, September 29, 2009 12:19 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Can anyone spare an LPRO lamp?
The lamp in the LPRO may have a significant difference from the other
lamps.
The pictures of lamps on Tom's ? page show that each of them has a
side arm
In message 602be75e324d4d31b5a2d7ab3ec79...@vectron.com, Bob Camp writes:
Hi
The exact fill in the lamp is one of those things the Efratom does not
like to talk about. Best guess is that there is more than just Rb in there.
It is no secret that buffer-gasses are used, but which they are is not
You can find out pretty easily with an optical spectrometer if you can get
a view of an operating lamp, either directly or via an optical fiber.
There are only about 5 possible fill gases and even a crude spectrometer
will identify which ones are there. Something capable of resolving lines
spaced
Hi,
back in the 80s I used a few different brands of HeNe laser.
Some had their windows cemented to the tube and the He could leak out.
The cure was to put the tube in a paper bag, point it at a power
meter, and
release the contents of a He party balloon into the bag. After 5 or
10 minutes
] On
Behalf Of Neville Michie
Sent: Tuesday, September 29, 2009 12:19 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Can anyone spare an LPRO lamp?
The lamp in the LPRO may have a significant difference from the other
lamps.
The pictures of lamps on Tom's
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Neville Michie
Sent: Tuesday, September 29, 2009 12:19 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Can anyone spare an LPRO lamp?
The lamp
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Can anyone spare an LPRO lamp?
The lamp in the LPRO may have a significant difference from the other
lamps.
The pictures of lamps on Tom's ? page show that each of them has a
side arm
which is most helpful for filling
Stanley Reynolds wrote:
hope my email client will not mess up the link:
www.n4iqt.com/efratom8084008/eeratom_model_frs_lamp_assembly_repair.pdf
I think the last paragraph is most interesting as it relates to the lamp
itself.
Cheers,
Magnus
___
Danielson mag...@rubidium.dyndns.org wrote:
From: Magnus Danielson mag...@rubidium.dyndns.org
Subject: Re: [time-nuts] Can anyone spare an LPRO lamp?
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Date: Monday, 28 September, 2009, 11:48 AM
Stanley Reynolds wrote
In message 731009.13735...@web27105.mail.ukl.yahoo.com, Robert Atkinson write
s:
I'd say the most interesting quote is:
[...]that causes failure to more then 99% of the 20 units[...]
I think my kinds math teacher would flunk that...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
] Can anyone spare an LPRO lamp?
I think my kinds math teacher would flunk that...
--
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
of precise time and frequency measurement
Subject: Re: [time-nuts] Can anyone spare an LPRO lamp?
I think my kinds math teacher would flunk that...
--
Javier HerreroEMAIL: jherr...@hvsistemas.com
HV
The lamp in the LPRO may have a significant difference from the other
lamps.
The pictures of lamps on Tom's ? page show that each of them has a
side arm
which is most helpful for filling.
The side arm is left out in the cold so any excess rubidium condenses
there
as a reserve supply. The
? :-)
Dave
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Poul-Henning Kamp
Sent: 28 September 2009 21:09
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Can anyone spare an LPRO lamp?
I think my kinds math
hope my email client will not mess up the link:
www.n4iqt.com/efratom8084008/eeratom_model_frs_lamp_assembly_repair.pdf
Stanley
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Hello time-nuts,
I have an LPRO-101 that won't lock, so popped the cover and started poking
around. The lamp was not lit, both physics packages were hot, and there was
RF going to the exciter coil. So, I pulled the lamp and swapped it with
another unit. The lamp from the good unit lit
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