could be wrong.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob
kb8tq
Sent: Friday, May 18, 2018 9:46 PM
Hi
There are a number of papers out and about about the limits on OCXO
performance.
The bottom line is that coming up with a high
Well, how about the frequency drift between a pendulum, a tuning fork,
and a crystal.
Atomic standards could be added depending on availability.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Hal
Murray
Sent: Thursday, May 10, 2018 11:56
Um, time dilation by altitude if you have access to a mile high change.
Or subjective time dilation when a person is prevented from doing a task
on time.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Hal
Murray
Sent: Thursday, May 10
times more accurate than that for 1000 grams.
Hope I haven't strayed too far off topic, and wasted my time.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Richard
(Rick) Karlquist
Sent: Sunday, April 22, 2018 4:11 PM
To: Discussion
I've got a couple of HP 5060-7202 extenders with 22 contacts. You're
welcome to them if you think they might work.
Bill_S
On 4/21/2018 12:26 AM, Pete Lancashire wrote:
Does not hurt to ask, looking for ...
1259-1287 adapter
05062-60127 extender
05062-60128 extender
05062-60187 extender
of hard science fiction.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Dana
Whitlow
Sent: Friday, April 13, 2018 8:39 AM
To: Tom Van Baak; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Pulsars, clocks
I have two of these with 488 interfaces.
Would appreciate any 488 info you get.
br...@otelco.net
-Original Message-
From: Bob kb8tq
Sent: Saturday, April 07, 2018 10:27 PM
To: lee...@aol.com ; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Looking for
them slowly drift in a temperature stable environment.
But the worst problem was the introduction of frame resynchronizers.
This meant you were now measuring the local station frequency reference,
which wasn't usually all that good. So we cancelled the color burst
frequency standard project.--
Bill
is still supported by
the National Research Council of Canada Time Service. The dial in number is
613 745-3900.
Bill, W1BKR
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I have a relatively new Franklin Master Clock, model MP088-00A021 made in
Philadelphia that just died. It's a minute master with reversing polarity.
Does anyone have a schematic? The company is out of business after many years
of making school clocks and no info on the web.
Bill
w1bkr
.
All in all, another fine learning experience. Sold the 103 and 113 after
a few years, and got into telephone GPS with a pair of HP Z3801A and a
16 foot plastic pipe mast for two HP conical antennas. Ended with the
Lucent stuff. Inquiries for recycling Lucent stuff welcome.
Bill Hawkins
bill.i
/gpsdo-loss-of-satellitesfix-troubleshooting/https://github.com/pigrew/trueposctrl
https://www.youtube.com/watch?v=c35RCqOOulY
--
Bill Byrom N5BB
On Sun, Mar 18, 2018, at 9:59 AM, John Green wrote:
> There is a small, about 3.5" by 4.5", GPSDO board being offered
> by several>
ate osculation observations.
Amateur Radio nets and phone, Skype for Business, or WebEx conference
calls usually start pretty close to the scheduled time. In some cases
people start wondering if the organizer is delayed after about 15 to
30 seconds.--
Bill Byrom N
.pdf
https://spectrum.ieee.org/tech-talk/telecom/wireless/us-master-clock-keepers-test-ground-alternative-to-gps--
Bill Byrom N5BB
On Tue, Mar 13, 2018, at 5:17 PM, Stewart Cobb wrote:
> Peter Reilley suggests a backup to GPS using terrestrial
> transmitters. This> idea has been around s
caused by
solid state power supplies and by tap changing by the power companies to
match loads to minimize transmission losses. I've considered using a
mechanical synchronous motor and slotted wheel to eliminate noise near
the zero crossing, but now that I am 80, I don't give a darn, you see.
Bill
that helps,
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of David
G. McGaw
Sent: Thursday, March 08, 2018 11:01 PM
Subject: Re: [time-nuts] Frequency deviations in Europe affect clocks
Can someone please explain why not paying your bills
tem-originating-in-serbia-kosovo-political-solution-urgently-needed-in-addition-to-technical/
-Bill
signature.asc
Description: Message signed with OpenPGP
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.)
On Mon, 5 Mar 2018 03:20:40 -0500, Don Murray via time-nuts wrote:
>Hi Bill...
>-
>My Rolex GMT Master was stolen back in '75,
>so no luck on that. - Rolex is a bit pricey for
>my needs.
>-
>My Seiko CQ001M, one of the first Seiko Digitals,
>was amazing. - Over the time
form but I've
heard good comments.
Bill
On 3/5/2018 1:38 AM, Don Murray via time-nuts wrote:
Hello Time Nuts...
After 6 years of no troubles, in sync with WWV any
hour of the day, flawless transfer between
standard and daylight time my Stauer Titanium
Atomic wristwatch bite the dust
o.com/cgi-bin/mailman/listinfo/time-nuts
>and follow the instructions there.
Bill Beam
NL7F
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when it shouldn't.
So I withdraw my comment about aluminum electrolytics, which was made
without a timenuts perspective.
Determining maximum error currents and offsets is simply a matter of
mathematics, which is left as an exercise for the student.
Regards,
Bill Hawkins
Corby
A time constant is calculated from R and C.
If 50 milliseconds is the correct number, R for 5 mfd is 10,000 ohms.
You could use an aluminum electrolytic for the capacitor.
Can you tell us where the 50 ms number came from?
Regards,
Bill Hawkins
-Original Message-
From: time
Learned tonight that J. P. Morgan got his start by buying 25 K defective
rifles for %3.50 each and selling them to the Army for $25 each. You
have no reason to trust a listing.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob
kb8tq
Sent
.
Correcting my earlier post, the new launch date for STP-2 appears to be "no
earlier than" June, 2018. I'm relying on this source for launch estimates:
https://spaceflightnow.com/launch-schedule/
--
Bill Byrom N5BB
On Fri, Feb 9, 2018, at 7:54 AM, jimlux wrote:
> On 2/8/18 8:55 PM, Bil
-navigation
For a fun video about this project suitable for non-time-nuts, see:
https://www.nasa.gov/mission_pages/tdm/clock/sammy-the-second.html
--
Bill Byrom N5BB
On Tue, Mar 21, 2017, at 11:36 PM, Bill Byrom wrote:
> NASA's Deep Space Atomic Clock test mission is moving toward a late-2
I own a Heathkit GC 1000 Most Accurate Clock. It's in terrific shape but not
used for many years. It has stopped locking up to WWV and sometimes freezes
up. Can any of our "nuts" repair it? Anyone want to buy it?
Bill, w1...@aol.com
___
online, go here:
http://video.unctv.org/video/3008204310
This is the UNC Public TV web site.
Joe Gray
W5JG
On Tue, Jan 16, 2018 at 2:28 PM, Bill Tracey <b...@ewjt.com> wrote:
To record OTA television I use an HDHomeRun :
https://www.silicondust.com/hdhomerun/
I'll grab tonight's run o
To record OTA television I use an HDHomeRun :
https://www.silicondust.com/hdhomerun/
I'll grab tonight's run of The Secret of Tuxedo Park
Cheers,
Bill
At 09:04 AM 1/16/2018, you wrote:
I can't stress enough how important Loomis was to the history of
precise timekeeping in early radio
Thank you, Charles.
What a clever way to minimize the power dissipation in Q4 with the
components of the day.
A switching regulator without the steep (and noisy) transients of
today's switchers.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com
Charles,
What does the unijunction 2N2646 do in the oven controller?
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Charles
Steinmetz
Sent: Monday, January 08, 2018 7:50 AM
Also, note that the HP schematics of the 10544 have some
Doubleday
books. I seem to have inherited some of those genes. But I can't tell a
bad equation from a good one, and my French ended in High School.
Happy new year to the best list on the Internet.
Bill Hawkins
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re no fast edges.
(iii) If the counter voltage threshold is set to a value near the upper
or lower waveform levels, it's easier to get spurious counts. Noise or
spurious ingress (broken or poor quality cable shield) can cause
problems.
--
Bill Byrom N5BB
On Thu, Dec 14, 2017, at 10:58 AM, Attila Ki
kHz IF
amplifier signal chain, followed by an IC audio amplifier. I would think
that the signal delay inside the receiver from antenna to audio output
would be a couple of hundred microseconds, much less than one cycle of
the demodulated audio “tick”.--
Bill Byrom N5BB
On Fri, Dec 8, 2017, at 07
The Q of Helmholtz resonators is derived here:
https://en.wikibooks.org/wiki/Acoustics/Flow-induced_Oscillations_of_a_Helmholtz_Resonator
Some Q measurements of bottles are described here:
https://math.dartmouth.edu/archive/m5f10/public_html/proj/ArainGolvach.pdf
--
Bill Byrom N5BB
On Sat, Dec
WWV.
OTOH, NTP has marvelous mathematical tricks to reduce Internet
propagation delay.
A scheme to reduce varying atmospheric delay would be useful, if there
weren't much better ways to get a standard frequency.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun
.
If this sounds like I know what I'm saying, you may be disappointed.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Tim
Shoppa
Sent: Tuesday, November 14, 2017 9:53 PM
To: Discussion of precise time and frequency measurement
Subject: Re
>Question. Rise and fall times are sub 40ps is that a typo in your email
No, those are the times provided in the test report that was sent with
the pulser. Modern laser diode drivers are very fast (a MAX 3930 has a
spec'd risetime of ~25 ps).
--
Bill Ezell
--
The day Microsoft ma
7.6% overshoot.
Screenshot attached, don't know if it will actually make it into the post.
This is exactly what I need for adjusting various of my time-related
instruments.
--
Bill Ezell
--
The day Microsoft makes something that doesn't suck
will be the day they make vacuum cleaners
Sadly, it is not the phone users who will benefit. It is the advertisers
who use your location to send targeted ads.
Time marches on.
Bill Hawkins
-Original Message-
From: Mark Sims
Sent: Wednesday, September 27, 2017 6:54 AM
Broadcom has released a phone chip that supports L5
Shouldn't that be 8 data bits?
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Richard
Solomon
Sent: Saturday, September 09, 2017 4:24 PM
I downloaded and installed Z38XX, configured both the Port and Device to
the recommended parameters
http://www.arrl.org/news/space-weather-prediction-center-upgrades-geomagnetic-storm-watch-to-g3-strong
--
Bill Byrom N5BB
On Wed, Sep 6, 2017, at 04:19 PM, Alan Melia wrote:
> The flare has been and gone!...is this another case of journalists
> mixing up a flare with a CME ?
> Ala
I acquired a Huber+Suhner GPS / GSM Type 1399.17.0048 antenna at a local
Hamfest. It has N connectors.
Does anyone know its specs ?
Bill R
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Receivers:
http://tf.boulder.nist.gov/general/pdf/1384.pdf
Absolute Calibration of a Geodetic Time Transfer System:
http://xenon.colorado.edu/paperIrevise2.pdf
--
Bill Byrom N5BB
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My HP conical antennas had N connectors, so I used 50 feet of RG-8.
Z3801 receivers never had a problem.
RG-8 is a sturdy cable, which may be the primary consideration for a 38
foot drop unsupported through the mast.
Don't have any comparison to lighter cable, though.
Bill Hawkins
On Mon, 14 Aug 2017 18:19:56 -0700, jimlux wrote:
>On 8/14/17 5:58 PM, Bill Beam wrote:
>> GPS orbit inclination is 50-60deg.
>55 degrees
Current TLE show I= low of 51.7 to I= high of 56.6.
>> At my latitude of 65N satellites are about 15deg above the horizon to the
>
pinions. I hate spam.
>___
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>To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>and follow the instructions there.
Bill Beam
NL7F
_
This has been an area of interest to the US Air Force for many years:
http://www.ainonline.com/aviation-news/aviation-international-news/2006-10-18/usaf-facility-tests-gps-jamming-vulnerability
--
Bill Byrom N5BB
On Mon, Aug 14, 2017, at 12:46 AM, Clint Jay wrote:
> Didn't someone demonstr
declining years -
not for resale.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Jeremy
Nichols
Sent: Wednesday, August 09, 2017 8:12 PM
Definitely spendy. Is the 115 as noisy as the 113 (similar but w/analog
clock)? Wonder what *les douanes
/?utm_source=Naked+Security+-+Sophos+List
_campaign=f2c7691392-naked%252Bsecurity_medium=email_term=0_
31623bb782-f2c7691392-455148921
My apologies for the long link. You could try Googling the subject if
the link is broken up by your mailer.
Bill Hawkins
Hi Tom
I passed this along to two of my old time computer gurus - I am sure they will
want to celebrate!!
73,
Bill, WA2DVU
Cape May
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Tom Van Baak
Sent: Wednesday, July 12, 2017 8:19 AM
To: Discussion
ut
Epoch + 1.5B seconds = 07/13/17 21:40:00
%
And if they haven't noticed, it might be a good time to point it out.
End copy of note
Some of us are impressed by long strings of zeros, so here I am,
pointing it out.
Bill Hawkins
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time-nuts mailing lis
and power dissipation in resistors, but obviously I didn't
have a practical understanding of the current handling capacity of the
wire. The wire acted as a fuse before the primary circuit fuse or mains
circuit breaker had a chance to trip.
--
Bill Byrom N5BB
- Original message -
From: Chris
Dave,
I have a complete 527A with a slightly screwed up case (someone removed
the handles and smoothed the edges!) that was working when I last used
it about 6 years ago. The crt at the time was good and working. I had
planned to put it on ebay but never got around to it. Email me off list
if
ap seconds, either.
Tried to find him, but only found a 2013 ad for a time keeper to
maintain 1000 clocks in various castles.
Hope that wasn't too far off topic.
Bill Hawkins
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have the same
work to do as if the fuse had blown. If it starts bright and dims, you
may be forming electrolytics.
If the bulb maintains the same brightness, try a bigger bulb - or
disconnect the ovens.
You definitely need to read the part about running the ion pump.
Bill Hawkins
Disclaimer: I
Yes, the GR-874 was used on a number of Tektronix products introduced in
the 1960's and 1970's.
https://en.wikipedia.org/wiki/GR_connector
http://w140.com/tekwiki/wiki/GR-874_connector
Both the GR-874 and APC-7 connectors are sexless, and any connector can
mate with any other.
--
Bill Byrom N5BB
, but it is
well built. Have moved to an old folks home and found other projects to
keep me occupied. Make me an offer that might motivate me to pack and
ship it, with the data I collected.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Mark
with it.
This is no criticism of Mark Sim's work. It tells you all you ought to
know. I just have trouble assimilating it.
Good luck.
Bill Hawkins
-Original Message-
From: Frank Howell
Sent: Monday, May 22, 2017 4:05 PM
Hi Folks,
Great list...I'm learning a lot. Could I trouble you for suggested
readings
FWIW, that looks like aviation equipment (gov't or civil), with a
locking connector.
That stuff is designed for minimum size and weight. You might find the
inside of the box quite cramped.
Buying aviation parts is even more expensive than buying boat parts.
Bill Hawkins
-Original Message
, that is something you do not choose to reveal.
Bill Hawkins
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be easily installed on another website. If anyone knows
how to do this, please let me know! I'm hoping Andrew can assist me.
--
Bill Byrom N5BB
- Original message -
From: Jerry Hancock <je...@hanler.com>
To: Discussion of precise time and frequency measurement
<time-nuts@febo.com
Labs could have used a common gas heater for the crystal ovens, with a
bit of rewiring.
No fire hazard there - you've got a chimney. Also, flame safety is well
developed for gas heaters.
Would have required throttling gas flow control.
Bill Hawkins
Another possibility is circulating hot water
which must be acquired in equivalent time mode to build up a waveform
record.
--
Bill Byrom N5BB
Tektronix RF Application Engineer
- Original message -
From: Hal Murray <hmur...@megapathdsl.net>
To: Discussion of precise time and frequency measurement
<time-nuts@febo.com>
Cc: h
Hi,
I am looking for a service manual for XL Microwave Model 3401 Frequency Counter.
Please advise if you have one for sale or one I could dowmload.
Bill Reed
br...@otelco.net
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This email has been checked for viruses by Avast antivirus software.
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As you have heard Verizon is canceling their email address operation. I
don't know when but it will be soon. My new email address will be
bill.ric...@gmail.com <mailto:bill.ric...@gmail.com>
Please correct your address book.
Thank you.
Bill Riches, WA2DVU
dB Electronics
the amplifying device.
Sometimes that is reason the units were for sale.
Hope I'm wrong.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Dave
Wood
Sent: Saturday, April 22, 2017 8:43 PM
Anyone on the list own the above Time Code Readesr. I have
known analog dither
noise before an A/D, then remove that noise digitally from the result.
This can improve the accuracy of systems by reducing the effect of
differential nonlinearity and other system errors.
--
Bill Byrom N5BB
Full disclosure: I am a Tektronix Application Engineer
- Original
the system is balanced at the
potential energy peak, and only random noise can push the system into
a final state A or B over a significant length of time.
Sorry if this is considered obvious or trivial.
--
Bill Byrom N5BB
- Original message -
From: jimlux <jim...@earthlink.
0 in "2001: A Space Odyssey."
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob
kb8tq
Sent: Sunday, April 09, 2017 1:34 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] TAPR TICC boxed (i
at wrist temperature
and 1/3 at bedroom temperature, which varies with the seasons.
Would a ceramic capacitor crafted for a certain temperature coefficient
work? Can the fork have a crafted tempco?
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf
of minimum activity also minimized the cost of making that
adjustment. Sorry, I have no recent data, but it sure feels lonely to be
up at 4:30 AM.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Jeremy
Nichols
Sent: Wednesday, April 05, 2017
cycles per second. They count cycles instead of measuring
the
frequency. You can count cycles with a synchronous clock.
This becomes less tidy when DC tie lines are used, because inverters
have
to be adjusted to get the correct power flow.
Hope I got most of that right.
Bill Hawkins
. No foreign.
Search CXR Larus on Ebay and you will see that this is a great price. Ebay is
asking that much for one card.
If no response in two weeks, I plan on putting on Ebay.
If you are interested, contact me offline. I can send pictures.
Bill Reed
br...@otelco.net
---
This email has been checked
Before you go looking for flaws in space, read the comments to the
sciencemag article at the link.
Thomas Lee Elifritz is informative.
It's amazing what you can do with math if you make a few simplifying
assumptions.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts
mic Clock Based Radio Tracking:
https://www.researchgate.net/publication/293648187_Preliminary_Investigation_of_Onboard_Orbit_Determination_using_Deep_Space_Atomic_Clock_Based_Radio_Tracking
--
Bill Byrom N5BB
- Original message -
From: Gregory Beat <w...@icloud.com>
To: time-nuts@f
ike to see
the histogram.
Are you using phase detector 1 or 2? What are the details for your loop
filter?
--
Bill Byrom N5BB
- Original message -
From: David Scott Coburn <scot...@optonline.net>
To: time-nuts@febo.com
Subject: [time-nuts] PLL performance?
Date: Mon, 20 Mar 2017 21:07:03 -0400
reduce the Q, but only while the fork was touching the
contacts.
When the battery is switched off, amplitude would decay until the
contacts were no longer touched.
Then you'd get over a minute for it to stop.
At least, that's how it looks to this mechanical engineer.
Bill Hawkins
-Original
for setting the weights at the end of the
fork tines?
Best regards,
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Morris
Odell
Sent: Thursday, March 16, 2017 4:23 AM
To: time-nuts@febo.com
Subject: [time-nuts] Antique precision timing
the
histogram) could easily be +/- 25 ps. There is no mention of long-term
drift, since that isn't a typical use of this part. It would be
interesting to put one in a simple oven and see how it drifts over a
few months.
--
Bill Byrom N5BB
- Original message -
From: Christopher Hoover
×
10−16 per meter of change in height.
--
Bill Byrom N5BB
On Tue, Feb 21, 2017, at 11:13 AM, Rhoderick Beery wrote:
> Greetings Time-Nuts!
>
> I'm a physics theorist interested in performing an experiment
> to measure
> the gravitational time dilation beneath the surface
shift of about 1.1 × 10−16
> per meter of change in height.
So at your laboratory depth of 1.1 km, the fractional frequency change
should be about:
1.2 x 10-13 (1.2 parts in 10^13)
--
Bill Byrom N5BB
On Tue, Feb 21, 2017, at 11:13 AM, Rhoderick Beery wrote:
> I'm a physics the
they named the town for someplace warm.
Let me know if you are seriously considering this, and I will find a
contact for you.
Bill Hawkins
-Original Message-----
From: Bill Hawkins [mailto:bill.i...@pobox.com]
Sent: Tuesday, February 21, 2017 8:08 PM
Neutrinos? Look up the OPERA
Wisconsin
but are not noticed there, AFAIK.
Bill Hawkins (Resident of Minnesota, but not a physicist, just a BSME)
-Original Message-
From: Bob Stewart
Sent: Tuesday, February 21, 2017 1:48 PM
Hi,
Have you been in touch with Fermi-Lab? They run a neutrino experiment
with a receiver
Well, if it was not working when you acquired it, the physics package
had probably reached the end of its life.
If it had been working recently and is not now, it might be repairable.
Others on this list know more about repairing than I.
Bill Hawkins
-Original Message-
From: David
Is it possible that the higher temp keeps the tube "cooked off?"
Bill Dailey
> On Feb 19, 2017, at 12:54 PM, <cdel...@juno.com> <cdel...@juno.com> wrote:
>
> Hi,
>
> The tiny coil inside the beam path is the low frequency coil used for DC
>
commonly available
radio related equipment. In my opinion the BC-221 was a technically
beautiful precision instrument. It was the time-nuts tool of choice for
several decades!
--
Bill Byrom N5BB
On Sun, Feb 12, 2017, at 08:31 PM, Bob Camp wrote:
> Hi
>
> If you look at a typic
a constant amplitude as
the phase is shifted.
Here is an example for an I/Q modulator IC which works from 5 MHz
to 1.6 GHz:
http://www.linear.com/product/LTC5598
--
Bill Byrom N5BB
Tektronix
On Wed, Feb 8, 2017, at 05:25 AM, Mattia Rizzi wrote:
> Hello,
> thank you all
is an adventure, but it's best to check the
pipermail/time-nuts archive for previous work.
Good fortune on your quest for knowledge.
Bill Hawkins
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-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bill Riches
Sent: Friday, February 3, 2017 10:02 PM
To: 'Discussion of precise time and frequency measurement' <time-nuts@febo.com>
Subject: [time-nuts] Wildwood NJ ELoran
Here is a dropbo
Here is a dropbox link to Eloran from xmitter at Wildwood, NJ. I am 10 miles
away and it is from my hp SA over a long average.
https://www.dropbox.com/s/gxa85mz00z5l0cp/eloran%20dec%208.jpg?dl=0
73, Bill, WA2DVU
Cape May
-Original Message
100 khz.
73,
Bill, WA2DVU
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of John Marvin
Sent: Friday, February 3, 2017 1:21 AM
To: time-nuts@febo.com
Subject: Re: [time-nuts] eLoran test 6 Feb for almost 2 months
I don't have a Loran receiver, and I
y
high quality attenuator). This is the same as saying that the VSWR
(Voltage Standing Wave Ratio) is close to 1. A 40 dB return loss
corresponds to a VSWR of 1.02. If an RF filter doesn't see a low VSWR
load, it may not produce the desired filtering behavior.
--
Bill Byrom N5BB
On Thu, Jan 19, 2
survey in conjunction with the
25 MHz transmitter for safety purposes? You may have a high RF field in
that area, and if the V/m is too great you will have many difficulties.
--
Bill Byrom N5BB
On Fri, Jan 20, 2017, at 01:21 PM, Bob Camp wrote:
> Hi
>
> I would bet that
. As I suggested
earlier, try lowering the input level by 5 or 10 dB and see if the
harmonics go down linearly.
--
Bill Byrom N5BB
On Tue, Jan 17, 2017, at 08:40 PM, Rhys D wrote:
> Hi all,
>
> Before I start, let me say I'm rather a newbie at this sort of
> stuff so
> p
things may happen if the power
supply regular isn't working properly.
--
Bill Byrom N5BB
> _
> time-nuts mailing list -- time-nuts@febo.com
> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
.
Digi-key has ZNI devices as surface mount parts. Sparse data said
nothing about a platinum curve.
I'm curious because my former employer did very well selling platinum
RTD sensors, usually 100 ohms at the triple point.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts
stuff.
There are environments where time sync with Wi-Fi hasn't got a chance.
Jim Lux was looking for a COTS solution to time sync, and this might
work in a controlled environment.
Don't even think about consumer radio clocks that sync from unknown
Wi-Fi environments.
Bill Hawkins (John Hawkins son
uld know
more about its capabilities.
Bill Hawkins
-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Martin
VE3OAT
Sent: Saturday, January 07, 2017 3:40 PM
To: time-nuts@febo.com
Subject: [time-nuts] Lavoie WWV Frequency Comparator available
I have a Lav
at your house. :)
--
Bill Byrom N5BB
On Wed, Jan 4, 2017, at 06:56 PM, Bill Hawkins wrote:
> Wonder if these cases could be used on social media to create enough
> fear that there would be a market for AC crowbars capable of blowing
> line/pole transformer HV fuses? There's a
Wonder if these cases could be used on social media to create enough
fear that there would be a market for AC crowbars capable of blowing
line/pole transformer HV fuses? There's a few hits with Google, mostly
for DC crowbars. Too bad relays are so slow.
Bill Hawkins
-Original Message
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