Hi, Does anyone have a good Rb lamp available for an Efratom FRK?
Doug K6JEY (drzarko...@yahoo.com)
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Just in case you weren't aware, bad lamps can often be
resurrected by the judicious application of heat. The idea
is to heat the bulb enough to evaporate all of the Rb
that is deposited on the glass (making it black), and then
let the lamp cool. The Rb will again condense out on the
glass, but
Exactly lets face it someone at Gmail screwed up or there was a serious
attack.
I also noticed my inbox was pretty thin. Now this morning its more normal.
The issue has run longer then a few days as this is the tread that I
started to notice something funny on.
Regards
Paul
WB8TSL
On Thu, Jun
On Fri, Jun 20, 2014 at 9:04 AM, paul swed paulsw...@gmail.com wrote:
someone at Gmail screwed up or there was a serious
attack.
https://help.yahoo.com/kb/email-service-providers-send-yahoo-addresses-sln24016.html
ditto AOL
This is what Yahoo and AOL want to happen. If you don't like their
Chuck is correct I have done this trick on FRS units. The glass clears and
the lamp re-ignites and continues to work for a long time. Actually it
hasn't failed and this must be 2 years now.
Regards
Paul
WB8TSL
On Fri, Jun 20, 2014 at 8:34 AM, Chuck Harris cfhar...@erols.com wrote:
Just in case
Hi Ernie, Jason, (also Hal, Chris),
I'm able to get NMEA and 1PPS out of the Fastrax/iTrax130 board now.
Before I sink any more time into this project, have any of you made 1PPS
measurements?
Compared to ublox, using the same antenna, these units take tens of minutes or
even hours to lock.
First getting 1 E-13 per second accuracy is not possible with a FE5680
because of tuning steps of 6.8 E-13. Even 1 E-12 may not be possible.
Bert,
I'm pretty sure the short-term noise of Rb standards like FE5680 is
significantly greater than the DAC resolution in your case. See the ADEV
paul swed paulswedb@... writes:
Chuck is correct I have done this trick on FRS units. The glass clears and
the lamp re-ignites and continues to work for a long time. Actually it
hasn't failed and this must be 2 years now.
Regards
Paul
WB8TSL
On Fri, Jun 20, 2014 at 8:34 AM, Chuck
OK so the scientific method. NOT.
The FRKs are nice in that you can get to the pellet pretty easily from the
posts I have seen on time-nuts. The FRS you have to break a glass cover.
Much like a very thin microscope cover slide. No way to fix that and I am
sure it matters only it doesn't seem to.
Once I got my TIC going, I suppose it was inevitable that I build a GPSDO with
a dsPIC33. I have a few dsPIC specific questions for anyone who designs with
them.
1. VCAP. The datasheet says that it should be a surface mount device. I had
hoped to avoid those. Can I get away with a 10uf
Question: Where is the source code for this project? I hunted through
this thread but I was not able to find a link.
Also, that service linked to below is the best price I've seen. 99 cents
each.
On Wed, Jun 18, 2014 at 11:06 PM, David Hopkins dav...@bigpond.net.au
wrote:
The service is
Dear group,
unfortunately I have to deliver the sad news that Ulrich Bangert, DF6JB
passed away on 11/06, aged 59.
Best regards,
Hartmut DL1YDD
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Wow,
that's a shock.
He was such a nice guy, always supporting requests for changes etc. Very
sad. He was quite young as well!
Our condolences to his wife and family.
Said
In a message dated 6/20/2014 13:58:36 Pacific Daylight Time,
timen...@paesler.de writes:
Dear group,
Hartmut,
I did not know this and thank you for sharing.
I have read many of his articles and posts, he had a global reach.
Regards
Paul
WB8TSL
On Fri, Jun 20, 2014 at 4:52 PM, Hartmut Paesler timen...@paesler.de
wrote:
Dear group,
unfortunately I have to deliver the sad news that Ulrich
Hi:
That's unfortunate, he made a large contribution to Time Nuts and by extension
to many.
Because I've been studying diet and nutrition for the past few months can
someone tell me why he died?
I believe that the low fat diet that the U.S. has promoted and which has spread world wide is
Paul's description is spot on.
A few of things to note:
1) The melting point of Rb is 39C (100F), so it
doesn't take a lot of heat to melt it... but it needs
to evaporate, which takes a little more. Basically,
once it melts, the amount of Rb that can be made a gas
depends on the pressure in
Hi Hartmut,
Thanks for letting us know. Ulrich has been on this mailing list since the
early days. He is one of several with his own web site (www.ulrich-bangert.de)
and freely shared his designs, articles, and software tools with the world. He
was a quality contributor to the list, and many
Maybe... maybe not. Some of the Rb's store the tuning word in the processor
EEPROM and those have a rather limited number of write cycles.
You can change the DDS tuning words almost as many times per minute or per
second as you wish to achieve the desired average accuracy.
This is indeed terrible to hear. Ulrich's free software contributions were
not only valuable in my work but useful to a lot of other people with test
gear. He was also one of my first customers, putting a lot of faith in a
guy he'd never met who was selling PN analyzers out of his basement in
I think the user FE5680 manual says you can change the tuning word as much
as you like. But changing the EEPROM is different, that is used on power
up. In a GPSDO you would likely want to send a command over the serial
interface when you need to make a change but you would only write to the
I can't claim it's 100%, but all the ones I've seen that had the FEI logo
and the address silk-screened onto the metal case and a single adhesive
label with the serial number have been the old ones. The new units have
two adhesive labels and no screen printing. Note that this only seems to
work
In message 53a49f22.5060...@paesler.de, Hartmut Paesler writes:
unfortunately I have to deliver the sad news that Ulrich Bangert, DF6JB
passed away on 11/06, aged 59.
He made the world a better place.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP
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