Gentlemen,
I know that lots of you own a GPSDO, some of you two or even more. For that
reason I conclude that there must be a lot of knowledge available on how
different GPSDOs perform against each other. This is why I want to put
forward the question for the BEST GPSDO in terms of
a) phase
Tom,
We had a similar problem at a BBC site when I was selling Datum in the UK.
We managed to get round the problem with a better antenna. The third
harmonic of the UHF wasn't slap bang on L1 but close enough with a basic GPS
antenna to kill GPS.
Rob
-Original Message-
From:
For sale MA259 dual oven 5, 1, 0.1 MHz frequency standard. Oscillator
and power supply. Condition: used, working unit. Rack mount.Very good
price.
see the manual to:
http://ko4bb.com/Manuals/Racal/Racal_MA2595Mc-s_Precision_Frequency_Standard.pdf
Contact me directly, I can send picture.
Ulrich Bangert wrote:
Gentlemen,
I know that lots of you own a GPSDO, some of you two or even more. For that
reason I conclude that there must be a lot of knowledge available on how
different GPSDOs perform against each other. This is why I want to put
forward the question for the BEST GPSDO in
Have you a BVA? If you have a BVA then it is the best source for PN
measurements and, if disciplined, for AD measurements too. Anyway, for AD I
think that every GPSDOs can do (TBolt preferred).
On Fri, Sep 28, 2012 at 11:15 AM, Bruce Griffiths
bruce.griffi...@xtra.co.nz wrote:
Ulrich Bangert
Unfortunately it's not that easy. Where I lived for a long time I kept trying to
nail down various candidates on their positions on such things like ham radio
antennas and it was maddeningly frustrating. I was actually asked to run for
office at one point, maybe I should of. If nothing else the
On 9/27/12 10:41 PM, Majdi S. Abbas wrote:
On Fri, Sep 28, 2012 at 07:38:03AM +0200, b...@lysator.liu.se wrote:
Dont you have GPS/Cs locked cell networks anymore in the US?
http://www.endruntechnologies.com/cdma.htm
Björn,
Past experience with CDMA TOD references here is
I think it died pretty quickly from all of the stuff I had seen at hamfests.
Thats how I picked up my 6 X lucent RBs for nothing pretty much. Also my
180 watt rf amplifier.
Regards
Paul
On Fri, Sep 28, 2012 at 1:38 AM, b...@lysator.liu.se wrote:
Dont you have GPS/Cs locked cell networks anymore
Hi
Flag poles are prohibited.
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Randy D. Hunt
Sent: Thursday, September 27, 2012 10:24 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] BPSK
Hi
It turns out that what *should* be locked isn't always indeed locked.
Symmetricom made a bunch of boxes based on CDMA locking. They found out
about the nasty details after the fact. Made for a great bunch of stuff on
eBay though...
Bob
-Original Message-
From:
I don't think it is legal to prohibit flag poles
Sent from my iPhone and Hunter Lambert is my hero!
On Sep 28, 2012, at 8:16 AM, Bob Camp li...@rtty.us wrote:
Hi
Flag poles are prohibited.
Bob
-Original Message-
From: time-nuts-boun...@febo.com
You missread what I meant.
I meant that this Al Gore nonsense may soon be coming to a voting booth
near you. And the forces of irrationality can easily mobilize like-minded
dingbats to vote against technology.
Often the Luddites win, on politics, not science or engineering. The
general public is
Welcome to:
Regulation Nation
-John
==
Hi
Flag poles are prohibited.
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Randy D. Hunt
Sent: Thursday, September 27, 2012 10:24 PM
To: Discussion of precise
I know the WWVB news is something that's important and on-topic for this
group. However, with the discussions about zoning/regulations and the
creeping trend toward general political comment, I think it's time to
refocus.
Remember that there are 1200+ recipients of every time-nuts message,
Thank You, John
Had
K7MLR
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of John Ackermann N8UR
Sent: Friday, September 28, 2012 07:44
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] A gentle request...
I
Hello to all the Time-Nuts:
I Have been acquiring parts for a few weeks and finally have a
Thunderbolt-Trimble system up and running.
Though I would share a few pictures of what I did and how it looks now that
it is all together and working.
First, here is an overall look at what I have
Folks, I have received the following:
Dates: Between 1 to 11 October 2012 inclusive.
Times: Intermittent for 1hr slots between 0700 BST and 2130 BST.
Location of MULTIPLE jammers:
A.The Little Minch and North Minch northwards from
Looks good, but I would have gone for a different GPS antenna. The timing
antennas are weather proof. I have a Marine grade GPS antenna, also weather
proof, but the timing antennas are probably a little better since they have
less response to GPS birds on the horizon.
-Original
I had a similar experience while working on the Seiko pager watch
project some years ago. We were using DATUM GPS 9390 GPS
receivers to time the system at each FM station transmitter
site. One particular FM site on Edom Hill near Palm Springs,
California (U.S.A.) had a problem from not
Il 2012-09-28 16:53 George Race ha scritto:
Hello to all the Time-Nuts:
I Have been acquiring parts for a few weeks and finally have a
Thunderbolt-Trimble system up and running.
Though I would share a few pictures of what I did and how it looks
now that
it is all together and working.
George,
You don't know from messy. Trust me.
Burt, K6OQK
At 08:31 AM 9/28/2012, time-nuts-requ...@febo.com wrote
Picture of the messy work bench below!
http://www.mrrace.com/TrimbleGPS/TestEquipment.jpg
Comments and suggestion are always welcomed,
George
Burt I. Weiner Associates
Hi Burt,
This sounds familiar! It wasn't a guy called Rich Bailey was it? That's what
he suggested I do, but I got onto Trimble and got one of their Bullet
antennae with the 3 pole filter (Bullet III?).
That worked for us.
Rob
-Original Message-
From: time-nuts-boun...@febo.com
Picture of the messy work bench below!
http://www.mrrace.com/TrimbleGPS/TestEquipment.jpg
No way! Does not count if you can actually SEE the workbench
surface. Even the screw drivers are lined up neatly.
--
Chris Albertson
Redondo Beach, California
Hi George,
Your setup looks like a good approach to what you need for your requirements.
I was looking at the weatherproof enclosure for your antenna. If I am correct,
you have a total seal with regards to that container. The fasteners that pass
through the enclosure on the top, are they
I have a good size offering of vintage electronic equipment that I would
like to get rid of, mostly 50's and 60's stuff from HP, Tek, Boonton,
Stoddart, ect.Is it permissible to post the listing here, along with
pictures, or is there another place that would be more appropriate.
Thanks,
Hi
Legal or not, that's the way the titles are all written around here. The
logic is visual pollution. You are fine displaying the flag. It's the free
standing pole they prohibit.
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of
Hi
Probably easier to put the pictures up on Photo Bucket or some other free
picture site. Then refer to them in a message. That way you don't choke a
bunch of email servers...
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of
Yes, Rob, It was Rich Bailey. A good guy! He worked for DATUM in
Anaheim, CA and as I recall, he lived in Riverside. I noticed that he
didn't wear a watch and when I jokingly commented about it,
considering what he did for a living, he told me that he had been so
aware of precise time for so
Not sure it's a good idea to seal the antenna in a plastic box.
Must get hot in there. And mounting it under a big Yagi?
I considered using a puck antenna and protecting it with a
black plastic conical cap that is used to keep seagulls off
the top of dock pilings. Air could circulate under the
Nice job George
73,
Bill, WA2DVU
Cape May, NJ
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On 9/28/2012 12:10 PM, George Race wrote:
I have a good size offering of vintage electronic equipment that I would
like to get rid of, mostly 50's and 60's stuff from HP, Tek, Boonton,
Stoddart, ect.Is it permissible to post the listing here, along with
pictures, or is there another place
The US changed over to the rest-of-world patent system, where patent
applications are public for a period before grant, precisely to get
input from the entire technical community.
The granted patent (8270465) would be hard to overturn at this point.
As for the patent application
George,
Don't need much of a hole. I wouldn't go past a single 1/16 one or so. That
would be small enough to keep most critters out of the container.
From what I can observe, that gasket is recessed down below the inner surface
of the cover with the container inverted as it is. Any moisture
George
I think as a non professional time-nut a list is fine. Always good to find
good homes over the trash bin. The big problem I think for all time-nuts is
the ebay folks coming to town.
I would be interested in what you have please email me directly.
Regards
Paul
On Fri, Sep 28, 2012 at 12:18
Hi Bill, see my comments below.
Not sure it's a good idea to seal the antenna in a plastic box.
Definitely will vent it from the bottom!
Must get hot in there. And mounting it under a big Yagi?
Uda would be pleasantly surprised to see what has evolved from his first
antenna!
I considered using a
After thinking about it for a bit, I am not going to post my equipment list
here.
Instead it will be on the EEVBlog.
After I do the listing I will post a link here so those of you who may have
interest can take a look.
On the EEVBlog they encourage advertising your used equipment
Ulrich,
I think this is a bit like discussing one's favourite wine or favourite
stereo! Especially since many of the participants here will not have the
capability to compare GPSDO performance reliably.
I have a few GPSDOs, and it's my impression that of them all the Agilent
Z3815A with
I did put a dab of jell super glue on each of the screw heads, after they
were tightened down, I then wiped them clean. Maybe a bit of RTV would be
appropriate as well.
If you are trying to weatherproof an outdoor item, you will probably
find that 3M 5200 marine adhesive/sealant is the
I have lots of little switch boxes, matching networks, amplifiers, etc,
mounted outside, usually in gasketed boxes from Bud and Hammond. I put a
0.050 hole in the bottom of all of them. It has proven to be large enough
to stay clear of debris and small enough to keep little critters out. I
even
I don't see what the problem is
with HOA's and antenna restrictions.
I just put a mag-mount antenna on the car
that's up on blocks in the driveway.
( a bit of Mississippi humor for your Friday afternoon :-) )
peace!
Chris
Columbus, MS
___
This illustrates a process lost to many building data demods.
There is no need in many cases to be a hurry to get the from the front door
to the back door of a process.
Iterative processing of the demodulation process, each step making a best
but poor estimate, and the reprocessing the stream
The secret is to keep your equipment warm(er), then when the trapped humid
air condenses, it condenses on a colder surface, hopefully eventually
running down to the hole you left at the lowest point. The existence of such
a hole, that is a non fully sealed package, means there is less chance for
how important is the close in phase noise of a 10MHz reference? I
means after all, the oscillator you are measuring, say the local
oscillator in a receivers or whatever, is likely not running at 10MHz
so you have some step where you convert your t-bolt reference to the
desired freq. using either
Hi:
Includes some reference to time.
http://www.ted.com/talks/john_lloyd_an_animated_tour_of_the_invisible.html
--
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
___
time-nuts mailing list --
Normally outdoor enclosures and antenna radomes contain some sort of small
weep hole to drain any moisture that may enter the enclosure or vent to
equalize pressure changes with temperature.
Not mine. The outdoor timing GPS antennas I have use an O-ring to
form a completely 100% waterproof
Hi,
I have a Wenzel oscillator that I don't remember where I got it.
I think I removed it from an instrument as it has a sticker on it labeled
A3A1.
It's a model 500-09802D 5Mhz oscillator with 2 BNC and one SMA
connectors, a ground pin and 3 other pins.
The label indicates +15 and +20VDC.
Here is the link where you can download or look at the pictures of the used
equipment I have available.
http://www.eevblog.com/forum/buysellwanted/vintage-50%27s-60%27s-test-equipm
ent-available/msg149549/#msg149549
Please let me know if you need information on any or all of the items.
Link does not work.
73, Dick, W1KSZ
-Original Message-
From: George Race geo...@mrrace.com
Sent: Sep 28, 2012 2:35 PM
To: 'Discussion of precise time and frequency measurement' time-nuts@febo.com
Subject: [time-nuts] Link to 50's 60's test equipment that I would like to
get rid of
Hi George:
I would be interested in the Tektronix RM17 and maybe the Tektronix 515.
Do you have a UPS Store or the like near you? You can let them do the
packing with extra bubble wrap for the front panel of the scope(S).
Thanks,
Ron
-Original Message-
From: time-nuts-boun...@febo.com
completely 100% waterproof seal; famous last words, in the absence of a
dry nitrogen pressurization.
Lester B Veenstra MØYCM K1YCM W8YCM
les...@veenstras.com
US Postal Address:
5 Shrine Club Drive
HC84 Box 89C
Keyser WV 26726
GPS: 39.33675 N 78.9823527 W
Telephones:
Home:
http://www.eevblog.com/forum/buysellwanted/vintage-50%27s-60%27s-test-equipm
ent-available/msg149549/#msg149549
Link does not work.
It's fairly common for mail sending software to break long URLs.
You can usually spot it and glue the chunks back together by hand.
--
These are my opinions.
Chris - your solution worked for me - until the grass covered my old PU
truck.
-73 john k6iql
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and follow the instructions
If you don't get all the H20 out, which for the regular Joe is very
hard to do having the small vent hole is the way to go.
If your worried about critter, there are quite a few hole plugs
available just for this purpose.
-pete
On Fri, Sep 28, 2012 at 1:36 PM, Lester Veenstra
I just entered the following, from below, and it worked.
http://www.eevblog.com/forum/buysellwanted/vintage-50%27s-60%27s-test-equipm
ent-available/msg149549/#msg149549em
I think the problem may be that it wrapped around and you have extra
possibly in the middle.
George
-Original
I did a copy and paste of the entire URL and it still won't work. Maybe
the site doesn't like Firefox or those % signs are corrupting it.
That's why God invented TinyURL !!
73, Dick, W1KSZ
-Original Message-
From: George Race geo...@mrrace.com
Sent: Sep 28, 2012 4:28 PM
To:
HI
Sort of an open ended question, but there is a fairly simple couple answers:
SInce it's close in phase noise and not far removed, things like PLL's are
going to transfer it directly from the reference to the output. It will of
course scale by 20 log N where N is the amount you multiplied or
copy/ paste into MSWord. take out the carat and do a return (enter) at the
end.
It will turn blue (link) and it will connect using a ctrl-enter.
-Don
--
From: Richard W. Solomon w1...@earthlink.net
Sent: Friday, September 28, 2012 7:12 PM
There is a space after 49em which messes up a copy if you don't watch out.
I tried bitly and and tinyrul couldn't get it to work with the
contracted link. They aren't
storing something.
George's is a far distant competitor to the bench of the late Jim
Williams, see
http://www.computerhistory.org/atchm/an-analog-life-remembering-jim-williams/
Which was on display at the Computer History Museum and just was
returned to Linear Tech.
Grant Saviers
There is a comma in equipment messing that link up
Sent from my iPad
On Sep 28, 2012, at 7:54 PM, jim s j...@jwsss.com wrote:
There is a space after 49em which messes up a copy if you don't watch out.
I tried bitly and and tinyrul couldn't get it to work with the contracted
link. They
Another serious contender in the messy but productive realm was Bob Pease.
http://www.eetimes.com/electronics-blogs/social-mania-blog/4217103/How-messy-is-your-desk-
Quite ironic that Bob died while leaving the memorial for Jim Williams.
Close in phase noise is of utter importance to radar applications that rely on
Doppler frequency shift. Think trying to detect walking intruders at the border.
Frequency synchronization is important if one tries to link up multiple radar
units.
Thus good to great Adev and phase noise is needed
On 9/28/2012 7:46 PM, Bill Dailey wrote:
There is a comma in equipment messing that link up
http://www.eevblog.com/forum/buysellwanted/vintage-50%27s-60%27s-test-equipm,ent-available/msg149549/#msg149549em
On Fri, Sep 28, 2012 at 5:29 PM, Bob Camp li...@rtty.us wrote:
HI
Sort of an open ended question, but there is a fairly simple couple answers:
SInce it's close in phase noise and not far removed, things like PLL's are
going to transfer it directly from the reference to the output. It will
I've also had some odd dealings with Rich Bailey. Some time in the mid 1990's
I was a contractor at a USN cal lab. We had sent out a Datum time code
generator for repair, and when it came back, one of the functions didn't work.
I called Datum and after describing the problem, the tech
And Bob Pease trumps all:
http://eetimes.com/electronics-blogs/other/4217103/How-messy-is-your-desk-
There is even a gallery of 24 of Engineering's messiest desks here:
http://www.eetimes.com/electronics-blogs/social-mania-blog/4217145/Photo-gal
lery--Engineering-s-messiest-desks
My primary
yep, and you always wind up working on the inch of bench just in front
of your belly...
Don
Latham's law of horizontal surfaces states Any bare horizontal surface
immediately becomes covered with junk.
Rex
Another serious contender in the messy but productive realm was Bob
Pease.
On Fri, Sep 28, 2012 at 3:04 PM, Lester Veenstra les...@veenstras.com wrote:
completely 100% waterproof seal; famous last words, in the absence of a
dry nitrogen pressurization.
The Antenna is many years old. I opened it up a while back to look to
see how the antenna was designed inside. (it
Don wrote.
Latham's law of horizontal surfaces states Any bare horizontal surface
immediately becomes covered with junk.
I thought I held the copyrights on that one. Oh well, never mind.
Regards.
Max. K 4 O DS.
Email: m...@maxsmusicplace.com
Transistor site
Not gonna work with my Amish neighbors a couple miles up the road.
They have a dead horse up on blocks in their driveway. Non magnetic.
Have a fantastic weekend everyone!
Dave
-Original Message-
From: time-nuts-boun...@febo.com
[mailto:time-nuts-boun...@febo.com] On Behalf Of
Proof of an axiom: Great minds run on the same track.
:-) (although strictly speaking, an axiom requires no proof...)
Don
Max Robinson
Don wrote.
Latham's law of horizontal surfaces states Any bare horizontal surface
immediately becomes covered with junk.
I thought I held the copyrights on
On 9/28/2012 8:31 PM, Chris Albertson wrote:
You can guess the real question here: how good does the 10MHz
reference need to be to test real-world receivers?
Pretty sure the answer is good enough, but... Depends on the receiver
and what it is receiving.
I got interested in time-nuttyness
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