Yet another... please add me to the list... I'm very interested. Thanks!
On 11/19/2012 2:04 PM, cdel...@juno.com wrote:
MINI-TIC for DMTD work
Hi Everyone!
I've been testing a Miniature 2 channel TIC that Bert Kehren and Juerg
Koegel
and Richard Mc Corkle have designed.
It has 9
I live at 39° 57' 46 N and I absolutely HATE DST! Yes, Indiana... we
haven't had DST for too long. It's bad and I hope some day we go back to
not having it.
- Original Message -
From: Rob Kimberley r...@timing-consultants.com
To: 'Discussion of precise time and frequency
Did I miss something? I've searched but can't find anything about this
one...
Could someone please point me to the info on this?
73 Brice KA8MAV
-
No virus found in this message.
Checked by AVG - www.avg.com
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...and I used to think batteries were a good/clean source of power. They
are better than a linear power supply... yet they make very good temperature
sensors too!
What is the perfect source of power? Clean, no ripple, no variation based
on temperature, etc.?
- Original Message -
just all strive to make/build a
*better* one.
- heathkid
- Original Message -
From: Magnus Danielson mag...@rubidium.dyndns.org
To: time-nuts@febo.com
Sent: Tuesday, February 15, 2011 6:34 PM
Subject: Re: [time-nuts] Tool Needed to Access my Timer Battery
snip
Besides this thread
BLING?
Really? Seriously? A watch is considered bling now? Can you build a
mechanical watch in your workshop that is as accurate as those manufactured
100 years ago? That's technology! Otherwise, a precision watch
mechanical or electronic is just as on-topic as a Cs standard and I'd
If you need a GPS antenna splitter... these are incredible! Thanks Mike!
- Brice
- Original Message -
From: Mike Feher mfe...@eozinc.com
To: 'Discussion of precise time and frequency measurement'
time-nuts@febo.com
Sent: Friday, February 04, 2011 9:25 PM
Subject: Re: [time-nuts] GPS
Time for me to jump in on the Form Factor...
How about something like this: http://www.blacet.com/
It's the smaller of the modular synths but Blacet can provide the racks and
a VERY quiet power supply (+/- 15V). The benefit to this is, the module can
be as wide as it needs to be... we can
Here are some exploding targets that are legal:
http://www.tannerite.com/
A friend uses them and swears by them.
On 11/3/2010 11:28 PM, jimlux wrote:
Michael Conlen wrote:
There's always nitroglycerin. I've heard it reacts well to vibration.
nitromethane is much more readily available and
degenerated into nothing having to do with
time measurement. I tend to restrict myself but felt I really needed to
point out that legal in one place doesn't make it legal everywhere all
of
the time.
-Bob
(p.s. tannerite is flippin' awesome!)
On Thu, Nov 4, 2010 at 11:23 AM, Heathkid heath
Not to chime in here... but at 800 yards (and what you are proposing - I
have a very good idea what you're shooting based on what you've stated)...
there should only be one hole.
I have some friends that shoot .308 to 20mm - and larger (although the .338
Lapua gets special attention) and may
Isn't that a relative question? a lot of spare time on your hands? I
have very little and each uS extra I have is a blessing. Time? Really?
Maybe I'll just have the year I die engraved. After all, even the year is
subjective (which calendar are you using as a reference?)... Maybe it'll
This sounds like a new project/kit... a TOD clock. Simple... monitor
heartbeat (easy enough and I know it's not the only thing involved but if it
stops... so do you usually... but KISS should be kept in mind for this or it
gets WAY to complicated). Heartbeat and PPS... with GPS and/or/with a
Backup images are fine... but has anyone considered or tried to contact the
original programmers to get the actual code used? I'm sure there wouldn't
be any reason someone would still consider 30+ year old code a trade
secret and if one had the original code... could reasonably replicate an
of the listed frequencies are usable in the US, you would do
better
buying an ATOMIC clock at your local Walmart for around $20. That way
you also
get a nice display and it includes the same basic receiver inside.
BillWB6BNQ
Heathkid wrote:
Has anyone here bought one of these and given it a try
Has anyone here bought one of these and given it a try?
http://www.sparkfun.com/commerce/product_info.php?products_id=10060
Looks like it might be fun to play with...
73 Brice KA8MAV
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Doesn't someone on here with a Ham license have a Cs standard and could
put up a 1pps signal? Simply transmit your callsign within the 1pps (there
has to be a way) and we have a non-Govt. time standard if needed. A
simple 1pps PSK-31 (or other digital mode) signal would probably work and be
time-nuts@febo.com
Sent: Monday, October 04, 2010 11:39 PM
Subject: Re: [time-nuts] 60 KHz Receiver
Heathkid wrote:
Doesn't someone on here with a Ham license have a Cs standard and could
put up a 1pps signal? Simply transmit your callsign within the 1pps
(there has to be a way) and we have
One more note before I just read the posts for a while...
a) broadcasts aren't legal for US hams
Do some reading on telemetry and when broadcasts ARE allowed. I've been a
Ham for more than 30+ years.
b) ionospheric uncertainty in the skywave path makes this no better than
WWV
No
k6rtm
--
Message: 3
Date: Sun, 26 Sep 2010 15:56:47 -0400
From: Heathkid heath...@heathkid.com
Subject: Re: [time-nuts] DS1620 Variants in the Thunderbolt
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Message-ID: 795f7aa593814ecb9aa24f0b55cad
Thanks for all the information on the DS1620.
As it turns out, both of the TBolts (remember I got the from two different
sellers and appear identical) have the Trimble OCXO, v3.00 firmware, but the
DS1620's are marked as follows:
DS1620
0415E2
531AD
DS1620
0239D1
690AB
Interestingly, the
I wouldn't go by the photos posted as even the item shipped is *not* what is
shown (stock photo?).
Anyway, I've gotten two TBolts (one from each vendor you linked to) and they
are *identical*. Same in every way as if from the same stock. I can say I
have been very happy with my purchases
Okay, let me ask this a different way in a new thread...
What is the higher resolution variant of the DS1620 and how can one tell the
difference from the chip markings?
Thanks...
Heathkid
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You're welcome Peter. I'm glad I was able to finally provide
something useful. :)
Hopefully others found it an interesting read as well. I have two
Thunderbolts and am trying to figure out how far apart I should mount
the antennas. Further apart reduces the changes of multpath to both
Peter,
I'm not sure if you're still looking for ideas but I ran across this article
which explains in a lot of detail the design of the radome for a GPS
antenna:
http://www.ias.ac.in/currsci/jan252006/207.pdf
73 Brice KA8MAV
- Original Message -
From: Peter Krengel
Stanley,
Did I already send you payment for the expanded version? I'm still not
getting any emails from you except from the list. What's the status of the
Small DMTD Project? There hasn't been a word about it for a *long* time.
73 Brice KA8MAV
- Original Message -
From: Stanley
Bob,
Don't get me started on my Davis Instruments Vantage Pro 2 with BIRDS...
and the rain bucket! ;) How many times have you cleaned yours out this
year? Spiders and Wasps are the worst. But... unfortunately, my flag pole
is now the weather station mount (wireless version) and it's too
Sounds like the parts of a salvaged SEM would be a good start for a
project such as this (assuming the diffusion pump is included - I've been
looking for one for a while but it seems the pumps are almost *always*
missing). But still, if you could find one locally (freight is $$$) there
are a
Surplus (free to good home table)? Try finding someone who works with these
pumps every day who will even part with an OLD pump (even if it doesn't
work) just because... a broken spare is better than not having anything at
all. ;)
- Original Message -
From: jimlux
To: time-nuts@febo.com
Sent: Wednesday, September 01, 2010 2:51 PM
Subject: Re: [time-nuts] homebrew maser
On 09/01/2010 04:11 AM, Heathkid wrote:
How about a Laser-Cooled Mercury Ion Frequency Standard?
http://tf.nist.gov/general/pdf/1225.pdf
I have way too little liquid helium dewar flasks
How about a Laser-Cooled Mercury Ion Frequency Standard?
http://tf.nist.gov/general/pdf/1225.pdf
Here's another approach:
A diode-laser optical frequency standard based on laser-cooled Ca
atoms:Sub-kilohertz spectroscopy by optical shelving detection
Has anyone started putting together a Mouser Project for the Small DMTD
project yet?
73 Brice KA8MAV
- Original Message -
From: Stanley Reynolds stanley_reyno...@yahoo.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Monday, August 16, 2010 10:38
Hal,
Actually, there are many stars that can be seen with a telescope (don't
point it at the sun!) during the day *IF* you know precisely where to look.
The sky may be blue and bright... but it's still full of stars.
73 Brice KA8MAV
- Original Message -
From: Hal Murray
Stanley, to add to what you already have, I'd recommend:
Rb Standards
Cs Standards
Other Oscillators
GPS
Test Equipment
and always a good one... Getting Started.
73 Brice KA8MAV
- Original Message -
From: Stanley Reynolds stanley_reyno...@yahoo.com
To: time-nuts@febo.com
Sent:
I think Manuals would be a great addition; however, there are already so
many places to download them and so many manuals out there... maybe a
sticky list of sources would be best. Microprocessors gets a bit off
topic as *everyone* has an opinion and their own favorite. That said...
Stanley,
I was under the impression you already had the permission of the *founders*
to use the time-nuts name to start up this new forum. Was I mistaken?
73 Brice KA8MAV
- Original Message -
From: WB6BNQ wb6...@cox.net
To: Discussion of precise time and frequency measurement
Stanley,
I'm not getting *any* emails from you privately. So, can you please confirm
I'm on the list for a set of boards for this project (expanded system)?
Also, is anyone stepping up for the PIC programming? Also, for some of the
more expensive or harder to get components... would anyone
Stanley,
Are you ready to accept payments for these now or are you still working out
the details? I would want the 3rd PICTIC II option for the expanded DMTD.
73 Brice KA8MAV
- Original Message -
From: Stanley Reynolds stanley_reyno...@yahoo.com
To: Discussion of precise time and
Brice KA8MAV
- Original Message -
From: Stanley Reynolds stanley_reyno...@yahoo.com
To: time-nuts@febo.com
Sent: Saturday, August 14, 2010 12:56 PM
Subject: [time-nuts] Fw: What's the latest correct PICTIC II
Mouserproject?-Heathkid
Duplicate message without in-line picture
Reynolds stanley_reyno...@yahoo.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Saturday, August 14, 2010 10:43 AM
Subject: Re: [time-nuts] What's the latest correct PICTIC II Mouserproject?-
Heathkid
snip
Maybe we should buy lots of diodes to match them
/2010
John K1AE
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Heathkid
Sent: Friday, August 13, 2010 1:48 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] What's the latest correct PICTIC II Mouser
project?- Heathkid
Hi
Shortages... what shortages :)..?
The two offending resistors have been bumped to 1% standard values from
5% standard. Functionally there should be no difference at all.
Sorry for the delay in getting it up dated.
Bob
On Aug 13, 2010, at 1:47 AM, Heathkid wrote
All this talk about regulating a pendulum clock... are you people buying
them, building them, or what?
I'm interested! I keep thinking about it and something keeps bringing me
back to the bob being a neodymium magnet itself. I'm sure you can guess
where I'm headed with that...
73 Brice
If there are multiple Mouser projects... which one is best (least
backordered parts) and highest quality parts? Please send a link. Thank
you in advance.
Has anyone started updating the project to include substitutes?
73 Brice KA8MAV
- Original Message -
From: Leigh L. Klotz, Jr.
-place for a much cheaper alternative.
Bob
On Aug 1, 2010, at 8:18 PM, Heathkid wrote:
I just purchased a HP 5335A and would like to know the group's
opinion on the following:
http://www.sparkfun.com/commerce/product_info.php?products_id=549
73 Brice KA8MAV
Thanks John! I'll give it a try in the morning and let you know the
results.
73 Brice KA8MAV
- Original Message -
From: John Miles jmi...@pop.net
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Wednesday, August 04, 2010 12:52 AM
Subject: Re:
another buy worthwhile.
Bob
On Aug 1, 2010, at 4:59 PM, Heathkid wrote:
Hello. Does anyone have any of these left? I've checked with a couple of
the
guys that did a group buy but they are out of them. I'd prefer not to do
SMT
and don't really want to buy 50+ from an unknown surplus seller.
I
Hello. Does anyone have any of these left? I've checked with a couple of
the guys that did a group buy but they are out of them. I'd prefer not to
do SMT and don't really want to buy 50+ from an unknown surplus seller.
I need six (6) - or at least one or whatever someone has to get me
I just purchased a HP 5335A and would like to know the group's opinion on
the following:
http://www.sparkfun.com/commerce/product_info.php?products_id=549
73 Brice KA8MAV
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:01 -0400
From: Heathkid heath...@heathkid.com
Subject: [time-nuts] HP 5335A and HP-IB (GP-IB)
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Message-ID: bae12857a7b84a4494ffab0bbabbd...@d1x25bd10
Content-Type: text/plain; format=flowed; charset=iso-8859-1;
reply
Hello everyone. It seems I'm not receiving all emails from the list. I'm
checking on two PCs (one IMAP and one POP3 both set to not delete emails
from the server) and neither one have all the emails I'm finding in the
archives. I'm actually missing entire days. I haven't figured out what
/07/2010, Heathkid heath...@heathkid.com wrote:
Last night, as suggested by several people on this list... I ordered a
Trimble Thunderbolt from Bob Mokia, fluke.l so I should be in pretty
good
shape there to get started once it arrives.
Sounds like your starting on the long path to time-nuttiness
and frequency measurement
time-nuts@febo.com
Sent: Sunday, July 25, 2010 8:40 AM
Subject: Re: [time-nuts] Symmetricom X72
Excuse my replying to my own posting please.
This post is really about the DFD1 frequency counter.
Heathkid: You are comparing a Rb against a frequency counter with a
TCXO
with oddball frequencies in the vicinity of
their intended output.
Bob
On Jul 24, 2010, at 5:46 PM, Heathkid wrote:
Bob, so you're saying the Efratom LPRO is better than the three
FE-5680A's I already have? Sounds like I do need a TBolt anyway.
- Original Message - From: Bob Camp li
sheet it's not really very impressive.
Bob
On Jul 23, 2010, at 11:06 PM, Heathkid wrote:
Hello. Does anyone have any experience with the Symmetricom X72?
Thanks...
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https
to match a known good
reference.
Once you have the Rb and the TBolt, next step is up to you. Cesium is
always an alternative, so's a Hydrogen Maser
Bob
On Jul 24, 2010, at 3:32 PM, Heathkid wrote:
Hello Bob,
What would you recommend? I already have three FE-5680A Rb standards
(which
Anyone around here close to central Indiana with a Cesium Reference? :)
73 Brice KA8MAV
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and follow the instructions there.
Can someone please send me information on ordering programmed PICs?
It seems I arrived at the Pictic II party a bit late (I really need a
better clock) and digging back through all the messages has me lost.
I've only recently joined time-nuts and searching archives isn't easy.
Thank you so
Hello. Does anyone have any experience with the Symmetricom X72?
Thanks...
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Hello. I'm new to this list but have 3 Rb standards and am looking at
measuring time (or drift between them). What is the most important piece of
NIST calibrated test equipment I need to own? Is 3 enough using two Rb
standards as a reference/control group (considering the 3rd can vote before
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