Thinking outside the box a super reference
There is at least one recent thesis where a dual resonance rubidium vapor cell was built and used to lock a low noise OCXO,The machining of the cavity didnt appear particularly challenging nor did the locking of the laser to the relevant wavelength using an auxiliary rubidium vapour cell.IIRC thee performance was better than the telecom market rubidium standards.
Bruce
On Friday, 4 November 2016 11:34 AM, Attila Kinali <attila@kinali.ch> wrote:
On Thu, 3 Nov 2016 16:54:24 -0400
Bob Camp kb8tq@n1k.org wrote:
If you look at a modern CPU as “just a handful of sand and some stuff”, it seems
pretty easy to build one in the kitchen after an hour or two of setup. When you dig
into the nasty details the line costs rapidly spiral off into the stratosphere. Atomic
standards are not quite as complex, but there still is more than just a little custom
equipment involved. $1M sounds a bit on the low side of what it might take.
Not necessarily. There is a large corpus of knowledge available on
how to build vapor cells standards and what is a good idea and what
isn't. Most of it is documented in papers of the PTTI, EFTF and IFCS.
The former two are freely available (for PTTI until 2010, but that
should be good enough). Getting access to those papers behind a
paywall, you only need to know someone with access to a university.
(not for PTTI post 2010 though, ION has quite anal access rules)
Additionally, the people in the time and frequeny community are very
open to discussion and exchange of knowledge. You can almost always
just walk up to someone and ask questions with a high chance of getting
not only answers but help in how to proceede.
Tapping into this knowhow would avoid the need to try out the whole
solution space and concentrate on the few parts that are unkown or
not well enough understood and optimize those. And by doing so safe
a lot of money.
Attila Kinali
--
Malek's Law:
Any simple idea will be worded in the most complicated way.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
Hi
Not many people have had exposure to Rb’s or Cs standards actually being
built. That leaves a major gap in who you can call when you run into a problem.
Until you have tried to build one it’s not at all clear just how much “missing information” there
is in all those papers. It’s very much like the semiconductor business. Lots of
information is published. There are indeed lots of gaps. At some point you must
build tooling and get it all working.
Again, we are talking about a device that is at least as good as a 5065 and not
something that just barely works. If you could build something better than a 5065
for a thousand or two dollars, it would be on the market today.
Bob
On Nov 3, 2016, at 6:34 PM, Attila Kinali attila@kinali.ch wrote:
On Thu, 3 Nov 2016 16:54:24 -0400
Bob Camp kb8tq@n1k.org wrote:
If you look at a modern CPU as “just a handful of sand and some stuff”, it seems
pretty easy to build one in the kitchen after an hour or two of setup. When you dig
into the nasty details the line costs rapidly spiral off into the stratosphere. Atomic
standards are not quite as complex, but there still is more than just a little custom
equipment involved. $1M sounds a bit on the low side of what it might take.
Not necessarily. There is a large corpus of knowledge available on
how to build vapor cells standards and what is a good idea and what
isn't. Most of it is documented in papers of the PTTI, EFTF and IFCS.
The former two are freely available (for PTTI until 2010, but that
should be good enough). Getting access to those papers behind a
paywall, you only need to know someone with access to a university.
(not for PTTI post 2010 though, ION has quite anal access rules)
Additionally, the people in the time and frequeny community are very
open to discussion and exchange of knowledge. You can almost always
just walk up to someone and ask questions with a high chance of getting
not only answers but help in how to proceede.
Tapping into this knowhow would avoid the need to try out the whole
solution space and concentrate on the few parts that are unkown or
not well enough understood and optimize those. And by doing so safe
a lot of money.
Attila Kinali
--
Malek's Law:
Any simple idea will be worded in the most complicated way.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
Attached graph indicates ADEV achieved with a 25mm double resonance Rb vapour cell
Performance appears somewhat better than HP5065A (even Corby's souped up version).
The thesis (by Thejesh N. Bandi) on this double resonance Rubidium vapour cell in a Magnetron style cavity was completed at the University of Neuchatel.
Bruce
On Friday, 4 November 2016 11:58 AM, Bruce Griffiths <bruce.griffiths@xtra.co.nz> wrote:
There is at least one recent thesis where a dual resonance rubidium vapor cell was built and used to lock a low noise OCXO,The machining of the cavity didnt appear particularly challenging nor did the locking of the laser to the relevant wavelength using an auxiliary rubidium vapour cell.IIRC thee performance was better than the telecom market rubidium standards.
Bruce
On Friday, 4 November 2016 11:34 AM, Attila Kinali attila@kinali.ch wrote:
On Thu, 3 Nov 2016 16:54:24 -0400
Bob Camp kb8tq@n1k.org wrote:
If you look at a modern CPU as “just a handful of sand and some stuff”, it seems
pretty easy to build one in the kitchen after an hour or two of setup. When you dig
into the nasty details the line costs rapidly spiral off into the stratosphere. Atomic
standards are not quite as complex, but there still is more than just a little custom
equipment involved. $1M sounds a bit on the low side of what it might take.
Not necessarily. There is a large corpus of knowledge available on
how to build vapor cells standards and what is a good idea and what
isn't. Most of it is documented in papers of the PTTI, EFTF and IFCS.
The former two are freely available (for PTTI until 2010, but that
should be good enough). Getting access to those papers behind a
paywall, you only need to know someone with access to a university.
(not for PTTI post 2010 though, ION has quite anal access rules)
Additionally, the people in the time and frequeny community are very
open to discussion and exchange of knowledge. You can almost always
just walk up to someone and ask questions with a high chance of getting
not only answers but help in how to proceede.
Tapping into this knowhow would avoid the need to try out the whole
solution space and concentrate on the few parts that are unkown or
not well enough understood and optimize those. And by doing so safe
a lot of money.
Attila Kinali
--
Malek's Law:
Any simple idea will be worded in the most complicated way.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
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and follow the instructions there.
Hi
Do you believe that they could produced in volume for < $1,000 each without
any significant setup investment?
Bob
On Nov 3, 2016, at 7:52 PM, Bruce Griffiths bruce.griffiths@xtra.co.nz wrote:
Attached graph indicates ADEV achieved with a 25mm double resonance Rb vapour cell
Performance appears somewhat better than HP5065A (even Corby's souped up version).
The thesis (by Thejesh N. Bandi) on this double resonance Rubidium vapour cell in a Magnetron style cavity was completed at the University of Neuchatel.
Bruce
On Friday, 4 November 2016 11:58 AM, Bruce Griffiths <bruce.griffiths@xtra.co.nz> wrote:
There is at least one recent thesis where a dual resonance rubidium vapor cell was built and used to lock a low noise OCXO,The machining of the cavity didnt appear particularly challenging nor did the locking of the laser to the relevant wavelength using an auxiliary rubidium vapour cell.IIRC thee performance was better than the telecom market rubidium standards.
Bruce
On Friday, 4 November 2016 11:34 AM, Attila Kinali <attila@kinali.ch> wrote:
On Thu, 3 Nov 2016 16:54:24 -0400
Bob Camp kb8tq@n1k.org wrote:
If you look at a modern CPU as “just a handful of sand and some stuff”, it seems
pretty easy to build one in the kitchen after an hour or two of setup. When you dig
into the nasty details the line costs rapidly spiral off into the stratosphere. Atomic
standards are not quite as complex, but there still is more than just a little custom
equipment involved. $1M sounds a bit on the low side of what it might take.
Not necessarily. There is a large corpus of knowledge available on
how to build vapor cells standards and what is a good idea and what
isn't. Most of it is documented in papers of the PTTI, EFTF and IFCS.
The former two are freely available (for PTTI until 2010, but that
should be good enough). Getting access to those papers behind a
paywall, you only need to know someone with access to a university.
(not for PTTI post 2010 though, ION has quite anal access rules)
Additionally, the people in the time and frequeny community are very
open to discussion and exchange of knowledge. You can almost always
just walk up to someone and ask questions with a high chance of getting
not only answers but help in how to proceede.
Tapping into this knowhow would avoid the need to try out the whole
solution space and concentrate on the few parts that are unkown or
not well enough understood and optimize those. And by doing so safe
a lot of money.
Attila Kinali
--
Malek's Law:
Any simple idea will be worded in the most complicated way.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
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<ADEV_25mmDRRb.GIF>_______________________________________________
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and follow the instructions there.
It would obviously be larger than a homebrew Cs, but why not a homebrew
Hydrogen Maser Frequency standard?
The commercial Cs units always seemed objects of pure miniaturized hi-tech
materials science magic, while the Hydrogen Masers I've seen seem much
larger-scale\ and more a matter of vacuum plumbing. Obviously the materials
cost for the copper microwave cavity will be very large, and I'm sure
Teflon-coating a quartz chamber is an art, but the pumps and magnets are
very familiar from my years in grad school working with plasma kettles and
mass spectrometers.
Tim N3QE
On Thu, Nov 3, 2016 at 4:07 PM, Bert Kehren via time-nuts <
time-nuts@febo.com> wrote:
Over the past there has been talk about building from scratch high
performance references. I think consensus was that it is out of reach. In
the mean
time Corby is reworking an active maser which takes a lot of know how. But
let us look at his work on the super HP5065. It is able to outperform a
passive maser in the below 100 second range! Long term a proper GPSDO
should
be possible to step in. We are working on it including pressure and
temperature control. To make full use of it you also need to have the
capability
to monitor, record and analyze on a continuous basis preferably with out
tying up expensive equipment. We have the pieces in place and looking
forward
of combining all the pieces and compare with Corby’s active Maser. We are
back to the GPSDO after being distracted by Tbolt performance. A third
party
is working combining the GPSDO data stream with the data from the unit
that
generates frequency, pressure and temperature data along with time to a
USB stick, while also be able to monitor with a PC.
I know it is considered by some heresy but our lack of a Maser and in
Juerg
’s case no access to one, we try to overcome it with a GPSDO tailored for
Rb and Cs and control our Cs’s C field .
There was a time that I did have a HP5065A but got rid of it when I got
some Cs’s. My best counter was A HP5345 and even with a Tracor 527 1
second
performance was not an issue. That changed when Corby introduced me to
time
nuts and frankly it was the first time I learned about ADEV. But the
HP5065A was gone. Now I have a cell that Corby has plotted and time
permitting
may become a project.
Let me get to the real issue. There are not enough HP5065A’s out there and
not affordable for all time nuts. Most are being kept and are not for
sale. But if a combined effort by many time nuts it MAY be possible to
recreate
the guts of the HP5065A. The key word is MAY. 200 time nuts be willing to
invest $ 5000 each may get us there. The market does not justify such an
effort but time nuts keep bringing up discussions. All the other ideas
kicked
around in the past will cost more. There are some among us that know what
it cost and who can make the key elements like lamps, cells, filters etc.
Just a thought outside the box and hopefully may turn in to a limited
constructive dialog. We will continue on our path, which include
FRK/M100, HP5065
and Cs.
We would not be capable to contribute technically on the physics package
but I would be willing to contribute financially and with monitoring
equipment even if I would not be around when finished.
Bert Kehren
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
Hi
Ok, how many full performance Hydrogen Masers can you build (size is not an issue) and
deliver for < $10,000 (2X Bert’s number) ?
Bob
On Nov 3, 2016, at 8:55 PM, Tim Shoppa tshoppa@gmail.com wrote:
It would obviously be larger than a homebrew Cs, but why not a homebrew
Hydrogen Maser Frequency standard?
The commercial Cs units always seemed objects of pure miniaturized hi-tech
materials science magic, while the Hydrogen Masers I've seen seem much
larger-scale\ and more a matter of vacuum plumbing. Obviously the materials
cost for the copper microwave cavity will be very large, and I'm sure
Teflon-coating a quartz chamber is an art, but the pumps and magnets are
very familiar from my years in grad school working with plasma kettles and
mass spectrometers.
Tim N3QE
On Thu, Nov 3, 2016 at 4:07 PM, Bert Kehren via time-nuts <
time-nuts@febo.com> wrote:
Over the past there has been talk about building from scratch high
performance references. I think consensus was that it is out of reach. In
the mean
time Corby is reworking an active maser which takes a lot of know how. But
let us look at his work on the super HP5065. It is able to outperform a
passive maser in the below 100 second range! Long term a proper GPSDO
should
be possible to step in. We are working on it including pressure and
temperature control. To make full use of it you also need to have the
capability
to monitor, record and analyze on a continuous basis preferably with out
tying up expensive equipment. We have the pieces in place and looking
forward
of combining all the pieces and compare with Corby’s active Maser. We are
back to the GPSDO after being distracted by Tbolt performance. A third
party
is working combining the GPSDO data stream with the data from the unit
that
generates frequency, pressure and temperature data along with time to a
USB stick, while also be able to monitor with a PC.
I know it is considered by some heresy but our lack of a Maser and in
Juerg
’s case no access to one, we try to overcome it with a GPSDO tailored for
Rb and Cs and control our Cs’s C field .
There was a time that I did have a HP5065A but got rid of it when I got
some Cs’s. My best counter was A HP5345 and even with a Tracor 527 1
second
performance was not an issue. That changed when Corby introduced me to
time
nuts and frankly it was the first time I learned about ADEV. But the
HP5065A was gone. Now I have a cell that Corby has plotted and time
permitting
may become a project.
Let me get to the real issue. There are not enough HP5065A’s out there and
not affordable for all time nuts. Most are being kept and are not for
sale. But if a combined effort by many time nuts it MAY be possible to
recreate
the guts of the HP5065A. The key word is MAY. 200 time nuts be willing to
invest $ 5000 each may get us there. The market does not justify such an
effort but time nuts keep bringing up discussions. All the other ideas
kicked
around in the past will cost more. There are some among us that know what
it cost and who can make the key elements like lamps, cells, filters etc.
Just a thought outside the box and hopefully may turn in to a limited
constructive dialog. We will continue on our path, which include
FRK/M100, HP5065
and Cs.
We would not be capable to contribute technically on the physics package
but I would be willing to contribute financially and with monitoring
equipment even if I would not be around when finished.
Bert Kehren
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
Zero. But the answer is also zero for a Rb or Cs cell!
On Thu, Nov 3, 2016 at 8:59 PM, Bob Camp kb8tq@n1k.org wrote:
Hi
Ok, how many full performance Hydrogen Masers can you build (size is not
an issue) and
deliver for < $10,000 (2X Bert’s number) ?
Bob
On Nov 3, 2016, at 8:55 PM, Tim Shoppa tshoppa@gmail.com wrote:
It would obviously be larger than a homebrew Cs, but why not a homebrew
Hydrogen Maser Frequency standard?
The commercial Cs units always seemed objects of pure miniaturized
hi-tech
materials science magic, while the Hydrogen Masers I've seen seem much
larger-scale\ and more a matter of vacuum plumbing. Obviously the
materials
cost for the copper microwave cavity will be very large, and I'm sure
Teflon-coating a quartz chamber is an art, but the pumps and magnets are
very familiar from my years in grad school working with plasma kettles
and
mass spectrometers.
Tim N3QE
On Thu, Nov 3, 2016 at 4:07 PM, Bert Kehren via time-nuts <
time-nuts@febo.com> wrote:
Over the past there has been talk about building from scratch high
performance references. I think consensus was that it is out of reach.
In
the mean
time Corby is reworking an active maser which takes a lot of know how.
But
let us look at his work on the super HP5065. It is able to outperform a
passive maser in the below 100 second range! Long term a proper GPSDO
should
be possible to step in. We are working on it including pressure and
temperature control. To make full use of it you also need to have the
capability
to monitor, record and analyze on a continuous basis preferably with out
tying up expensive equipment. We have the pieces in place and looking
forward
of combining all the pieces and compare with Corby’s active Maser. We
are
back to the GPSDO after being distracted by Tbolt performance. A third
party
is working combining the GPSDO data stream with the data from the unit
that
generates frequency, pressure and temperature data along with time to a
USB stick, while also be able to monitor with a PC.
I know it is considered by some heresy but our lack of a Maser and in
Juerg
’s case no access to one, we try to overcome it with a GPSDO tailored
for
Rb and Cs and control our Cs’s C field .
There was a time that I did have a HP5065A but got rid of it when I got
some Cs’s. My best counter was A HP5345 and even with a Tracor 527 1
second
performance was not an issue. That changed when Corby introduced me to
time
nuts and frankly it was the first time I learned about ADEV. But the
HP5065A was gone. Now I have a cell that Corby has plotted and time
permitting
may become a project.
Let me get to the real issue. There are not enough HP5065A’s out there
and
not affordable for all time nuts. Most are being kept and are not for
sale. But if a combined effort by many time nuts it MAY be possible to
recreate
the guts of the HP5065A. The key word is MAY. 200 time nuts be willing
to
invest $ 5000 each may get us there. The market does not justify such
an
effort but time nuts keep bringing up discussions. All the other ideas
kicked
around in the past will cost more. There are some among us that know
what
it cost and who can make the key elements like lamps, cells, filters
etc.
Just a thought outside the box and hopefully may turn in to a limited
constructive dialog. We will continue on our path, which include
FRK/M100, HP5065
and Cs.
We would not be capable to contribute technically on the physics
package
but I would be willing to contribute financially and with monitoring
equipment even if I would not be around when finished.
Bert Kehren
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
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Suitable ECDL laser for Rb clock:https://www.sacher-laser.com/home/industrial-lasers/point_and_line_laser_module.html
the 784.8 nm version has 0.2nm of tuning range,
Bruce
On Friday, 4 November 2016 2:43 PM, Tim Shoppa <tshoppa@gmail.com> wrote:
Zero. But the answer is also zero for a Rb or Cs cell!
On Thu, Nov 3, 2016 at 8:59 PM, Bob Camp kb8tq@n1k.org wrote:
Hi
Ok, how many full performance Hydrogen Masers can you build (size is not
an issue) and
deliver for < $10,000 (2X Bert’s number) ?
Bob
On Nov 3, 2016, at 8:55 PM, Tim Shoppa tshoppa@gmail.com wrote:
It would obviously be larger than a homebrew Cs, but why not a homebrew
Hydrogen Maser Frequency standard?
The commercial Cs units always seemed objects of pure miniaturized
hi-tech
materials science magic, while the Hydrogen Masers I've seen seem much
larger-scale\ and more a matter of vacuum plumbing. Obviously the
materials
cost for the copper microwave cavity will be very large, and I'm sure
Teflon-coating a quartz chamber is an art, but the pumps and magnets are
very familiar from my years in grad school working with plasma kettles
and
mass spectrometers.
Tim N3QE
On Thu, Nov 3, 2016 at 4:07 PM, Bert Kehren via time-nuts <
time-nuts@febo.com> wrote:
Over the past there has been talk about building from scratch high
performance references. I think consensus was that it is out of reach.
In
the mean
time Corby is reworking an active maser which takes a lot of know how.
But
let us look at his work on the super HP5065. It is able to outperform a
passive maser in the below 100 second range! Long term a proper GPSDO
should
be possible to step in. We are working on it including pressure and
temperature control. To make full use of it you also need to have the
capability
to monitor, record and analyze on a continuous basis preferably with out
tying up expensive equipment. We have the pieces in place and looking
forward
of combining all the pieces and compare with Corby’s active Maser. We
are
back to the GPSDO after being distracted by Tbolt performance. A third
party
is working combining the GPSDO data stream with the data from the unit
that
generates frequency, pressure and temperature data along with time to a
USB stick, while also be able to monitor with a PC.
I know it is considered by some heresy but our lack of a Maser and in
Juerg
’s case no access to one, we try to overcome it with a GPSDO tailored
for
Rb and Cs and control our Cs’s C field .
There was a time that I did have a HP5065A but got rid of it when I got
some Cs’s. My best counter was A HP5345 and even with a Tracor 527 1
second
performance was not an issue. That changed when Corby introduced me to
time
nuts and frankly it was the first time I learned about ADEV. But the
HP5065A was gone. Now I have a cell that Corby has plotted and time
permitting
may become a project.
Let me get to the real issue. There are not enough HP5065A’s out there
and
not affordable for all time nuts. Most are being kept and are not for
sale. But if a combined effort by many time nuts it MAY be possible to
recreate
the guts of the HP5065A. The key word is MAY. 200 time nuts be willing
to
invest $ 5000 each may get us there. The market does not justify such
an
effort but time nuts keep bringing up discussions. All the other ideas
kicked
around in the past will cost more. There are some among us that know
what
it cost and who can make the key elements like lamps, cells, filters
etc.
Just a thought outside the box and hopefully may turn in to a limited
constructive dialog. We will continue on our path, which include
FRK/M100, HP5065
and Cs.
We would not be capable to contribute technically on the physics
package
but I would be willing to contribute financially and with monitoring
equipment even if I would not be around when finished.
Bert Kehren
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
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Will Lady Heather show the leap second using a thunderbolt?
chris
Hi Bert:
Have you looked into the Stanford Research PRS-10? It a current production Rb standard with internal provision to sync
to 1 PPS.
http://prc68.com/I/PRS10.shtml
You can choose to run it like a GPSDO but it needs an external 1 PPS for that (there is no GPS receiver in the PRS-10).
Or, you can time stamp an external 1 PPS.
The company was founded by a physicist and they hire mostly physicists rather than engineers. I like their stuff.
The crystal oscillator in the PRS-10 is the SC-10, also made by SR and comes in many flavors that among other things
trade off aging for stability. I assume you could order a custom PRS-10 with the desired crystal oscillator specs.
Before spending a lot of money you might want to experiment with the PRS-10 and the best currently available GNS timing
receiver.
I experimented with both hardware and software sawtooth correction and they both have pluses and minuses. I seem to
remember that CNS Systems had a sawtooth corrected GPS timing receiver that ran TAC32 software, but haven't kept up on it.
--
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
The lesser of evils is still evil.
-------- Original Message --------
Over the past there has been talk about building from scratch high
performance references. I think consensus was that it is out of reach. In the mean
time Corby is reworking an active maser which takes a lot of know how. But
let us look at his work on the super HP5065. It is able to outperform a
passive maser in the below 100 second range! Long term a proper GPSDO should
be possible to step in. We are working on it including pressure and
temperature control. To make full use of it you also need to have the capability
to monitor, record and analyze on a continuous basis preferably with out
tying up expensive equipment. We have the pieces in place and looking forward
of combining all the pieces and compare with Corby’s active Maser. We are
back to the GPSDO after being distracted by Tbolt performance. A third party
is working combining the GPSDO data stream with the data from the unit that
generates frequency, pressure and temperature data along with time to a
USB stick, while also be able to monitor with a PC.
I know it is considered by some heresy but our lack of a Maser and in Juerg
’s case no access to one, we try to overcome it with a GPSDO tailored for
Rb and Cs and control our Cs’s C field .
There was a time that I did have a HP5065A but got rid of it when I got
some Cs’s. My best counter was A HP5345 and even with a Tracor 527 1 second
performance was not an issue. That changed when Corby introduced me to time
nuts and frankly it was the first time I learned about ADEV. But the
HP5065A was gone. Now I have a cell that Corby has plotted and time permitting
may become a project.
Let me get to the real issue. There are not enough HP5065A’s out there and
not affordable for all time nuts. Most are being kept and are not for
sale. But if a combined effort by many time nuts it MAY be possible to recreate
the guts of the HP5065A. The key word is MAY. 200 time nuts be willing to
invest $ 5000 each may get us there. The market does not justify such an
effort but time nuts keep bringing up discussions. All the other ideas kicked
around in the past will cost more. There are some among us that know what
it cost and who can make the key elements like lamps, cells, filters etc.
Just a thought outside the box and hopefully may turn in to a limited
constructive dialog. We will continue on our path, which include FRK/M100, HP5065
and Cs.
We would not be capable to contribute technically on the physics package
but I would be willing to contribute financially and with monitoring
equipment even if I would not be around when finished.
Bert Kehren
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