means "Dielectric Constant" in which case the
number is physically impossible.
[3] Because USSR wasn't very good at PTFE to begin with.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer |
;
wires for stress-relief worked just fine.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
_
In message
In message
s use. (Integrator
>with a 50ms time constant.)
The audiohomeopathy crowd claims to have PTFE/Teflon capacitors available
in these kinds of sizes and I've been meaning to buy one just to see if
it truly is PTFE or not, but list-prizes has nothing to do with reality.
--
Poul-Henning Kamp |
e company in the business spent an awful lot of money failing
to get Cobalt to work, before somebody said "But wait, isn't that
one of the magnetic elements ?"
It now seems to become Wolfram instead.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 95
HV with a +/-5V power supply.
Offset voltage (stability) is a, if not the, *very* important
parameter for the integrator.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malic
hard time seeing how you can not get worse S/N that way.
If you want to do it with a LED, I think it needs to be a stabilized
LED-Laser.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never
e not even established if
this voltage affects the HP5065 performance in the first place.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute t
measure if it
is gives better stability if I drive the lamp with constant current,
constant power, constant voltage or constant photo-I...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Neve
e, and I applied receiver 2's correction to both receivers to
>generate this graph).
Yes, these cheap "clock-receivers" vary a lot and they are usually also
very temperature sensitive.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since
ere
>is no perfect solution.
Somebody at BIPM told me that their antennas were heated and thermostatically
kept at constant temperature.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-taho
In message
hort or long, but it was a fair bit better
than 20ms.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
_
e transmitters is off and the other is on.
>Has anybody looked for that sort of pattern?
I have seen signs of that in my data in the shape of phase-shifts,
and that sort of made me concentrate on DCF & LORAN.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org |
n power having the DCF77 blame code running or not.
After all, it's only sixty trival patterns to match once a second...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
N
is that the
power-modulation is carrier-synchronous, which makes them much
easier to spot.
So really: Get yourself an 1MSPS ADC chip and go that route instead.
(In theory, certain modern sound-cards should be usable for this if
you can rip out their low-pass filters. Havn't tried.)
--
Poul-Hen
In message
f a '1' and '0' being confused is close to zero.
That will get you minute lock, even with 70%-90% missing
pulses, in a matter of minutes if you use a longer
shift register.
I did a parallel prototype for MSF, but I didn't need it
so I never completed it, not sure I have it around any
more.
I should
wafers already:
https://www.micralyne.com/fabrication-capabilities/etching/
Would that open up any interesting possibilities, or is the simple
cylinder slab by definition the best ?
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
Fr
allenge.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
___
time-nuts ma
s - how big is your crystal.
Well, they appearantly make a mouth-full at a time, so that is
covered...
I don't think the dentist machines are precise enough though,
as I understood it, the state-of-the-art stuff has built in
laser-interferrometers etc.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
I can borrow one of those machines, but...
The prices mentioned were not prohibitive in the context, you would
break even well before a thousand units at the prices mentioned.
Poul-Henning
[1] Surprising to me is that modern dentists are highly kitted for
CNC-ing very hard ceramic materials at hig
ing signal.
Yes, but that doesn't give you galvanic isolation, which I think is almost
mandatory unless it is a metrology situation.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never
ware that specs are for balanced input signals, if you tie
one of the inputs to a threshold voltage, published specs may not apply,
in particular speed.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-
ed with that, I used a small transformer to balance the signal
and then into LVDS receiver through a voltage divider. Worked well,
but I didn't measure the jitter, it was just for a micro-controller.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since
ath mathematical software.
Yes, "Trust but verify" :-)
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adeq
In message
In message <d5ecc3fb-ecaa-875f-f599-4b484d33b...@rubidium.dyndns.org>, Magnus D
anielson writes:
>If we rather focused on maintaining and extent it into the
>future, that would be a great way to take care of the heritage. I can
>see myself contributing to that.
Ditto.
-
ome equipment.
Or simply that you are too impatient and your previous correction has
not fully been effected yet.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to m
anything close to 1PPM trimpots, hunt eBay for "ESI dekapot"
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be
ave kept me busy with other things, so I'll happily
pass this ball to anybody else who might want a go...
Poul-Henning
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice wha
.
Most carrier frequency facilities had bottom frequencies in the 50kHz
area or higher.
Bob brought up the sub-Hz stuff, I pressume he knows what it is used for.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD
os)1 Hz ….
>great way to waste a lot of time.
Sorry, I don't see the challenge: HP3458A in sampling mode, careful cabling,
done.
At RF frequencies where you have to think about impedance however...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TC
t ...
No consultants were involved, they did it in mass production at WE.
Remember, they needed thousands of repeaters per *coax* and there were
handfulls of coax'es in each cable.
This is the relevant article about the amplitude:
https://archive.org/details/bstj53-10-1935
tells the 3336 to step 4kHz up to the next channel. The crucial
trick is that the 3336 produces the exact same output level for all
10800 channels.
See: HPJ May 1980.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer
In message <5e3f68620fdb8f2e5d62e9907a44c6eb.squir...@email.powweb.com>, "Chris
Caudle" writes:
>On Wed, November 29, 2017 3:51 pm, Poul-Henning Kamp wrote:
>> While it is tempting and probably easiest to use a DDS style
>> generator, I recommend a sy
In message <f413435c-c5a8-4cc4-9912-2ac7e7662...@radioengineering.com>, Andy
ZL3AG via time-nuts writes:
>HP 5359A Time Synthesiser?
If we're only talking 1PPS timestamping and nothing better and more
flexible is available, then yes.
--
Poul-Henning Kamp | UNIX since Z
one instead, to avoid
trouble with numeric spurs.
The HP3336 with its outstanding level-control is a much
overlooked bargain for this kind of stuff.
Poul-Henning
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer
In message <2b66d682-15cf-465f-9a34-d7f7e7929...@n1k.org>, Bob kb8tq writes:
>Straight cardboard *is* an issue on RF coils in humidity.
The C-field coil is DC only.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 95
In message <4bec82c4-583e-4632-8589-d898cc2bd...@n1k.org>, Bob kb8tq writes:
>I had never realized there was a format for expressing “I think it was 1967
>but it’s
>all a bit of a blur”.
I think that is one of the major reasons for the revision.
--
Poul-Henning Ka
Seems there is an ISO8601 revision in progress ?
https://www.loc.gov/standards/datetime/
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately
s package.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
___
time-nuts mai
eater than 1PPM on that current when driven from a
>fixed voltage thru a resistor.
>
>Does anyone use current drive?
The standard circuit is current drive...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD s
This beast may have some interesting uses:
http://www.analog.com/en/products/clock-and-timing/clock-generation-distribution/clock-synchronization/ad9544.html
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer
t;wash" it away
in airflow with much higher energy content, as is typically done
in clean-rooms.
That still leaves you with the thermal radiation imbalance from the
higher temperature of the human skin, which is why "nano" laboratories
sometimes are kept at an uncomfortably warm temperat
r the potential for people to attach wires to the PC-speaker
as a means to get an electrical signal also.
These days the speaker is almost the last usable interface for this.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD commit
he case. I don't know if they have firmware revs focused on timing,
but even if they do, the hardware for the PPS output doesn't seem particularly
well geared towards real-time uses, but more for post-factum correction.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org
In message
LORSTA Jan Mayen this time:
http://jan.mayen.no/nyheter/loran-c-masten-gar-ned/
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately
gt;All other readings are stable.
>Rotating the knob back and forth restores the previous readings.
>I am considering a fault in the 137 MHz circuitry.
It can also be the synth which bounces up and down in frequency if the
delay-line has drifted.
--
Poul-Henning Kamp | UNIX since Zilog
e same place on the scale, it is probably
a mechanical issue in the meter, if it is all over the scale it
could be the rotary switch which selects what the meter shows.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | B
> revision will read the far more sensible: "Non-rubidium *or*
>> having ..."
>
>Yes, singling out Rubidium is kind of weird.
I see that rule as a way to carve out telco-class rubidiums, and
that's why I think "or" would make much more sense than "a
In message <20170820120742.c48c69758cc9fa4856ab0...@kinali.ch>, Attila Kinali
writes:
>On Sun, 20 Aug 2017 08:50:59 +0000
>"Poul-Henning Kamp" <p...@phk.freebsd.dk> wrote:
>
>> >Bob your right its interesting that the sales locations are
In message
se DC signal :-)
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
___
time-
you are a very impatient
person.
It is also, as I understand it, the primary reason for fried out
OCXOs...
See also:
http://phk.freebsd.dk/hacks/HP5065A/20150925_ocxo_preheat/index.html
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since
/HP5065A/20150930_dcdc/index.html
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
__
em
here in Denmark back when 1e9 seconds rolled around :-)
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequat
s got shipped back to the manufacturer.
He suspected that back at the manufacturer, the "Really good"
got a "MIL-GRADE" stamp :-)
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-taho
disk drives: Measurement of jitter of mechanical
origin must happen on the analog side of the differential read
amplifier, which usually balances a couple of volts up for cost
reasons.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeB
the switch set to START COM. Oddly enough I get the same 15 ns with
>the switch set to SEP, and going through a 6 ft cable between start and
>stop.
Have you checked the trigger polarities ?
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC
In message <1317347843.1873959.1498418740...@mail.yahoo.com>, Ulf Kylenfall via
time-nuts writes:
>Why not take a look at mixed D-Sub connectors?
Because they cost a fortune ?
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP sinc
te/adjust the analog circuitry with DAC's set (infrequently)
by a uC.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequatel
ly
need 14 bits.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
___
ti
levant to point out that, as *always* the 'I' term
should not be enabled until the P(ID) *output* is no longer clamped.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice
T += T0_offset;
T *= T0_scale;
return (T);
}
abort("You have problems...");
}
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer
rator
pale in comparison to having a handful of smaller generators in
parallel.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to
k-in amplifier.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
___
time-nuts
terior temperature, which I should prefer ?
Disregard aging of electronics and materials, we all know that
stuff, what I'm interested in is at which exterior temperature
OCXO ovens work best ?
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
ocouples in high temperature
is platinum, which is horribly expensive by comparison and more
prone to noise than thermocouples.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute t
the frequency difference between two
free-running silicon oscillators with different physical design.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can
perature measurement"
:-)
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
t exist either.
https://en.wikipedia.org/wiki/Resistance_thermometer#History
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be exp
if you use them for mixed cooling/heating.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incomp
In message
ock.
Since any physicists at NIST will be keenly aware of the Nobel
Prize dangling in front of any competently measured effect, I think
we can trust them to be on the ball :-)
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer
testhat could be suitable?
I did a divider board for the LED clock:
http://phk.freebsd.dk/hacks/HP5065A/20160112_working_clock/index.html
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-
this time.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
___
time-nuts
DC, common mode and differential mode. Isolation
>amplifier should be part of the arsenal.
EMI is part of it, but there raw synchronism is a significant
source of systematic errors because the "noise" is no longer
gaussian.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org
ng the counters internal, undisturbed timebase.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained
In message <a3865.7ccf4f2a.4642c...@aol.com>, GandalfG8--- via time-nuts writes:
>Is anybody monitoring eLoran from Anthorn?
I don't see it here in Denmark either.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD
In message
these products.
They're probably based around one of C-max chips:
http://www.c-max-time.com/products/showProduct.php?id=17
(This is the old Temic technology that has wandered all over the place...)
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/I
erformance, on future differential
signals.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be expl
1 - 100 of 1767 matches
Mail list logo
