. The Clock-Block has been around for a
few years and took a couple of years to sell out.
>From Tom Holmes, N8ZM
> On Oct 9, 2018, at 1:25 PM, Pete Lancashire wrote:
>
> I just wish the tapr would not discontinue things so fast it seems once you
> see it mentioned it's discontinued
>
Uh, folks...Would the apparently still on hiatus TVB approve of this on-going
Urinary Olympiad? Just asking. And hoping post this won’t start another one.
Tom Holmes, N8ZM
-Original Message-
From: time-nuts On Behalf Of Bob kb8tq
Sent: Friday, August 31, 2018 11:16 AM
To: Martin VE3OAT
clocks?
Tom Holmes, N8ZM
-Original Message-
From: time-nuts On Behalf Of Tom Van Baak
Sent: Tuesday, November 20, 2018 6:31 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] WWV Doppler Shift
> That was the first time that I had seen an xy plot of
John...
I have a nixie tube clock that I purchased at Hamvention about 10 years ago
that had an optional chip which worked with a 1 PPS input. It was built around
a PIC.
Tom Holmes, N8ZM
-Original Message-
From: time-nuts On Behalf Of Bob kb8tq
Sent: Sunday, January 27, 2019 4:34 PM
HI Jim...
I guess the obvious questions are what are you replacing, and what do you
need it to do?
Is this a bench unit or handheld?
Tom Holmes, N8ZM
-Original Message-
From: time-nuts On Behalf Of Jim
Palfreyman
Sent: Saturday, March 23, 2019 8:06 AM
To: Discussion of precise time
to simply issue one line commands to instruments is
very helpful for software development. Others may tell you that the National
Instruments version is better, and in some respects it may be, but you can get
this from Keysight for free. Last I heard, NI wanted $ for their version.
Tom Holmes
Then what was the purpose of the inner oven?
Tom Holmes, N8ZM
-Original Message-
From: time-nuts On Behalf Of Jarl Risum
Sent: Wednesday, April 08, 2020 3:53 PM
To: time-nuts@lists.febo.com
Subject: [time-nuts] The 10811 double oven mystery
I have been puzzled by a mistake which has
Belinda...
In general you want to have the impedances matched in order to keep the
waveforms clean. What that implies is that you have to know the source
impedance as well as the load impedance. Not all sources are 50 ohms, it
seems, so some homework is in order to be successful.
Tom Holmes
Don...
What email client do you use? It did not work like that for me in Outlook.
Usually I can see the poster's email in the From line, and if need be copy it
manually.
Tom Holmes, N8ZM
-Original Message-
From: time-nuts On Behalf Of Don Lewis
Sent: Sunday, June 07, 2020 6:27 PM
be a delayed signal.
Tom Holmes, N8ZM
-Original Message-
From: time-nuts On Behalf Of Dana Whitlow
Sent: Friday, June 05, 2020 9:01 PM
To: Taka Kamiya ; Discussion of precise time and
frequency measurement
Subject: Re: [time-nuts] ThunderBolt question
I'd like to point out
get bad rather than
fade away into noise like analog does. With analog, you get ghosts, but in
digital, you just get garbage which may or may not be decode-able into a
picture and sound.
Tom Holmes, N8ZM
-Original Message-
From: time-nuts On Behalf Of Dana Whitlow
Sent: Saturday, June
sight of how it was designed to work for users in less
than optimum (military field operations) in the first place.
From Tom Holmes, N8ZM
> On Jun 6, 2020, at 7:14 AM, Dana Whitlow wrote:
>
> It's one thing to maintain lock in a multipath environment, quite another
> thing
&g
it if there are better choices, and
there often will be.
Tom Holmes, N8ZM
-Original Message-
From: time-nuts On Behalf Of Dana Whitlow
Sent: Saturday, June 06, 2020 8:52 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] ThunderBolt question
Basically
, is probably due to a
reflection problem in the input side of the attenuator. Could be the attenuator
input impedance is not a good match to the source, or could be a cable
impedance issue.
I hope that suggests some things you could try experimentally and educationally
to sort it out.
Tom
Thanks to Chris, Magnus, and Trent for clearing
things up. Never would have expected going to the
effort of putting in a cheap clock, only to use it
very little.
Who knows what evil lurks in the minds of
engineers? And I am one!
Tom Holmes, N8ZM
-Original Message-
From: time-nuts
Wow! I sure got that wrong! The picture definitely
shows a female TNC with the normal pin
configuration. Guess I need to drink stronger iced
tea.
Tom Holmes, N8ZM
-Original Message-
From: time-nuts
On Behalf Of Tom Holmes
Sent: Friday, November 13, 2020 4:47 PM
To: 'Discussion
Dana, it is a male TNC RP, which means reverse
polarity. The center pins are reversed from the
normal condition. Very commonly done on WiFi gear
in the US due to some FCC paranoia about people
hooking up amplifiers, which the aftermarket world
immediately addressed. Ain't capitalism grand?!
Tom
Am I missing something or maybe I don't understand
the situation , but I am under the impression that
the RTC has it's own battery and crystal unrelated
to the processor clock. Seems like in that case,
the 24 MHz won't have any effect on the
timekeeping drift.
Tom Holmes, N8ZM
-Original
I was told that one of the killers of superconductivity is magnetic fields. I
guess they 'fixed' that.
Tom Holmes, N8ZM
-Original Message-
From: time-nuts On Behalf Of Mike Feher
Sent: Tuesday, January 26, 2021 1:07 PM
To: 'Discussion of precise time and frequency measurement
A lot of the gear, such as the MASER, was in buildings on the ground which
suffered little or no damage.
Tom Holmes, N8ZM
-Original Message-
From: Bob kb8tq
Sent: Tuesday, March 30, 2021 8:40 AM
To: ew ; Discussion of precise time and frequency measurement
Subject: [time-nuts] Re
Wojciech...
Perfect!!
Tom Holmes, N8ZM
-Original Message-
From: Wojciech Owczarek
Sent: Wednesday, April 07, 2021 9:52 AM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] A perfect drink for a time nut (who drinks those kinds of
drinks)
This list sees
Idle speed is simply controlled to an rpm value,
which thus makes it tied, loosely, to the CPU
clock. The phase noise is quite awful, by anyone's
standards, mainly because the parameters measured
to control fuel and spark timing, are noisy.
Tom Holmes, N8ZM
-Original Message-
From: time
degrees shift for there to be a
zero volts DC component to use for steering but the noise sidebands are then
what is measured.
I guess I really need to go play in the lab a bit.
Tom Holmes, N8ZM
-Original Message-
From: Tom Holmes
Sent: Thursday, August 26, 2021 2:27 PM
To: 'Discussion
content ( or modulation if there is any) would not be any different
>between the two paths. I'm not aware that a single DBM used as a
>downconverting mixer shows any preference to the phase angle of the input to
>the LO.
Tom Holmes, N8ZM
-Original Message-
From: Lux, Jim
Sent:
BTW, Skipp, there is a slim chance that a non-amplified antenna is a DC short,
so wise to check that before you try to power
it up from a PS or a receiver..
Tom Holmes, N8ZM
-Original Message-
From: Dana Whitlow
Sent: Saturday, August 21, 2021 12:13 PM
To: Discussion of precise time
Which suggests a possible damping mechanism.
From Tom Holmes, N8ZM
> On Sep 11, 2021, at 10:08 AM, Adrian Godwin wrote:
>
> Doesn't that depend on the configuration of the fields ?
> For instance, a pair of facing like poles will repel and, as you say, make
> a good spring.
wouldn't be so fast to blame the box.
Tom Holmes, N8ZM
-Original Message-
From: Dana Whitlow
Sent: Tuesday, July 20, 2021 2:23 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Re: Thunderbolts ...
My experiences with the T'Bolt have not been entirely
Seems appropriate that it falls on a Two's-day.
Tom Holmes, N8ZM
-Original Message-
From: Jeremy Nichols
Sent: Monday, February 21, 2022 9:23 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Re: too many two's
On Mon, Feb 21, 2022 at 5:24 PM Tom Van
John...
If you haven't already, look into the Leo Bodnar GPSDO. It is a couple hundred
bucks US, and the people I know who have them
are pretty happy with them. Not sure off the top of my head if they make a
PPS, however. And, he is in the UK.
Tom Holmes, N8ZM
-Original Message
ting fast enough?
Tom Holmes, N8ZM
-Original Message-
From: Ed Palmer
Sent: Saturday, January 29, 2022 11:07 AM
To: time-nuts@lists.febo.com
Subject: [time-nuts] Re: HP Z3801A project update
On 2022-01-29 2:30 AM, "Tom Holmes" wrote:
> Ed...
>
> Very good data!
>
expect should cause it to kick on almost immediately
during a very cold start. I am assuming your start
was from room temperature. For a room temp start, I wouldn't expect it to kick
on at all if it's purpose was as reported. Or
do I have the oven functions reversed?
Tom Holmes, N8ZM
"scotsh whiskey"
Was this intentional to indicate that more than a little bit of imbibing was
involved in arriving at the new standards?
Tom Holmes, N8ZM
-Original Message-
From: Lux, Jim
Sent: Thursday, May 12, 2022 5:54 PM
To: time-nuts@lists.febo.com
Subject: [time-nuts
it is
physically practical to do so, of course.
From Tom Holmes, N8ZM
> On Jul 11, 2022, at 8:49 AM, skipp Isaham via time-nuts
> wrote:
>
> Hello to the Group,
>
> I'd like to get some opinions and war stories regarding GPS reliability at
> high RF level and elevation locati
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