Thanks. Bert
In a message dated 4/27/2009 11:07:46 A.M. Eastern Daylight Time,
r...@timing-consultants.com writes:
I recently cleared out all my old manuals (including many 1295D manuals).
I
know for sure that the ones you mention here were amongst them. They went
to
Ron Smith here in
Do you know what the Power supply problem is. I have spares. Bert Miami
In a message dated 4/11/2009 9:10:11 A.M. Eastern Daylight Time,
j...@febo.com writes:
I think the (retrofitted FTS) tube in my nice, later production, 5061A
Cs died. I have an FTS-4000 unit with a power supply
Do you have a picture of the unit and of the guts? Bert Kehren Miami
In a message dated 4/10/2009 8:17:13 A.M. Eastern Daylight Time,
ik1...@spin-it.com writes:
Hello,
I got a broken RohdeSchwarz XSD-2 crystal oscillator module, type
283.6010.02 .
By first, has anyone a schematic for
My email is _ewkeh...@aol.com_ (mailto:ewkeh...@aol.com) Bert
In a message dated 4/10/2009 2:36:44 P.M. Eastern Daylight Time,
ik1...@spin-it.com writes:
At 20.23 10/04/2009, you wrote:
Do you have a picture of the unit and of the guts? Bert Kehren Miami
I will take some pics and send
Thank you Bruce for your valuable insight. In the past I did spend time on
Cesium Standards and with valuable inputs from Corby concerning the FTS tube
interface I converted a HP 5062C to a Standard using a FTS tube. I also made
other changes like changing to a 10 MHz 10811, the Master Clock
Sorry Dave, as I said I am new to the site and am not aware of your work.
Would you please supply me with the link so I can take a look. If the job is
done why all the conversation? Bert
In a message dated 4/5/2009 11:57:33 A.M. Eastern Daylight Time,
david.partri...@dsl.pipex.com
Having built eight of Brooks units, my experience was that the problem was
not with the amplifier but the way the RS F/F in the phase comparator II was
working in some of the devices. For me they all worked in the oscillator input
but some brands did not work properly with the GPS input.
Bruce, thank you for the info. I have never had the need or desire to get 1
ps accuracy however in designing low noise signal sources I have always had to
battle reference oscillator noise and was often nor sure if it was the
oscillator or the input circuit. However I would like to see a
Skip, where are you located. Since I have always gotten my manuals back I
will be glad to send it to you if you do not find an electronic one. Bert
Kehren
Miami
In a message dated 4/3/2009 4:15:04 P.M. Eastern Daylight Time,
cfhar...@erols.com writes:
Try PRC68.com
Skip Withrow
No, you can never improve on what you start out with, I would just eliminate
the jitter you may get with the 90's. I would use a 74xx74 because it clocks
on the positive edge, the 90's on the negative edge. Looking at Jameco you
can get 74xx74 in DIL any where from F to HC. I would not use
In my opinion the best way is still to use two 74xx90 connected divide by
five and divide by two. That gives a symmetrical output. That is why you can
not
use a 390. The A output should subsequently be applied to a D or JK flip
flop with the clock input connected to the 10 MHz. The D or JK
Being of a generation when these were common I have a few. If you agree to
pay for shipping by putting the proper amount in US $ in an envelop once you
receive it, I will gladly ship you one. You can contact me at
_ewkeh...@aol.com_ (mailto:ewkeh...@aol.com)Bert Kehren Miami
In a
Checked USPS should be about $ 2 Bert
In a message dated 3/12/2009 9:02:59 A.M. Eastern Daylight Time,
ewkeh...@aol.com writes:
Being of a generation when these were common I have a few. If you agree to
pay for shipping by putting the proper amount in US $ in an envelop once you
Please add me to the list. Bert Kehren Miami WB5MZJ
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Depending where you are most homes have sewer vents. I have used this
repeatedly in the US and in Germany. This is a PVC pipe going through the roof
and
normally well sealed by the roofer, but open on the top. In the past Radio
Shack had pipe to pipe clamps the pair for less than $10. You
Sorry I cannot help. If you look at the publication dates it seams to me
that the E is a replacement for the B with slightly relaxed specification. Bert
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I have option E but am only aware of E and A. My manual does not refer to an
option B. What would you like to know specifically? Bert in Miami
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Esa, the answer to your problem is, as I said before, to clean up the
signal, use a high quality oscillator locked to your system with a PLL that
has
the appropriate time constant. The time constant will smooth out the jumps you
see right now. The question is only which oscillator. A
Esa, once you have a finite plan I am sure we can get it to you. I have
regular visitors coming from Germany and I could ask them to take it back and
ship it from Germany. My cousins son is here till Febr. 18 and could take it.
Miami is in the winter a very popular place. Today it will be 25
I know what that is all about I did spend my young days in Halmstad Sweden.
I will get a 10544 and we can communicate direct. My Email is
_ewkeh...@aol.com_ (mailto:ewkeh...@aol.com) Bert
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I think it is a bad idea except if holdover due to loss of GPS is an issue.
For all practical purposes disciplined oscillators make rubidium obsolete
because the majority use lower performance cheaper oscillators in their
systems.
Looking at Corby Dawson's data on oscillators and HP 5065
Its main purpose was time synchronization. Bert
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Sorry, I offended you Bruce. True time and frequency are definitely inter
related, but as you and Esa pointed out the Trimble has an output that does
change under certain circumstances. And the reason Esa is pursuing his approach
is that for his need as a frequency standard the unit is not
Esa, I would do a clean up using an oscillator like a HP 10811 and use the
rubidium to check if you do have an improvement. Right now you have no way of
knowing what you are getting. It allows you to play with the time constant and
there is enough data available to figure out what the
John, looking at the 2804 manual they clearly only show applications where
the probe is in a liquid environment. Reliable results can be expected if the
probe is in a gas environment and has the time to stabilize but even than the
full accuracy is not attainable because of the conductivity
Thanks for your offer on the AD1861. I think I found some. Tried to answer
you direct. Address was rejected. Thanks again. Bert
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Does any one have pin out and or specs on the Frequency Electronics FE-5062B
Rubidium Standard. Any help would be greatly appreciated. Thanks Bert Kehren
WB5MZJ
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Does any one know where I can buy two PCM61P or AD1861? Thank you. Bert
Kehren WB5MZJ
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time-nuts mailing list --
I have a FE-5602B from Frequency Electronics. Can any one help me with info
on pin out and specification. Thank you Bert Kehren WB5MZJ. ewkeh...@aol.com
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