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Neither the voice of authority nor the weight of reason and argument are
as significant as experiment, for thence comes quiet to the mind.
R. Bacon
Dr. Don Latham AJ7LL
Six Mile Systems LLP
17850 Six Mile Road
POB 134
Huson, MT, 59846
VOX 406
quiet to the mind.
R. Bacon
Dr. Don Latham AJ7LL
Six Mile Systems LLP
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as significant as experiment, for thence comes quiet to the mind.
R. Bacon
Dr. Don Latham AJ7LL
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As usual, no prices. If you have to ask, you can't afford one :-)
Don
- Original Message -
From: luke.hoffm...@l-3com.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Thursday, May 27, 2010 8:33 PM
Subject: Re: [time-nuts] Most accurate small
Could probably do it all with a Propeller.
Don
- Original Message -
From: jimlux jim...@earthlink.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Tuesday, May 25, 2010 9:36 PM
Subject: Re: [time-nuts] IRIG B
Bob Camp wrote:
Hi
Audio codecs
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and follow the instructions there.
--
Neither the voice of authority nor the weight of reason and argument are
as significant as experiment, for thence comes quiet to the mind.
R. Bacon
Dr. Don Latham AJ7LL
Six Mile Systems LLP
17850 Six Mile Road
POB 134
Huson, MT, 59846
You can also look up the gm of the nuvistors and get a reasonable match to a
fet as well.
Don
- Original Message -
From: J. Forster j...@quik.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, May 02, 2010 9:23 PM
Subject: Re: [time-nuts]
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Looks OK, but fledgling. A lot of different journals, catering to developing
country scholars, and very ambitious. Personally, I would try more
recognized outlets first.
Don
Dr. Don J. Latham
17850 Six Mile Road
POBox 460134
Huson, MT 59846
406-626-4304
www.sixmilesystems.com
-nuts
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such as attenuators, frequency sources,etc that might be adapted to
PC's through USB adapters. Anyone done that?
Just an idle thought, but is there a group somewhere in netspace where
this kind of info is collected?
Pardon the sort of mind fart...
Don Latham
jimlux
Scott Burris wrote:
CH closed
the instructions there.
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don't make much of a dinner.
Thanks,
Bill Hawkins
b...@iaxs.net
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; charset=ISO-8859-1; format=flowed
Don Latham wrote:
hello the group:
I've just installed a new mercury-free thermostat in my shop. I
looked the thing over and realized it has everything needed to control
a constant temperature enclosure. There's a diode used as temp
sensor,easy to remote
problem rather than a capacity problem.
Don
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water is pretty good, too and cheap. Coupling to it is easy as well.
Don
- Original Message -
From: jimlux jim...@earthlink.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Wednesday, March 10, 2010 9:35 PM
Subject: Re: [time-nuts] Thermal time
Hi Bob: sounds as if it just had a hard bump, meaning that all the boards
and connectors need reseating. I had an Hp device with a tiny crack in a pc
trace on the motherboard, but by golly I found it. Hope the B doesn't prove
to be a sequential vortex :-)
Don
- Original Message -
it, tearing it open and checking all the internals is
definitely on the list of things to do. Finding a board loose or a screw
that needs tightening is pretty likely.
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Don Latham
Sent: Tuesday
are full of navel lint and need cleaning).
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.
Bob
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. These are through-hole and not recommended for new products, but
perfectly good for messin' around.
Don
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Is that buttermilk or blueberry batter? :-)
Don
- Original Message -
From: Bruce Griffiths bruce.griffi...@xtra.co.nz
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Saturday, February 27, 2010 7:32 PM
Subject: Re: [time-nuts] Achieving maximum
I've fixed shafts like this carefully with plastic swizzle sticks and super
glue. Did I say carefully? a little dab'll do ya...
Don
- Original Message -
From: Mark Sims hol...@hotmail.com
To: time-nuts@febo.com
Sent: Saturday, February 27, 2010 10:10 PM
Subject: [time-nuts] Achieving
I see that there is a 5061 on epray with the usual evasive statement to the
effect that the seller is completely ignorant except it turns on. Is the Cs
tube liable to be OK? If so, I feel competent to fix anything else that does
not call for esoteric or exceedingly rare parts :-)
I just don't
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There is a heat conductive rubber gasket material for automotive use...It's
the higher frequency mechanical thumps you need to get rid of.
Don
- Original Message -
From: Stan, W1LE stanw...@verizon.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent:
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I was told that there were a couple of adjustment pots that went bad; I
cannot remember which ones but they are in the feed from the receiver to the
digital control if that makes sense. I sold the one I had a year or so ago.
Don
- Original Message -
From: Majdi S. Abbas m...@latt.net
somewhere with a set of
original manuals for the 2.x version.
Now if it just had a SR-620 counter built into it
Bob
On Feb 2, 2010, at 1:20 AM, Don Latham wrote:
Oh, forgot. My firmware appears to be something like A.02.4 or something
like that, and the manuals are A.05.0 or so. another
they be?
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-nuts
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to be the weakness of a lot of
test gear these days.
Can't wait to measure -100 dbc/Hz phase noise with mine :)
Bob
On Feb 1, 2010, at 5:34 PM, Don Latham wrote:
Just bought one last week. As advertised, came with a cal and checkout
sheet. BTW, cost another $150 to have manuals printed out
:29 PM, Don Latham wrote:
Hi Bob. Display shows use, definitely, but I can see info over the whole
tube. I have a couple of things to do before I can start the learning
curve, but am looking forward to using it.
I'll have a bunch of test stuff for sale if this thing works out ;-)
Don
Bob Camp
Hi
with
the sub-800 MHz stuff enabled. I get the impression that the E8285's never
quite did as well below 30 MHz as the 8920's do.
Bob
On Feb 1, 2010, at 7:29 PM, Don Latham wrote:
Hi Bob. Display shows use, definitely, but I can see info over the whole
tube. I have a couple of things to do
The connection is alchemical,
Don
- Original Message -
From: Bruce Griffiths bruce.griffi...@xtra.co.nz
To: j...@quik.com; Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Saturday, January 30, 2010 8:53 PM
Subject: Re: [time-nuts] Conducting Bench Top
also matches the sun within reason...
Don
- Original Message -
From: Magnus Danielson mag...@rubidium.dyndns.org
To: j...@quik.com; Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Friday, January 29, 2010 6:12 PM
Subject: Re: [time-nuts] Conducting Bench
rather not just send a board, OK?
Anyone want it for $50 plus shipping?
Don
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Huson, MT, 59846
VOX 406-626-4304
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Hi Jim: Did you send a message?
Don
Jim Cotton
Don Latham wrote:
Hi TN's I have an Hp 3750A interval counter for parts. Front panel bezel
is missing, as is the time base. It had a 10544A in it, I think.
All other boards, etc. are there; condition unknown except no smoke
escapes when fired up
Scott: I appreciate that! But I need to get rid of the whole thing. If I
do peddle it, I can let you know who bought it, and maybe...;
Don
Scott Newell
At 01:57 PM 1/25/2010 , Don Latham wrote:
Hi TN's I have an Hp 3750A interval counter for parts. Front panel bezel
is missing, as is the time
your time and bandwidth. Guess
I'm trying to be a good TN netizen and don't want to impose or try to turn
this very nice list into an ***Y.
Thanks, Don
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POB 134
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VOX 406-626-4304
www.lightningforensics.com
. Don Latham AJ7LL
Six Mile Systems LLP
17850 Six Mile Road
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VOX 406-626-4304
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If you have the space, you could do what I do, and bolt multiple folding
tables together with 'L'- and 'T'-shaped flat metal brackets. The idea,
besides adding surface area, is to dampen the tables' tendency to wobble.
This adds a surprising amount of stability and load-bearing capacity. It
- Original Message -
From: paul swed paulsw...@gmail.com
Its unfortunate but there used to be flea markets with truckloads of test
equipment.
Very inexpensive power supplies and everything else. But much of that has
gone to ebay.
You still find a bargain now and again. But nothing like
structure, yielding to abrupt length changes. Can't have everything, I
suppose...
Best to all,
Don Latham
- Original Message -
From: Hal Murray hmur...@megapathdsl.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Monday, January 11, 2010 8:04
No. You've already fallen in the rabbit hole.. The next thing is to begin
your study of randomness.
HeHeHeHe...
Don
- Original Message -
From: Nic McLean mcle...@bigpond.com
To: 'Discussion of precise time and frequency measurement'
time-nuts@febo.com
Sent: Monday, January 11, 2010
Ah, but a torsion pendulum is inescapably a kind of vertical pendulum as
well?
Don
- Original Message -
From: J. Forster j...@quik.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Monday, January 11, 2010 9:22 PM
Subject: Re: [time-nuts] Non
not hard to visualize. If done that way, perhaps the two rods/tubes and the
bob should be stress relieved by liquid nitrogen treatment. Seems to work
for rifle barrels (one of my other time absorbers)
Don
- Original Message -
From: Lux, Jim (337C) james.p@jpl.nasa.gov
To:
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it is..)
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Hp kinda stole the idea from the old General Radio syncro clock (I have
two of these). In the longago time, we had a homemade version that
generated 1 sec ticks to drive clocks in our research tower lab at New
Mexico Tech. It ran for a number of years.
Don Latham
Chuck Harris
Sing
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Try these guys:
http://www.sphere.bc.ca/test/
I've dealt with them for Tek parts in the past; they are quite good.
Don
- Original Message -
From: Don @ True-Cal true-...@swbell.net
To: time-nuts@febo.com
Sent: Saturday, January 02, 2010 1:33 PM
Subject: [time-nuts] Tektronix TM500
there.
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would be of
the same order.
Bruce
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sheesh! How about a right-sized water jug?
Don
- Original Message -
From: Bob Camp li...@cq.nu
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Tuesday, December 22, 2009 8:23 PM
Subject: Re: [time-nuts] Cheap Rubidium
Hi
I agree that if you simply
Is this the basis document for the Heathkit Most Accurate Clock???
Don
- Original Message -
From: Justin Pinnix jus...@fuzzythinking.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Friday, December 18, 2009 9:40 PM
Subject: [time-nuts]
shouldn't need to tune
it manually - which is good since you CAN'T tune it manually. :-)
Ed
Don Latham wrote:
so how do you reach the tuning capacitor?
- Original Message - From: John Green wpxs...@gmail.com
To: time-nuts@febo.com
Sent: Friday, December 04, 2009 10:56 PM
Subject: Re
so how do you reach the tuning capacitor?
- Original Message -
From: John Green wpxs...@gmail.com
To: time-nuts@febo.com
Sent: Friday, December 04, 2009 10:56 PM
Subject: Re: [time-nuts] Stinky Z3801
Since the oscillator/inner oven can is sealed, how can you smell it?
Bill Hawkins
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One of the group wanted a pinout for the eros funky frequency ocxo.
Unfortunately, I lost the email. Could you email me again? Also, does your
unit have a connector or plain pins? Are there two type SMB connectors?
I have one of each type.
Don
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I just found in my dusty junk, a couple of ovenized frequency sources at
5.199155 MHz, part# EROS-750-MA111 Dunno why I got these. Is this a magic
frequency? It does not seem to divide down to a baudrate...
Don
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Thanks, Didier. I've uploaded diurnaltot.jpg. It is not fancy, but is
readable.
Anyone interested in on-or off-line csn email me. Seems as if the demise of
loran will kill this, unless groundwave from wwvb at 60 khz is of interest.
Don Latham
- Original Message -
From: Didier Juges
there.
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there.
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a #$%^. The
way to calculate the refractive index of moist air is given. I don't know
how to post these images to the list, so help please. There was no reason to
pursue the idea at the time, so maybe with the extensive network of the
time-nuts some sense can be made of the idea. Dunno.
Don Latham
) and the CW12 module
that's based on the CW25 but is easier to connect to costs $84.
Ed
Don Latham wrote:
I'm pretty sure the list members are aware of this, but the
Connor-Winfield corp (conwin.com) announced a gpsw timing module, $40 in
bulk, that maintains phase alignment between the 10 MHz and 1 PPS
-satellite timing. I have not loked yet, but this looks to
be a useful device.
Don
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I was just reminded that I left out the model number of the
Connor-Winfield module. It is Wi-125. Sorry.
Don
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knows...
Don
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Now if I could only come up with $1500 for Labview, I'd drive my equipment
with it too :-)
Don Latham
- Original Message -
From: Mark C. Stephens ma...@non-stop.com.au
To: time-nuts@febo.com
Sent: Tuesday, October 13, 2009 5:37 PM
Subject: [time-nuts] Getting GPIB to work on HP5382B
Hi All: I put extended fins on my 1980's Hp equipment by drilling and
tapping the existing sink. I used the white heatsink grease from Radio
Shack to help.
Don Latham
Joseph Gray
The heatsink on my unit is quite hot, also. I'm thinking about putting
a fan on it after I get everything working
oh yeah-cool :-)
Don
Joseph Gray
So now all your HP equipment looks like a 1950's parking lot, huh?
On Sat, Oct 10, 2009 at 4:16 PM, Don Latham d...@montana.com wrote:
Hi All: I put extended fins on my 1980's Hp equipment by drilling and
tapping the existing sink. I used the white heatsink
Magnus! 42 is most certainly not arbitrary. It's the answer to God, the
Universe, and Everything!
Don
- Original Message -
From: Magnus Danielson mag...@rubidium.dyndns.org
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Tuesday, October 06, 2009
IMPEDANCE GROUND PATH is the right thing for managing
strikes; radioactive or brush rods only serve to protect themselves and
don't do a darn thing for anything around them except divert the strikes
to the close surroundings.
Don Latham
Brooke Clarke
Hi Kevin:
I agree with all you have said regarding
. The
single plate ground point is of course correct, as is non-tapped leads
from each piece of equipment.
Don Latham
www.lightningforensics.com
Burt I. Weiner
Something I should've mentioned is that the connections are all
essentially in series. For example. If you have a wire going to a
ground
not even asked
( bitter experience).
Don
Magnus Danielson
Don Latham wrote:
Hi Burt and all:
Only a reminder: lightning is a pulse, and especially at the ground
terminus can have frequency components in excess of tens of MHz. Think
in
terms of impedance rather than resistance.
I think the use
is the
thing weighs about 150 lb. Remember that electronics was sold by the pound
to the armed forces in the good ol' days? I took apart a mobile SCR-545
radar oncet and it had cast brass chassis (!).
Anyhow, let me know if you're interested...
Don
--
Dr. Don Latham AJ7LL
Six Mile Systems LLP
17850 Six
Can be arranged!
Don
WB6BNQ
Don,
Is it possible to see some pictures of this beast ?
Also, it sounds like it needs to be in TVB's museum where it will get the
best
care.
BillWB6BNQ
Don Latham wrote:
New Topic:
In case anyone on the list is interested, a friend (really!) has
darn. I should have made clear I meant on the part of Hp/Agilent!!!
No flames please.
Don
- Original Message -
From: Don Latham d...@montana.com
To: rich...@karlquist.com; Discussion of precise time and frequency
measurement time-nuts@febo.com
Sent: Sunday, September 06, 2009 11:58 PM
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--
Dr. Don Latham AJ7LL
Six Mile Systems LLP
17850 Six Mile Road
POB 134
Huson, MT, 59846
VOX 406-626-4304
the instructions there.
--
Dr. Don Latham AJ7LL
Six Mile Systems LLP
17850 Six Mile Road
POB 134
Huson, MT, 59846
VOX 406-626-4304
www.lightningforensics.com
www.sixmilesystems.com
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yet another reason not to buy a CS clock. What kind of self-destructive bs
is this?
Don
- Original Message -
From: Rick Karlquist rich...@karlquist.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, September 06, 2009 9:54 PM
Subject: Re:
Your bet is right, I have dealt with outback. A bit sharp, as our English
cousins say. Caveat very much emptor...
Don
- Original Message -
From: Jim Palfreyman jim77...@gmail.com
To: Tom Van Baak t...@leapsecond.com; Discussion of precise time and
frequency measurement
it over.
Don Latham
Richard (Rick) Karlquist
The XT-Nano-XXL looks very interesting, and the price is good.
With these kinds of hardware devices, the question always
arises as to what to use on the other end to talk to the
device. I see that ak-nord has a virtual com port driver,
which many
AFIK, Jim. The website will have some mire info Freudian slip?). I've
stopped at XP and have a W2k that I load on to unsuspecting bare
machines...
Don
Lux, Jim (337C)
On 8/28/09 10:25 AM, Don Latham d...@montana.com wrote:
Rick, and other interested time-nuts: I think the thing to use
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To unsubscribe, go to
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--
Dr. Don Latham AJ7LL
Six Mile Systems LLP
17850 Six Mile Road
POB 134
Huson, MT, 59846
VOX 406-626-4304
www.lightningforensics.com
www.sixmilesystems.com
mailing list -- time-nuts@febo.com
To unsubscribe, go to
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and follow the instructions there.
--
Dr. Don Latham AJ7LL
Six Mile Systems LLP
17850 Six Mile Road
POB 134
Huson, MT, 59846
VOX 406-626-4304
www.lightningforensics.com
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