On 5/8/07, Bill Hawkins bill@iaxs.net wrote:

If you're looking at virtual clocks, there's always
http://www.jwz.org/xdaliclock/

--
73 de Maggie K3XS
Editor, Phil-Mont Mobile Radio Club Blurb - http://www.phil-mont.org
Elecraft K2 #1641 -- AOPA 925383 -- ARRL 39280

Did I never told the group about my GPS nixie clock? ;-)

http://www.hvsistemas.es/en/otros.html

Regards,

Javier,  EA1CRB

Rob Kimberley escribió:

This was the web's first nixie clock...
http://www.leapsecond.com/java/nixie.htm

And who needs NTP when you drive a nixie with a cesium standard:
http://www.leapsecond.com/pages/atomic-nixie/

/tvb

Lol, as I was reading the posts I was thinking, "I bet Tom hooked one up to
his Maser"....

And sure enough the proof is in the pictures. ;)

You guys crack me up.

Jason

On 5/8/07, Jason Rabel jason@extremeoverclocking.com wrote:

Of course, a truly hard-core Nixie tube clock wouldn't use
semiconductors at all.

http://www.jogis-roehrenbude.de/Leserbriefe/Bruegmann-Digital-Roehren-Clock/Digital-Roehrenuhr.htm

(or http://tinyurl.com/3632h )

http://www.eldocountry.com/projects/tubeclock.html

--
73 de Maggie K3XS
Editor, Phil-Mont Mobile Radio Club Blurb - http://www.phil-mont.org
Elecraft K2 #1641 -- AOPA 925383 -- ARRL 39280

Ah, but I saw some glass semiconductor diodes in there!  Look about half way
down the page.  Could they be 1N914's?  (I don't do German)

Daun

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf
Of Maggie Leber
Sent: Tuesday, May 08, 2007 12:02 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] NTP Synchronised Nixie Tube Clock

On 5/8/07, Jason Rabel jason@extremeoverclocking.com wrote:

Of course, a truly hard-core Nixie tube clock wouldn't use
semiconductors at all.

http://www.jogis-roehrenbude.de/Leserbriefe/Bruegmann-Digital-Roehren-Clock/Digi
tal-Roehrenuhr.htm

(or http://tinyurl.com/3632h )

http://www.eldocountry.com/projects/tubeclock.html

--
73 de Maggie K3XS
Editor, Phil-Mont Mobile Radio Club Blurb - http://www.phil-mont.org
Elecraft K2 #1641 -- AOPA 925383 -- ARRL 39280

time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

Here's the evidence.

Daun

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf
Of Daun Yeagley
Sent: Tuesday, May 08, 2007 12:35 PM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] NTP Synchronised Nixie Tube Clock

Ah, but I saw some glass semiconductor diodes in there!  Look about half way
down the page.  Could they be 1N914's?  (I don't do German)

Daun

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On Behalf
Of Maggie Leber
Sent: Tuesday, May 08, 2007 12:02 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] NTP Synchronised Nixie Tube Clock

On 5/8/07, Jason Rabel jason@extremeoverclocking.com wrote:

Of course, a truly hard-core Nixie tube clock wouldn't use
semiconductors at all.

http://www.jogis-roehrenbude.de/Leserbriefe/Bruegmann-Digital-Roehren-Clock/Digi
tal-Roehrenuhr.htm

(or http://tinyurl.com/3632h )

http://www.eldocountry.com/projects/tubeclock.html

--
73 de Maggie K3XS
Editor, Phil-Mont Mobile Radio Club Blurb - http://www.phil-mont.org
Elecraft K2 #1641 -- AOPA 925383 -- ARRL 39280

time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

If you do a Google translate on the page, he actually states that there are
silicon diodes there.

Rob K

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Daun Yeagley
Sent: 08 May 2007 17:41
To: daun@yeagley.net; 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] NTP Synchronised Nixie Tube Clock

Here's the evidence.

Daun

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Daun Yeagley
Sent: Tuesday, May 08, 2007 12:35 PM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] NTP Synchronised Nixie Tube Clock

Ah, but I saw some glass semiconductor diodes in there!  Look about half way
down the page.  Could they be 1N914's?  (I don't do German)

Daun

-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Maggie Leber
Sent: Tuesday, May 08, 2007 12:02 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] NTP Synchronised Nixie Tube Clock

On 5/8/07, Jason Rabel jason@extremeoverclocking.com wrote:

Of course, a truly hard-core Nixie tube clock wouldn't use semiconductors at
all.

http://www.jogis-roehrenbude.de/Leserbriefe/Bruegmann-Digital-Roehren-Clock/
Digi
tal-Roehrenuhr.htm

(or http://tinyurl.com/3632h )

http://www.eldocountry.com/projects/tubeclock.html

--
73 de Maggie K3XS
Editor, Phil-Mont Mobile Radio Club Blurb - http://www.phil-mont.org
Elecraft K2 #1641 -- AOPA 925383 -- ARRL 39280

time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

Perhaps my "hard core" requirement should be restated as "no
transistors" rather than "no semiconductors". :-)

On 5/8/07, Rob Kimberley rk@timing-consultants.com wrote:

--
73 de Maggie K3XS
Editor, Phil-Mont Mobile Radio Club Blurb - http://www.phil-mont.org
Elecraft K2 #1641 -- AOPA 925383 -- ARRL 39280

Hello,
as I do not have problems with this strange lange, I hope I can help finding the answer ;-)
According the description, not having started with a ready overall design the developper Friedhelm Bruegmann did work 7 years on it!
He did start, because he had the idea to bring all his collected valves into practical use after a long period of collection.
A lot of appearing technical problems had to be solved then. Therefore it was not possible to have a clear idea about the power needed for this project, which finally gave him some headaches. Though theoretically
possible to avoid  all semiconductors totally, the transformers of choice turned out to be too small. As there are already 103 vacuum tubes in use, just the heater current levelled up to 39A! But, as at the time of digital
breakthrough semiconducter diodes were already in mixed use with VTs, Friedhelm did not see a breach of style to use SC-diodes. He applied 4xBY227, 66xBA157, 72x1N4148. All these parts are clearly shown in the
diagrams and mentioned in the description. I stopped thinking about the bigger size of chassis he would have needed.
Anyway, a outstanding development!

Beside, did ENIAC use any semiconducters?

The run-up you can watch here:
http://www.jogis-roehrenbude.de/Leserbriefe/Bruegmann-Digital-Roehren-Clock/mov002.zip
The set-back is shown here:
http://www.jogis-roehrenbude.de/Leserbriefe/Bruegmann-Digital-Roehren-Clock/mov003.zip
The total schematic:
http://www.jogis-roehrenbude.de/Leserbriefe/Bruegmann-Digital-Roehren-Clock/sheet001.pdf

greetings,

Arnold, DK2WT

On Tue, 8 May 2007 12:34:52 -0400, Daun Yeagley wrote:

On Tue, May 08, 2007 at 02:09:53PM -0400, Maggie Leber wrote:

In that case, I guess my clock also qualifies: it uses neon lamps
as its "active" components.
The only semiconductors used are simple diodes and two blue LEDs.

See http://wwwhome.cs.utwente.nl/~ptdeboer/ham/neonclock/ .

73, Pieter-Tjerk, PA3FWM

Yeah, if I did something like this:

http://www.eldocountry.com/projects/tubeclock/tube2lrg.jpg

There would be a large bonfire on my table! I'm amazed he didn't short
something out!

Jason

Well, mine is not NTP or GPS controlled (unless the PC is), but it has a
lot of bells and whistles :-)

http://www.ko4bb.com/ham_radio/Clock

(free download, no charge even for the bugs, er... unexpected features)

Didier KO4BB

Bill Hawkins wrote:

I find it humorous, that at the bottom of that page it says: "Last
Updated: January 1, 1970 GMT"

At 06:49 PM 5/8/2007, Didier Juges wrote...

It does sound funny. Unfortunately, it seems like it may be your
configuration.

The page uses Javascript to instruct the browser to fetch the document
updated time stamp. It seems like your browser does not handle
Javascript the way it's intended. The way it's supposed to work: the
Javascript instructs the browser to fetch the document's time stamp and
render it on the page. The browser is either ignoring the request and
putting some default value, or it does not fetch it properly and fails
to convert the date to a proper text string.

Try another browser, here it looks fine (the page was updated earlier today)

I use Firefox under XP Pro, I have not tried others.

Didier KO4BB

Mike S wrote:

No kidding.  That clock would be equally at home in "Blade Runner" or
"Triumph des Willens."

-- john, KE5FX