ull load, so that you can also charge the batteries
after an outage...
--
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
own UPS. It would be interesting to see what the
>parts cost totals out to.
Taking the detour around mains is a bad idea, everybody who can are
moving away from it.
>What did you have in mind for a power line monitor?
Plenty of high quality professional ones on eBay
--
Poul-Henning Kamp
use other carriers (USB, TCP/IP etc)
--
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 inc
GPS antenna preamps will croak before you get up to 10V.
--
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 explai
fference in cable-length.
--
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.
_
ling out through
the hard 1000 item limit of my TODO list...
Johns WebSDR is probably a near perfect platform for playing with
this...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD commit
o meet the RoHS criteria and apply the CE
>mark and label."
>
>
>Not really any details onnthe issue.
Which part of "meet the RoHS criteria" was unclear ?
Most likely lead-solder components.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org
LORAN-C was the first with Cesium
--
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.
___
tage peak."
You ought to have stopped and wondered at the "with an air gap in the core"
and pondered if you SPICE models use of an ideal inductor was appropriate
for something as electrically complex as an induction motor...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p.
trol *both* the voltage/time and the frequency/time *both*
during startup and during rundown.
I wouldn't bother fuzzing around with hacks - I'd just go for the
known-to-work solution.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD co
In message
<cabj3bvozu6csxvmigj3dvenzusxac0zuqgyfkz-7lvb2_uv...@mail.gmail.com>, David Wit
ten writes:
>Much is published that comes to naught; I do not have knowledge to judge.
>But it seemed interesting to me.
Anything involving U233 sources is "interesting"...
ly the magnetic impulse.
If that is not enough, consider a small VFD drive, and ramp up voltage+frequency
over 10 seconds. It's slightly more intrusive, as you will need to remove the
starting capacitor from the motor to install the VFD.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p
quot; project, would be to use a 48bit DDS chip to generate
the 60+MHz drive signal for the microwave, and a "geophone" ADC chip
to detect the modulation from the photo-diode, but that is even further
out...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org
..
--
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 mailing
In message <20160522164909.9fbc6cc820403cc70904e...@kinali.ch>, Attila Kinali
writes:
>Hoi Poul-Henning,
>
>On Fri, 20 May 2016 09:52:39 +
>"Poul-Henning Kamp" <p...@phk.freebsd.dk> wrote:
>
>> >Temperature effects are by far the larg
In message <5740fc6e.9030...@rubidium.dyndns.org>, Magnus Danielson writes:
>I see that the slide material is now up there:
>http://www.gps.gov/governance/advisory/meetings/2016-05/
Good thing Edward Tufte didn't attend, he would have had a meltdown :-)
--
Poul-
get below 5e-13, the temperature effects on electronic components
should not be ignored either.
The C-field circuit in particular. (Yes, I'm still working on it, just not
very fast...)
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD commit
presentative, that it makes any
sense to sample it with 24 bits ?
>Temperature effects are by far the largest effects we have to deal with.
Which is why you'd be much better of with 20 sensors at 16 bits,
than a single sensor at 24 bits.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p
ng things:
http://phk.freebsd.dk/hacks/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 e
f a second per year; it's
>the principle of the thing.
Dont knock it, mathematically speaking, your relative benefit of
difference will go asymptotically against infinity over time.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer
es of air so there is bound to be some cross coupling
were temperature sensitivities appear as pressure sensitivity.
--
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 mal
In message <b94f51f5-8498-1710-56b7-b1dd0e062...@earthlink.net>, jimlux writes:
>On 5/15/16 1:12 AM, Poul-Henning Kamp wrote:
>>
>> In message <jh7fjbpcfb612319v9cq8u0blrus9ec...@4ax.com>, David writes:
>>
>>> Commercial use also inclu
that you had to perform _all_ steps of a patent to infringe it:
http://www.supremecourt.gov/opinions/13pdf/12-786_664d.pdf
--
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
rs only work at high rate of photons.
--
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
system overall.
60 kHz is often polluted by switch-mode power supplies.
Check your surroundings for new consumer electronics.
Also: Lawnmover robots.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD
e at the residuals for each satelite and
see where to move:
http://phk.freebsd.dk/raga/sneak/
--
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 adequ
ou to calculate statibilities for:
tau [0..8h]
tau [16h..32h]
...
But with you will have to compensate your uncertainty for the missing
samples.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD
Homo Sapiens in its natural
habitat, and the first indicative results of the shape of such
stories:
http://www.techtimes.com/articles/149164/20160411/fitbit-tracker-likely-saved-this-mans-life-leading-doctors-to-shock-his-heart-back-to-normal.htm
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.
straight line, in practice it is anything but.
--
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.
_
ve less
Stupid question: I would have expected them to use capacitance
optimized transistors, also known as UHF transistors ?
Something like BFQ19 maybe ?
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-
ommitted orders
>before kicking things off.
Yes, please!
--
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 explain
o idea...
It's one I bought cheap and it's not particularly good, so I have not
spent a lot of time on it.
--
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 ad
In message <599355eb-013e-4730-b41f-dd8606b2e...@n1k.org>, Bob Camp writes:
>The 1150 OCXO has an EFC pin on it.
The one I have has both EFC+ and EFC- pins.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD
which may or may not materialize in a couple
of weeks.
--
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 <C66D906890F94E07B26A6139637C04AE@pc52>, "Tom Van Baak" writes:
With respect to 120/240VAC, the 5065 I have is jumpered for 5065, the manual
(available from Artek) has the details.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org
In message <e814f.4cf4fd7d.441b1...@aol.com>, KA2WEU--- via time-nuts writes:
>In my closet I found one of these, any merit to play with it ?
I'm having oodles of fun with mine :-)
http://phk.freebsd.dk/hacks/HP5065A/index.html
--
Poul-Henning Kamp | UNIX si
In message
In message <caa-f0u8pa6xdnulut6r+zbxgw-c3fz-7sdgkhmatjkx_baj...@mail.gmail.com>
, Pete Lancashire writes:
>http://linuxgizmos.com/beefed-up-beaglebone-black-clone-launches-on-indiegogo/
I'm not sure I'd want a WLAN transmitter inside my 5370...
--
Poul-Henning Kamp | U
in real time* is not a solved problem.
If/when you solve it, you would still have the problem of how to
electrically instantiate that time information in the picosecond
domain.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer
.
--
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 mailing
PPS ... that's a bit of
>a problem.
The Oncore GPS gives it to you before, and if the PRS10 has new enough
firmware to support it, you have plenty of time to send it over there
before the PPS pulse.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP sin
SIN offset second by second, so you cannot compensate for the
"negative sawtooth", and the resulting "hanging bridges" means that
you have to us a very unoptimal PLL time constant.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since
members have reported data that suggests a stability about
>10X worse than this.
I'm pretty sure that is easily fixable, it's Zener in the power-supply
which has become temperature sensitive.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
In message
make the three and four digit claim
for their quartz thermometers: Compared to resitive temperature
sensors, practically no energy is dissipated in/by the crystal.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer
In message <am4pr05mb1507d283eede2228e5bbe89695...@am4pr05mb1507.eurprd05.prod.
outlook.com>, Alan Ambrose writes:
>Anyone know why they died out? Did a better technology replace them?
Worse but cheaper technology replaced them.
--
Poul-Henning Kamp | UNIX since Zilog
In message <aabmqgfv6adca...@smtpout02.dca.untd.com>, cdel...@juno.com writes:
>Luciano is correct. The HP 5065A beats all the others easily.
There's one for sale on ebay.fr these days.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP
Hz. What could this have been used
>for, with such a narrow bandwidth?
The 100kHz center frequency pretty much rules out that it comes
from carrier telephony.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | B
gt;on CDMA or some (but not all) advanced TDMA systems.
The BSTJ contains some very interesting articles about how
synchronization got introduced and rolled out in the telephone
network originally.
You can find them on archive.org
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.2
re federal budget into high-tech and consequent innovations.
(while claiming to be a "capitalistic market economy" :-)
--
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 _that_ important any more.
--
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 <56ba2a53.2060...@rubidium.dyndns.org>, Magnus Danielson writes:
>> For more information please read the webpage:
>> http://efts.eu
>
>Agree with Attila, it's a week full of knowledge and fun.
Now, if you could persuade them to do a flea-market also.
not sure I *really* care for most usage.
I don't think most NTPD based servers would even notice the pattern I
saw on my receivers.
--
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 attri
in-house standards.
Here is a quick plot:
http://phk.freebsd.dk/misc/20160126_gps.svg
The two receivers see the same (number of) satelites, but the jumps
happen at widely different times.
Magnitude around 14 microseconds seems confirmed.
These are both Oncore timing receivers.
--
In message <569fde69.2020...@rubidium.dyndns.org>, Magnus Danielson writes:
>Good, then I have not remembered completely wrong.
The 5371 and 5373 manuals are not without relevance either, and
don't overlook the app-notes and the HPJ (1989-02) articles either.
--
Poul-Hen
o explanation good explanation.
Any on-chip PLL's with "spread-spectrum" to fudge EMI tests ?
--
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
n't
add that input just to take up space.
If you insist on pacing via the GPIB, the protocol has a primitive
for that, TRG, which is usually hardwired to the external trigger
circuitry in quality instruments.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/
tographed with flash.)
If you insist on using LEDs as voltage references, the first thing
you need to do is to dip the LED in something which shields it 100%
from incoming light *including infrared*
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP sinc
three-wire handshake is sufficient to cause trouble.
--
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.
__
put,
they're basically heating elements and they don't cool down nearly
fast enough.
Try with fluorescent light instead, there's a reason people accuse
them of flickering.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer
tanding: Talk-only does *not* protecting you
against timing issues on GPIB.
On RS-232, yes, but not on GPIB.
--
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
r are always
in lock-step.
Therefore, talk-only mode is a big advantage in terms of decoupling
on RS-232 and makes almost no difference on GPIB.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tah
PU, even in a DIP8, for something so
mundane...
--
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.
___
the 2-board
version.
See the section about MM5313 here:
http://phk.freebsd.dk/hacks/HP5065A/20151225_clock/index.html
I think you can use my PCB to make the 3-board a 2-board
but you'd have to change some constants in the firmware to send out
50Hz rather than 1Hz.
--
Poul-Henning Kamp
This probably belongs in the category of serious overkill, but it was
a nice excuse to learn KICAD and fab a PCB with it:
http://phk.freebsd.dk/hacks/HP5065A/20160112_working_clock/index.html
I have 9 spare PCBs in case anybody have similar issues.
--
Poul-Henning Kamp | UNIX since
ter or worse ?
--
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-
It seems to me that the code they use for the 6731M signal is botched,
anybody who can confirm ?
--
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
S700s seem to be locking ok again but still with
>the monitored signal dropping out from time to time so I guess we just need
>to be patient and treat it as work in progress.
I can lock too, but best lock is to the 3rd pulse in the master
signal using the slave-code...
--
Poul-Henning
I see both a master and slave on 6731 from Denmark now.
Same signal strength:
http://phk.freebsd.dk/misc/_.svg
--
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
idea ?
What am I overlooking ?
--
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
Not needing isolation amps seems like a plus to me.
--
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
sting output will be coming out of a LPF so
most of the noise will die there?
--
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
o find the zero-crossings ?
--
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.
__
nd than Anthorn.
Are you sure it's not UK trying to rig something up for their eLoran trials ?
--
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 adequate
I spent an hour with the HP8568B to document the time-relevant
signals left in VLF:
http://phk.freebsd.dk/hacks/20151231_end_of_nels/index.html
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since
thorn, 6731Y, is still up.
--
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 <568341b9.8030...@rubidium.dyndns.org>, Magnus Danielson writes:
>Would other titles be found, it would be nice if the links would be
>shared for them too.
We really need to make a time-nuts wiki to collect all this stuff in...
--
Poul-Henning Kamp | UNIX
In message <20151220235152.gc23...@cs.utwente.nl>, Pieter-Tjerk de Boer writes:
>I'm the developer of that WebSDR, and I was already planning to use it to
>make some raw signal recordings on New Year's eve.
Thankyou!
--
Poul-Henning Kamp | UNIX since Zilog
connecting workstations in an office to a hub, so that only the hub
had to attach to the "backbone" coax.
--
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
ow this station will not
>shut down...
I have not been able to find any announcements about Sylt either, but
it would be truly strange if that single station continues running...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD com
topology vs. bus) and signal quality (IT people
were horrible at "sharking" and crimping coax.)
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Nev
that just
a water-fall would be nice...
--
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
kind)
which are certified for medical use, they usually have wastly
superior specs on all these "secondary" paramters, but only
twice the cost.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tah
.
--
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 mailing
ed precision
dramatically.
You really only need 3 stations to navigate, but for typical layouts
the fourth station gives many more nautical square miles per buck
than the first three.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer
nice. The 8000 chain
>should suddenly be quite alone.
Yes. It will be interesting to see if that makes it usable.
--
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
ough conduction.
Tony Waldron argued similar for audio systems:
http://www.fragrantsword.com/twaudio/
--
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
nning
[1] The two lost/marooned Galileo sats have cost about the same as
updating and running Loran-C for 10-15 years would have.
--
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 attrib
-acid is still the best way to go.
--
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.
__
is incompatible with tying all the BNC's together.
--
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 <5672a8ed.1010...@g7iii.net>, Iain Young writes:
>The UK is (supposedly) supportive of eLORAN,
Yeah, but you need 3 transmitters and if norway and france
closes there is *at best* Anthorn and Sylt left.
--
Poul-Henning Kamp | UNIX since Zilog Ze
ds/2015/12/2015-12-17_fda_spurs_and_comments.png
>interpretations and explanations are welcome!
>The board was not enclosed in a metal can for these tests.
Isn't that the explanation ?
Any SMPS in the vicinity is going to show up...
--
Poul-Henning Kamp | UNIX since Zilog Zeus
ory of how US military saw the
light in radio-navigation:
http://phk.freebsd.dk/misc/jack_pierce.html#spring
The full memoir is 1st. class nerd-reading.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD
(almost) 5MHz -> 15 MHz -> 15MHz is just asking for low frequency
trouble.
If I were to design such a product, I would pick the stable OCXO to have
a frequency well removed from the target frequency on as many decimal
digits as possible.
3.1415926535... MHz if I could get away with it.
--
d to be close-in multiples,
so coping with the spurs becomes non-trivial.
That basically means that you need 50% higher DDS and DAC resolution
than everybody else in the market an suddenly it isn't cheap any more.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | T
with pi before putting it
>into their time-plan. :)
Interesting.
In computing we make a random guess at the duration.
The manager is supposed to multiply the numeric part by two and
shift the unit to the next higher one.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.or
In message
In message
ince space is a bit tight, I've been trying to find something like
a "x10 self-biasing amplifier" but without luck.
Any good ideas ?
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-t
ere, so even with the rather suboptimal charging circuit (not atypical
for its vintage) they'll probably survive for a number of years 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 attribu
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