If anyone has a service manual I am also very interested. Thanks
Thomas Knox
From: tmil...@skylinenet.net
To: time-nuts@febo.com
Date: Wed, 2 Oct 2013 13:22:45 -0400
Subject: Re: [time-nuts] FTS 4060 Cesium Time Frequency Standard, Datum
Hello Corby,
Thanks for the help. Yes, could
I am currently attempting to put together a working clock out of a 4060 and two
4065's in various states of disrepair and have the the same question you posted
since most likely one or two of mine have depleted tubes. Does anyone have
PDF's of the service manuals on either of these units? I
Actually Dr Kent Irwin at NIST has developed very small and extremely sensitive
detectors using SQUIDs.
Not exactly a project that can be duplicated at home though. There are a number
of articles about his work on line.
Thomas Knox
Date: Sun, 29 Sep 2013 06:11:38 -0700
From:
No I don't have room since I set up my dilution refrigerator for Football
season.
Thomas Knox
Date: Sun, 29 Sep 2013 14:24:12 -0700
From: jim...@earthlink.net
To: time-nuts@febo.com
Subject: Re: [time-nuts] Pulsars make a GPS for the cosmos
On 9/29/13 1:52 PM, Tom Knox wrote
I am just thinking out loud on this, But it seems you could use carrier phase
from plain star light since the light spectrum from stars have spikes and
notches which are constant and using the same concept as the Hubble Constant a
spacecraft could determine speed, direction, and position. Like
With a cesium standards cheap is truly relative since the remaining of tube
life will make of break just about any deal regardless of price. Where it is
hard to pay to much for a 5071A with a fresh tube. But I am curious also what
others would consider cheap.
Thomas Knox
Date: Fri, 27 Sep
Wenzel has low phase noise amps the will meet your needs and with prices from
about $150-$300 the are an excellent value.
Thomas Knox
Date: Fri, 27 Sep 2013 10:53:10 -0700
From: rich...@karlquist.com
To: time-nuts@febo.com
Subject: [time-nuts] Looking for 1 GHz low phase noise amplifier
If there is Alien life on this planet they are most assuredly Time-Nuts.
Thomas Knox
From: paul.ree...@uk.thalesgroup.com
To: m...@maxsmusicplace.com; time-nuts@febo.com
Date: Thu, 26 Sep 2013 08:59:17 +0100
Subject: Re: [time-nuts] Pulsars make a GPS for the cosmos
Some of them might
It seems you would need to think of the Pulsar as the clock behind the GPS sat.
You then have an algorithm to add the other need information at the rec end. To
make things easier add to the constellation one master clock signal with
corrections and other needed info from earth.
Thomas Knox
Thanks Corby for adding the link, I should have provided the link in my earlier
post.
The shipping concern is because Cesium or Caesium metal is highly reactive and
very pyrophoric. In addition to igniting spontaneously in air, it reacts
explosively with water even at low temperatures, but the
to an
extent. I still have very low beam. Thats what amazes me most is the darn
thing actually locks by itself.
So increasing the temperature is worth a try.
Regards
Paul.
On Mon, Sep 23, 2013 at 2:16 PM, Tom Knox act...@hotmail.com wrote:
Thanks Corby for adding the link, I should have
The HP and Symmetricom Cesium standards have a hazmat exemption.
Thomas Knox
From: li...@rtty.us
Date: Sun, 22 Sep 2013 17:46:18 -0400
To: time-nuts@febo.com
Subject: Re: [time-nuts] HP5061B Beam Tubes
Hi
Well I can answer that one.
Sending a 5071 back to Symmetricom and getting a
If this at first appears to be off topic read on.
Having this year survived fire evacuations and most recently what has been
called anything from a five to 1000 year flood here in Boulder, I have has a
little time to reflect on just how lucky I was. Over the last few years I have
made a few
If you have another reference like a GPS or Rubidium it makes set up much
easier since you simply tune to 5MHz and then adjust current.
The High Perf Tubes often needed to be degaussed, I have the 10638A but no
cable if that is any help contact me off list.
Also placing an external power supply
I have heard it called about everything up to a 1000 year flood. But I also
heard a University of Colorado professor who monitors Boulder creek called it a
twenty five year flood. In any case I was lucky.
Thanks;
Thomas Knox
To: time-nuts@febo.com
From: hmur...@megapathdsl.net
Date: Sat, 21
What makes Ham Radio and the Time Nuts site successful is the comeradery and
respect we feel for those with a mutual interest. Time Nuts allows everyone
novice to industry professionals in the Time and Frequency community to freely
exchange ideas, and perhaps more importantly meet others with a
I may be mistaken but I thought the very close in Ultra Low Phase Noise was
what the BVA name was built on, even more then Aging. But with the performance
advances of Wenzel and others over the past few decades it is difficult to
justify the price.
Thomas Knox
Ascent Concepts and Technology
I could be wrong but I thought when I priced these for work the BVA 8600 AT cut
was substantially cheaper then that. I think the $11,000 is more in line with a
BVA 8607 SC cut with an option. But from my point of view the close in Phase
Noise on this particular oscillator is what dictates it's
The SiloTest unit was a very very early BVA. But that said the actual adev and
pn performance of that BVA should be the deciding factor as to ultimate value.
Thomas Knox
Date: Thu, 29 Aug 2013 22:29:40 +0200
From: azelio.bori...@screen.it
To: time-nuts@febo.com
Subject: Re: [time-nuts]
: Re: [time-nuts] B.V.A. 8600 for sale
Hi
On Aug 29, 2013, at 1:20 PM, Tom Knox act...@hotmail.com wrote:
I could be wrong but I thought when I priced these for work the BVA 8600 AT
cut was substantially cheaper then that. I think the $11,000 is more in
line with a BVA 8607 SC cut
It is my understanding that Quartz has a sweet spot at 5MHz that makes it ideal
if the lowest possible phase noise and highest stability are needed.
Thomas Knox
Date: Fri, 2 Aug 2013 19:57:16 +0200
From: mag...@rubidium.dyndns.org
To: time-nuts@febo.com
Subject: Re: [time-nuts] 5MHz x
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Tom Knox
Sent: Friday, August 02, 2013 2:02 PM
To: Time-Nuts
Subject: Re: [time-nuts] 5MHz x 10MHz
It is my understanding that Quartz has a sweet spot at 5MHz that makes
I have seen the same problem in the Fluke 5700A and 5720A calibrators on the
bottom board quite often and they do not run that hot and are usually in a lab
enviroment.
Thomas Knox
To: time-nuts@febo.com
From: hmur...@megapathdsl.net
Date: Fri, 26 Jul 2013 19:22:10 -0700
Subject: Re:
On the other end of the price spectrum, depending on budget I think a great
value is an Agilent L1500A . There is currently one on eBay with a tracking
generator for $2000 make offer so perhaps $1200-1500 .
It is portable, accurate , relieable, and super user friendly instrument. If
you can
On Jul 14, 2013, at 3:24 PM, Tom Knox act...@hotmail.com wrote:
On the other end of the price spectrum, depending on budget I think a great
value is an Agilent L1500A . There is currently one on eBay with a
tracking generator for $2000 make offer so perhaps $1200-1500
The best I have test by far is the Rohde SMA100A with option B22 LPN.
The Agilent E8663D is very good also.
The 8664/5A/B with option 004 LPN or the IFR 2041/2 are perhaps the best at a
reasonable price.
Thomas Knox
Date: Tue, 9 Jul 2013 08:53:54
I hope no one minds if I take a moment to reflect.
Crystals are a great example of what can be accomplished today in physics and
how far we still have to go. Crystals are still really is as much art as
science. I think that is what draws me to draw of Time and Freq, one day you
can be taking
I wonder what is the best way to obtain 44.1KHz from a 5-10MHz reference.
Thomas Knox
Date: Wed, 19 Jun 2013 15:14:17 -0600
From: alanh...@gmail.com
To: j...@quikus.com; time-nuts@febo.com
Subject: Re: [time-nuts] [OT} audiophile outlets.
Rb or Cs locked 50/60 Hz AC power might
sell yours for? I imagine that in view of what you
would sell for the guys $4500 price looks a bit more reasonab
le. I guess my question is what would you pay and what have you paid for a
5MHz oscillator with -120dB @1Hz? what about -130dB @1Hz? what about -135dB at
1Hz?
Tom Knox
Date: Tue
I am sure someone brought this up already, you appear to be seeing the
rubidium attempting to lock. The sweeping is the oscillators attempt to find
the Rubidium Resonance. It should lock in 15-20 minutes.
Thomas Knox
Remember tact is the art of making someone feel at homewhen you
Several co-workers have researched this subject extensively and have published
a number of interesting papers on the subject. The other question is what is
the nature of seismic activity in general, and specifically in your area. If I
am not mistaken the force vectors can vary greatly depending
Anyone who is serious about Time and Freq has run into ground loop problems,
and finding a solution is often more Art then Science
A common solution is star grounding, Another approach is grid work grounding,
another possible solution is to isolate each instrument.
Most often some trial and
The idea of a Mercury Ion clocks started about 2000 and from about 2005 until
recently has held the title of worlds most accurate clock.
Approx 1 sec per 1.6 billion years the last I heard. At the heart is a single
trapped mercury atom. Jim Bergquist at NIST was one of those that lead the
Recently I was looking at a co-workers Lab View measurements taken with a
5120A. She is studying vibration on Phase Noise. I asked how Lab View compared
to TimeLab and she said in many ways she prefers TimeLab but ran into a
problem. The research she is currently conducting requires collecting
Hi Stu;
Interesting, I have a problem Datum 4040A as well. I purchased it several years
ago and when it fail to work correctly I put it aside. I wonder if mine has
the same problem, I find your assessment that the STEL-1173 is problematic
interesting. I have found over the years that certain
The eBay emails appear real since it can also be accessed on my actual eBay
site. I cannot imagine what a pain it would be to sell 20 items on eBay each to
a buyer in a different state and be required to file the paperwork to pay taxes
on each of those sales. This is a formula for disaster.
start a new thread.
Tom Knox act...@hotmail.com
Date: Thu, 18 Apr 2013 19:58:22 +0200
From: mag...@rubidium.dyndns.org
To: time-nuts@febo.com
Subject: Re: [time-nuts] antennas was Re: Common-View GPS Network
On 04/18/2013 04:00 PM, Jim Lux wrote:
On 4/18/13 12:01 AM, Chris Albertson wrote
Hi Bob;
I was wondering who won the unit. They are very nice oscillators. With noise on
older equipment like the 1050A I would check and/or replace caps.
I am about to do that to my own 1050A. It may not resolve the problem, but it
will eliminate that possibility. I look forward to hearing how
My last one was eBay as well.
Thomas Knox
Date: Wed, 3 Apr 2013 23:15:06 -0400
From: bobda...@triad.rr.com
To: time-nuts@febo.com
Subject: Re: [time-nuts] Question about FTS 1050A
Dick,
If you're asking about the FTS 1050A it was on Ebay. I believe
Symmetricom still sells them but
We are looking into using two N/E550XA/B Phase Noise systems and the 89410A to
build a Cross Correlated measurement system.
I was wondering if anyone has attempted this before? Does anyone know where to
find the base GPIB command codes for the 70420A system?
Thanks;
Thomas Knox
Phase Noise
, KE5FX
Miles Design LLC
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-
boun...@febo.com] On Behalf Of Tom Knox
Sent: Saturday, March 30, 2013 10:17 AM
To: Time-Nuts
Subject: [time-nuts] Building a Agilent Cross Correlated Phase Noise
Measurement
I think designing a good distribution amp is much more difficult then it would
seem at first glance. But placing it in a system is the real challenge. If you
have a ULN 5MHz oscillator that has phase noise of -125dB @ 1Hz and a noise
floor of 167dB @10KHz it will take some real attention to
I use some Pomonas also and I think they are single shielded except the Y which
is double shielded. This may explain some artifacts I have in my house
reference.
Great Thread
Thomas Knox
To: time-nuts@febo.com
From: johncr...@aol.com
Date: Sun, 3 Mar 2013 14:08:15 -0500
Subject: Re:
Hi Tammy;
Here is a link to the operation and service manual on Symmetricoms site:
www.symmetricom.com/link.cfm?lid=5283
Best Wishes;
Thomas Knox
4475 Whitney Place
Boulder Colorado 80305
1-303-554-0307
Date: Fri, 8 Feb 2013 15:35:56 -0700
From: tammy-li...@wiztech.biz
To:
Hi Rick;
Starting with a hp supply this finesse regulator will really clean up the
output. http://www.wenzel.com/documents/finesse.html
Best Wishes;
Thomas Knox
Date: Wed, 30 Jan 2013 18:16:46 -0800
From: rich...@karlquist.com
To: time-nuts@febo.com
Subject: [time-nuts] Low noise power
I think the key is to always obtain the best oscillator/s possible.
Combining oscillator for lower Phase Noise does work but with
diminishing returns. If I am not mistaken 2 perfectly matched phase
locked oscillators can theoretically lower Phase Noise 3dB, four can
lower Phase Noise
Does anyone have ideas on how I can trigger my camera to capture the end of
the world roll over on my clocks.
Thomas Knox
Date: Wed, 19 Dec 2012 09:13:34 -0800
From: j...@quikus.com
To: Time-Nuts@febo.com
Subject: [time-nuts] OT: Mayans
-John
===
I think the data shows that the heaters were losing ground, which would explain
the steadily falling temp of the SC cut quartz.
Thomas Knox
From: saidj...@aol.com
Date: Wed, 19 Dec 2012 21:28:15 -0500
To: time-nuts@febo.com
Subject: Re: [time-nuts] Z3805A cooling requirements?
Bob,
I
Is the GWEN (Ground Wave Emergency Network) still active, and why was this
never combined with LORAN or WWV? I had never heard of this controversial
network until recently, and never knew it had a number of stations here in
Colorado, one only five miles away.
Thomas Knox
Great to hear John.
Thomas Knox
Date: Sat, 1 Dec 2012 13:24:35 -0700
From: ke...@rosenberg.net
To: time-nuts@febo.com
Subject: Re: [time-nuts] 3120A Phase Noise Test Probe
Magnus Danielson wrote:
Congratulation John! Good work!
Truly well-deserved, John!
Kevin
I have been waiting for two N1922A sensors for a couple months now from
Agilentused the new eBay site. They have already offered a substantial discount
on my next purchase. And their prices were already very good. The only concern
is the delay has put the transaction beyond the point the eBay
Hi Edgardo;
I have been looking for a part number and source. There was a part number
posted but it was for the 34401A which is slightly different. I will post price
and availability if I find them.
Best Wishes;
Thomas Knox
From: xe1...@amsat.org
Date: Tue, 13 Nov 2012 21:37:08 -0600
To:
In step 2 is this my Lab Ref, or the SR620 ref out that is put into Ext Ref
and Input A ?
Thomas Knox
Date: Mon, 12 Nov 2012 09:52:13 -0800
From: garn...@gmail.com
To: time-nuts@febo.com
Subject: Re: [time-nuts] SR620 software and adjustment
Volker:
This is the adjustment
the reference in step 2 is the best reference you own, not the
internal ref. sorry for the confusion.
-eric
On Mon, Nov 12, 2012 at 9:59 AM, Tom Knox act...@hotmail.com wrote:
In step 2 is this my Lab Ref, or the SR620 ref out that is put into Ext
Ref and Input A ?
Thomas Knox
Hi Magnus;
I hope this is not to far off thread. Has anyone in the group done real world
measurements of single shot res, and jitter on the new Agilent and
Tektronix/Pendulum counters compared to the SR620 and Agilent 53132A. I would
imagine that counter designs would be an area that really
The replacement display board is available for about $550. The display itself
may be available if you could find the part number for about $125, but Agilent
WILL NOT give the raw display part number out. I ran into this same problem
with the 3458A and was finally able to find the number and
Hi Magnus;
I have looked several times for an article that explains charging perimeters
for the various types of batteries on the market. So many freq standards have
outdated battery technology. It would be nice to find an modern alternative
battery that does not require much modification to
Hi Magnus;
I know I am stating the obvious but the batteries with no external power
provides by far the lowest noise. And if that is desired NiMh have a much
better discharge characteristic then NiCd. But there is something to be said
for maintaining the oscillator in factory original
It would be interesting to switch the A and B oscillators. The 10811 spec can
vary widely.
Thomas Knox
Date: Mon, 22 Oct 2012 07:21:08 +1000
From: dho...@gmail.com
To: time-nuts@febo.com
Subject: [time-nuts] GPSDO three cornered comparisons
Hi All,
I have an HP 58503A and a
I overlooked it also. Glad the problem is resolved.
Thomas Knox
Date: Tue, 16 Oct 2012 12:31:13 -0400
From: mdan...@gmail.com
To: time-nuts@febo.com
Subject: Re: [time-nuts] Hp 58503A
I guess this it what they would call a rookie move? WOW, i feel like an
idiot. I just loaded it down
Hi;
I recently found a few Wenzel oscillators with the 10811B 58503A/B style case
and connections. These are hermetically sealed unlike the HP units. Does anyone
know what product these were used in or any other information about these?
Thanks;
Thomas Knox
. I suspect everybody in the business made parts in that
package.
Bob
On Oct 14, 2012, at 4:31 PM, Tom Knox act...@hotmail.com wrote:
Hi;
I recently found a few Wenzel oscillators with the 10811B 58503A/B style
case and connections. These are hermetically sealed unlike the HP
Sounds like another dead cap.
Thomas Knox
Date: Sat, 13 Oct 2012 14:51:54 +0200
From: rfn...@arcor.de
To: time-nuts@febo.com
Subject: [time-nuts] HP 10811A failure
Hi All,
both of my double oven 10811A's have been running flawlessly until now
when I noticed that the output power
Azelio Boriani schrieb:
And, why 12V for the oven? The 10811A manual states from 20V to 30V for the
oven. 12V for the oscillator itself.
On Sat, Oct 13, 2012 at 4:34 PM, Tom Knox act...@hotmail.com wrote:
Sounds like another dead cap.
Thomas Knox
Date: Sat, 13 Oct 2012 14
I believe it is possible for splitters to be invisible to your system. My first
choice would be multiple Antennas. But if you have multiple GPS receivers and
require outputs to your test bench, splitters are the logical choice. That said
the splitter adds complexity to the system and
We really need a group buy of 5071A tubes for a couple hundred each.
Thomas Knox
Date: Thu, 4 Oct 2012 15:10:11 -0400
From: paulsw...@gmail.com
To: time-nuts@febo.com
Subject: Re: [time-nuts] 5071A Cs Oven
Learn something every day here. How to really extend the old dead C life a
bit
Rick it is really fantastic to see Time Nuts occasionally discuse different
aspects of products they actually designed. This form is really a treasure.
In the future it would be interesting to here how you would approach the next
quartz industry standard. The next generation Blue-Top or BVA.
a
POT and the DB9 to DB9 crossover wiring adapter. You can then see the
correct pinout since the internal DB9 connector on the main BVA is
conventionally wired. Email of call if I can be of more help.
Best Wishes;
Tom Knox
Time and Frequency Division
NIST
4475 Whitney
Are you sure it is fiction? It sounds like the only place Lance Armstrong will
be allowed to ride his bike in 2050.
Thomas Knox
From: b...@iaxs.net
To: time-nuts@febo.com
Date: Tue, 25 Sep 2012 01:05:13 -0500
Subject: [time-nuts] WOT: Identify this movie
It's a dark and quiet night,
is
conventionally wired. Email of call if I can be of more help.
Best Wishes;
Tom Knox
Time and Frequency Division
NIST
4475 Whitney Place
Boulder Colorado 80305
1-303-554-0307
From: df...@ulrich-bangert.de
To: time-nuts@febo.com
Date: Tue, 25 Sep 2012 20:14:47 +0200
Subject: [time-nuts
Using my Aeroflex GPS simulator and Agilent ENC analyzer I could see no
noticeable effect on S/N. But these signal are near the analyzers limit.
Best Wishes;
Thomas Knox
Date: Mon, 24 Sep 2012 16:41:42 -0700
To: time-nuts@febo.com
From: e...@telight.com
Subject: Re: [time-nuts] GPS over
I do not think this is an intentional email from the addressee. I have seen
something like this several years ago. It is some sort of malware.
Thomas Knox
Date: Sat, 22 Sep 2012 22:58:38 -0700
From: wb6...@cox.net
To: time-nuts@febo.com
Subject: Re: [time-nuts] cozevolosjce
True-cal,
Hi;
Same one. Phase Noise stinks. Yes it is small but add a descent oscillator and
you have lost the size advantage. Still very cool.
Thomas Knox
Date: Wed, 19 Sep 2012 22:57:31 -0700
From: li...@lazygranch.com
To: time-nuts@febo.com
Subject: Re: [time-nuts] Interesting...
Is this
Ron;
I think the Wenzel Blue Tops are very good.
Thomas Knox
From: n6idl...@comcast.net
To: time-nuts@febo.com
Date: Tue, 18 Sep 2012 22:31:25 -0700
Subject: [time-nuts] HP-106 and Sulzer Quartz Crystals
Hi:
Does anyone know who made the crystal for the HP-106 and / or Sulzer
$1M.
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Tom Knox
Sent: Wednesday, September 19, 2012 10:47 AM
To: Time-Nuts
Subject: Re: [time-nuts] HP-106 and Sulzer Quartz Crystals
Ron;
I think the Wenzel Blue Tops
was HP's Blue Stripe Replacement program about?
Thanks,
Ron
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Tom Knox
Sent: Wednesday, September 19, 2012 8:38 AM
To: Time-Nuts
Subject: Re: [time-nuts] HP-106 and Sulzer Quartz
...@febo.com] On
Behalf Of Tom Knox
Sent: Wednesday, September 19, 2012 8:38 AM
To: Time-Nuts
Subject: Re: [time-nuts] HP-106 and Sulzer Quartz Crystals
Hi Bob;
Quartz is of course and art so generally speaking the BVA is great very
close in, but at 1Hz they do not have much if any better
Hi Paul;
I started thinking about this project because we are installing a new EMC room
at work and thought we could use totally eliminate lighting as a noise source
with LED lighting. Allowing lighting during even the most precise measurements.
While researching I ran across some amazing
I remember reading that Hollywood played with faster frame rates and found a
substantial number of people experience motion sickness.
Thomas Knox
Date: Tue, 18 Sep 2012 10:51:07 -0700
From: jim...@earthlink.net
To: time-nuts@febo.com
Subject: Re: [time-nuts] Hi Power LED Light power
supply? Plenty of amps
available and those switchers have typically had to have their EMI emissions
cleaned up.
Tom Holmes, N8ZM
Tipp City, OH
EM79
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Tom Knox
Sent: Sunday
Great dialog, One thing I have seen is the Allan intercept almost always has a
knee. If you wanted the best possible GPS quartz reference developing a
variable Allan intercept would allow this knee to be moved and then
mathematically removed during a gated measurement.
Allowing to effectively
In this green era here in the USA there is a big push toward CFL lighting.
Problem is I can see my CFL lighting on my PN measurements and other equipment.
I am finding it is very noisy so I have started researching cost effective LED
lighting and was amazed at what is available. On eBay there
I may have the opportunity to bulk purchase several Very high end GPS over
fiber systems. This system is great if you have a long cable run; or in my
case, to isolate my Time and Freq system from lightning strikes. I understand
they are two Antenna systems and they will work with any antenna
:36:48 +0200
From: azelio.bori...@screen.it
To: time-nuts@febo.com
Subject: Re: [time-nuts] GPS over fiber
GPS over fiber is GPS RF signal over fiber or the PPS over fiber or
something else?
On Fri, Sep 14, 2012 at 7:12 PM, Tom Knox act...@hotmail.com wrote:
I may have the opportunity
FedEx is great compared to UPS in Boulder. UPS boxes are usually crushed and
beat up, FedEx the boxes are almost always pristine.
Thomas Knox
Date: Tue, 11 Sep 2012 11:02:15 -0500
From: n...@verizon.net
To: time-nuts@febo.com
Subject: Re: [time-nuts] Be aware of test equipment seller
I think any Time Nut worth his salt should own a tourbillon watch, or several.
Some would consider these a bargain compared to a new Hydrogen Maser.
If a tourbillon does fit your budget Citizen makes many great watches. After
breaking my third $100 watch in a year I purchased a Analog Citizen
Everyone know the Tardis uses the UEC (Universal Expansion Constant). Tardis
time is based on the instant of the Big Bang. To determine current time simply
measure the distance between the leading edge of expansion on opposite sides of
the universe and divide by 93,000 to have UEC in seconds.
Hi Corby;
What is the freq?
Thaks;
Thomas Knox
To: time-nuts@febo.com
Date: Mon, 10 Sep 2012 11:22:56 -0700
From: cdel...@juno.com
Subject: [time-nuts] FTS 1000B oscillator for sale
Hi,
I put an FTS 1000B oscillator on sale at eBay see item # 320980495168 if
you are interested.
I
I had someone ship me a calibrator several years ago and he assured me he was a
great packer and had a box that fit it perfectly. He was right the box fit
perfectly, no padding required. Is the unit repairable? What parts are required?
Good Luck
Thomas Knox
Date: Mon, 10 Sep 2012 23:16:55
, Tom Knox act...@hotmail.com wrote:
I had someone ship me a calibrator several years ago and he assured me he
was a great packer and had a box that fit it perfectly. He was right the
box fit perfectly, no padding required. Is the unit repairable? What parts
are required?
Good Luck
ebay. Hang in
there and be patient, let the system work for you.
Peter
Sep 10, 2012 07:12:38 PM, time-nuts@febo.com wrote:
On 10 September 2012 23:55, Tom Knox wrote:
Hi Dave;
Hi Tom,
I would also recommend opening a Not As Described through eBay
I have seen that many commercial ref distribution amps are not as good as a
quality low phase noise 5 or 10MHz oscillator, considering the time and
resources that went into their design
I think it would be difficult to design a amp capable of distributing something
much cleaner then a LPRO.
term and close in phase noise. If you have a wide band floor at -185
dbc/Hz on your OCXO they aren't quite up to that level.
Bob
On Sep 5, 2012, at 5:55 PM, Tom Knox act...@hotmail.com wrote:
I have seen that many commercial ref distribution amps are not as good as a
quality low
Hi;
Has anyone compared the 1130 and 1000B. Are they plug and play interchangeable
as far as VC. I have a few data sheets that spec each differently. It looks
like the 1000B has better Close in Phase Noise and the 1130 has better long
term stab.
Thanks;
Thomas Knox
Hi;
I am thinking of upgrading from a 1130 to a 1000B as a disciplined clean up
oscillator. As I look into this it appears the 1130 has an electronic tuning
range of 2-8vdc for +/-2E8. I cannot fine exact details on the 1000B, there
appears to be a opt 505 with a 0-10vdc range 506 with a +/-
Hi Jerry ;
I assume you mean RFTGm-II-XO. The cell sites usually had an Andrew 26dB
antenna with a real short coax run. They also had a 40dB antenna option if
needed. Unless you have a long coax run the Symmetricom ant should be ideal. I
don't think the RFTGm-II-XO lock as quickly the
Hi;
I may have a LPRO unit, if so I will post pictures.
Best Wishes;
Thomas Knox
Date: Sun, 26 Aug 2012 21:08:03 -0500
From: roc...@watzlavick.com
To: jleik...@leikhim.com; time-nuts@febo.com
Subject: Re: [time-nuts] re ET-6000 firmware
The manual I have isn't too clear on the
Hi Ed;
I may not have had enough coffee yet, but if Volt X Amps = Watts why would
there be a difference?
Best Wishes;
Thomas Knox
Date: Sun, 19 Aug 2012 12:35:51 -0600
From: ed_pal...@sasktel.net
To: time-nuts@febo.com
Subject: Re: [time-nuts] Modern motherboard with RS232 port
It's
: albertson.ch...@gmail.com
Date: Sun, 19 Aug 2012 13:16:08 -0700
To: time-nuts@febo.com
Subject: Re: [time-nuts] Modern motherboard with RS232 port
On Sun, Aug 19, 2012 at 12:19 PM, Tom Knox act...@hotmail.com wrote:
Hi Ed;
I may not have had enough coffee yet, but if Volt X Amps
Hi Paul;
Has anyone played with these Lucent units much to see if LH could be tweaked to
work?
Thanks;
Thomas Knox
Date: Sun, 19 Aug 2012 22:44:38 -0400
From: paulsw...@gmail.com
To: time-nuts@febo.com
Subject: Re: [time-nuts] Lucent GPS and RB pair
Boy do I agree with Bobs comment.
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