HP 105D FS
List,
Since I've been babysitting this unit for 20 years or so waiting for a-round-it to arrive its probably to to pass it on to someone who would revive it.
It is a 100KHz ovenized crystal with an external reading mercury thermometer. It has dividers down 100Hz and is equipped with a 2 inch scope for doing Lissajous comparisons. The input and outputs are the old style dual binder posts.
It's the usual test equipment width, about 10 inches high, and 18 inches deep. Weight is about 30 Lbs.
It's in fair cosmetic condition
I have the original HP manual for it.
If one is so inclined, there is interior space for a couple of HP 10811 oscillators, GPS unit and the associated PS for the modern stuff. IIRC I have a NOS CRT tube as well.
Or polish up the front panel, place it on a shelf to remember how far we've come.
Make me an offer. Shipping by FedEx is extra from 92220, Banning CA.
If interested please generate an original email so Yahoo doesn't stack the replies all in one file.
I'm sure the purchaser can be absolutely certain that they have the only one in their state, or even country :).
Regards,
Perrier
Hi
Are you sure you have the model number right? That does not sound like a 105D … The 105B was a 1960’s
creature that had a 5 MHz crystal in it already.
Bob (who probably has eight typos in the sentence above :)
On Apr 9, 2017, at 2:46 AM, Perry Sandeen via time-nuts time-nuts@febo.com wrote:
List,
Since I've been babysitting this unit for 20 years or so waiting for a-round-it to arrive its probably to to pass it on to someone who would revive it.
It is a 100KHz ovenized crystal with an external reading mercury thermometer. It has dividers down 100Hz and is equipped with a 2 inch scope for doing Lissajous comparisons. The input and outputs are the old style dual binder posts.
It's the usual test equipment width, about 10 inches high, and 18 inches deep. Weight is about 30 Lbs.
It's in fair cosmetic condition
I have the original HP manual for it.
If one is so inclined, there is interior space for a couple of HP 10811 oscillators, GPS unit and the associated PS for the modern stuff. IIRC I have a NOS CRT tube as well.
Or polish up the front panel, place it on a shelf to remember how far we've come.
Make me an offer. Shipping by FedEx is extra from 92220, Banning CA.
If interested please generate an original email so Yahoo doesn't stack the replies all in one file.
I'm sure the purchaser can be absolutely certain that they have the only one in their state, or even country :).
Regards,
Perrier
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.
Apologies to All,
Perrier should not post when tired.
The HP oscillator is a 100D Low Frequency Standard..
Sorry for the brain fart.
Regards,
Perrier
On Sunday, April 9, 2017 5:18 AM, Bob kb8tq <kb8tq@n1k.org> wrote:
Hi
Are you sure you have the model number right? That does not sound like a 105D … The 105B was a 1960’s
creature that had a 5 MHz crystal in it already.
Bob (who probably has eight typos in the sentence above :)
On Apr 9, 2017, at 2:46 AM, Perry Sandeen via time-nuts time-nuts@febo.com wrote:
List,
Since I've been babysitting this unit for 20 years or so waiting for a-round-it to arrive its probably to to pass it on to someone who would revive it.
It is a 100KHz ovenized crystal with an external reading mercury thermometer. It has dividers down 100Hz and is equipped with a 2 inch scope for doing Lissajous comparisons. The input and outputs are the old style dual binder posts.
It's the usual test equipment width, about 10 inches high, and 18 inches deep. Weight is about 30 Lbs.
It's in fair cosmetic condition
I have the original HP manual for it.
If one is so inclined, there is interior space for a couple of HP 10811 oscillators, GPS unit and the associated PS for the modern stuff. IIRC I have a NOS CRT tube as well.
Or polish up the front panel, place it on a shelf to remember how far we've come.
Make me an offer. Shipping by FedEx is extra from 92220, Banning CA.
If interested please generate an original email so Yahoo doesn't stack the replies all in one file.
I'm sure the purchaser can be absolutely certain that they have the only one in their state, or even country :).
Regards,
Perrier
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
For those who just have to read up on this beast:
http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1949-10.pdf http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1949-10.pdf
Has all of the details as of it’s introduction in 1949. When new it sold for $600.
That would not quite have bought you a new car back then, but it was still a lot of money.
Bob
On Apr 9, 2017, at 1:35 PM, Perry Sandeen sandeenpa@yahoo.com wrote:
Apologies to All,
Perrier should not post when tired.
The HP oscillator is a 100D Low Frequency Standard..
Sorry for the brain fart.
Regards,
Perrier
On Sunday, April 9, 2017 5:18 AM, Bob kb8tq kb8tq@n1k.org wrote:
Hi
Are you sure you have the model number right? That does not sound like a 105D … The 105B was a 1960’s
creature that had a 5 MHz crystal in it already.
Bob (who probably has eight typos in the sentence above :)
On Apr 9, 2017, at 2:46 AM, Perry Sandeen via time-nuts <time-nuts@febo.com mailto:time-nuts@febo.com> wrote:
List,
Since I've been babysitting this unit for 20 years or so waiting for a-round-it to arrive its probably to to pass it on to someone who would revive it.
It is a 100KHz ovenized crystal with an external reading mercury thermometer. It has dividers down 100Hz and is equipped with a 2 inch scope for doing Lissajous comparisons. The input and outputs are the old style dual binder posts.
It's the usual test equipment width, about 10 inches high, and 18 inches deep. Weight is about 30 Lbs.
It's in fair cosmetic condition
I have the original HP manual for it.
If one is so inclined, there is interior space for a couple of HP 10811 oscillators, GPS unit and the associated PS for the modern stuff. IIRC I have a NOS CRT tube as well.
Or polish up the front panel, place it on a shelf to remember how far we've come.
Make me an offer. Shipping by FedEx is extra from 92220, Banning CA.
If interested please generate an original email so Yahoo doesn't stack the replies all in one file.
I'm sure the purchaser can be absolutely certain that they have the only one in their state, or even country :).
Regards,
Perrier
time-nuts mailing list -- time-nuts@febo.com mailto:time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
Perry wrote:
The HP oscillator is a 100D Low Frequency Standard..
Sorry for the brain fart.
For a bit more information on the 100D (and 100C), see the October, 1949
Hewlett Packard Journal:
http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1949-10.pdf
Note the accuracy and stability specs:
ACCURACY: Average stability is within approximately two parts per
million per week.
STABILITY: Within one part per million over short time intervals, such
as required to make a measurement.
The price in 1949 was $600 f.o.b. Palo Alto.
Best regards,
Charles
I'm sure the purchaser can be absolutely certain that they have the only one in their state, or even country :).
Hi Perrier,
It's not that rare. The vintage hp standard with the 'scope (Lissajous), mercury thermometer, and dividers is the model 100D or 100E. The full range of models 100A to 100E show up on eBay now and then, such as:
http://www.ebay.com/itm/172415409793 hp 100C
http://www.ebay.com/itm/192098135503 hp 100E
There's a photo of a 100E (a rack-mount, ER model) at: http://leapsecond.com/hpclocks/
/tvb
HI
If you take a look at the schematic of the oscillator circuit shown in the HP
Journal article, it is the standard circuit that is used in just about every
microprocessor clock and clock oscillator made (except for the vacuum tube …)
No, it’s not the earliest example, but it is pretty early by my standards ( = it’s older
than I am :)
Bob
On Apr 9, 2017, at 3:04 PM, Charles Steinmetz csteinmetz@yandex.com wrote:
Perry wrote:
The HP oscillator is a 100D Low Frequency Standard..
Sorry for the brain fart.
For a bit more information on the 100D (and 100C), see the October, 1949 Hewlett Packard Journal:
http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1949-10.pdf
Note the accuracy and stability specs:
ACCURACY: Average stability is within approximately two parts per million per week.
STABILITY: Within one part per million over short time intervals, such as required to make a measurement.
The price in 1949 was $600 f.o.b. Palo Alto.
Best regards,
Charles
time-nuts mailing list -- time-nuts@febo.com
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and follow the instructions there.
Up through and including the 101A, only the crystal was ovenized; the
oscillator itself was not temperature controlled other than via the
environment in which it lived. Given that the 100 series was mostly vacuum
tubes, that is understandable. I was a little surprised to discover that
the solid-state 101A had only the crystal in its oven and, in fact, its
specs are no better than the vacuum-tube 100E. Later models moved more and
more stuff into the oven and the specs got better.
Jeremy
On Sun, Apr 9, 2017 at 1:02 PM Charles Steinmetz csteinmetz@yandex.com
wrote:
Perry wrote:
The HP oscillator is a 100D Low Frequency Standard..
Sorry for the brain fart.
For a bit more information on the 100D (and 100C), see the October, 1949
Hewlett Packard Journal:
http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1949-10.pdf
Note the accuracy and stability specs:
ACCURACY: Average stability is within approximately two parts per
million per week.
STABILITY: Within one part per million over short time intervals, such
as required to make a measurement.
The price in 1949 was $600 f.o.b. Palo Alto.
Best regards,
Charles
time-nuts mailing list -- time-nuts@febo.com
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https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
--
Sent from Gmail Mobile
Hi
The “heated crystal” approach was pretty common up until the 1970’s. Both GR
and HP moved over to "electronics in the oven” at about the same time(early 60’s) for rack mount
standards. There are a few tube based OCXO’s with heated electronics. Some of them
date to the 1960’s others appear to date earlier than that. The 5 MHz 3rd overtone
crystal dates to the early 1950’s and it certainly was used in standard applications
in that era.
Bob
On Apr 9, 2017, at 7:20 PM, Jeremy Nichols jn6wfo@gmail.com wrote:
Up through and including the 101A, only the crystal was ovenized; the
oscillator itself was not temperature controlled other than via the
environment in which it lived. Given that the 100 series was mostly vacuum
tubes, that is understandable. I was a little surprised to discover that
the solid-state 101A had only the crystal in its oven and, in fact, its
specs are no better than the vacuum-tube 100E. Later models moved more and
more stuff into the oven and the specs got better.
Jeremy
On Sun, Apr 9, 2017 at 1:02 PM Charles Steinmetz csteinmetz@yandex.com
wrote:
Perry wrote:
The HP oscillator is a 100D Low Frequency Standard..
Sorry for the brain fart.
For a bit more information on the 100D (and 100C), see the October, 1949
Hewlett Packard Journal:
http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1949-10.pdf
Note the accuracy and stability specs:
ACCURACY: Average stability is within approximately two parts per
million per week.
STABILITY: Within one part per million over short time intervals, such
as required to make a measurement.
The price in 1949 was $600 f.o.b. Palo Alto.
Best regards,
Charles
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.
--
Sent from Gmail Mobile
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