I finally broke down and bought one too- mine took about 10 days to get to the
west coast.
-Dave
- Original Message -
From: paul swed paulsw...@gmail.com
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Friday, December 30, 2011 7:27:13 AM
Subject:
PI controllers can be implemented analog only. For the PPS they need
large capacitors that are the equivalent of averaging (sum and accumulate)
in a software implemented controller.
On Sat, Dec 31, 2011 at 7:54 AM, Chris Albertson
albertson.ch...@gmail.comwrote:
On Fri, Dec 30, 2011 at
In my opinion you have to look at it from the point of application.
Hopefully I will be able to share the test results soon. For us DNL is key, INL
is specked over the full range and since we use it in a filter application,
based on the data that I have, can be ignored.
In a Rb application
That would be a mighty small skirt
On Fri, Dec 30, 2011 at 11:21 PM, Said Jackson saidj...@aol.com wrote:
Mine was declared a woman's silk shirt for some reason.. Not sure why.
Sent From iPhone
On Dec 30, 2011, at 17:41, li...@lazygranch.com wrote:
I got a feebay shipment from China
When I asked one seller to mark the correct value and description, he explained
to me that they have to mark it as a low value item and call it something
allowed by their postal system! Usually they mark it as a gift!!
When I got a Rubedium osc.. I was hauled up by customs and the officer saw
Just to be clear ... you (the USPS) are subsidizing the Chinese Postal
System. Who do you think pays for the delivery of your package once it
hits our shores.
73, Dick, W1KSZ
-Original Message-
From: Said Jackson saidj...@aol.com
Sent: Dec 30, 2011 9:21 PM
To: li...@lazygranch.com
But if you send something to China, who do you think pays for the delivery
there?
- Original Message -
From: Richard W. Solomon w1...@earthlink.net
To: Discussion of precise time and frequency measurement time-nuts@febo.com
Sent: Saturday, 31 December, 2011 4:30:38 PM
Subject: Re:
But Chinese postmen (postwomen) get paid a lot less than USPS employees.
-John
But if you send something to China, who do you think pays for the delivery
there?
- Original Message -
From: Richard W. Solomon w1...@earthlink.net
To: Discussion of precise time and
I'm finding this thread a great source of amusement. It's no wonder the
Chinese are eating our lunch. First, intellectual property is an
oxymoron to them. Second, cheating is a way of life; root hog or die.
Third, push the system until it burps, then back off just a little.
Actually, I enjoy low
Chris
Here is a GPSDO I built that better fits Your definition of Simple. I used
this as my freq standard before getting a TBolt.
1) Feed the PPS output of an oncore GPS timing engine which has 1 Hz or
better yet 100 Hz output to the clk of a D FlipFlop (74HC74)
2) Feed the FF's D from a
I'm also enjoying all the feedback since my original post.
I look at this way; these Rubidiums are probably in the region of $1000 new.
We're getting them for a song. OK, you take the risk of the odd dud, but
that's the way of fleabay. I will let you all know how UK Customs performs
on my
I agree that they are an amazing value but what kind of operating
lifetime do the Rb tubes have? SRS has this to say:
Historically, the lifetime of rubidium frequency standards has been
dominated by rubidium depletion in the discharge lamp. To avoid excess
flicker noise, manufacturers would load
They seem to run a while especially if you reheat the bulb as discussed
several times in these threads. So for $38 I am taking the gamble. Have
5 older units and have recovered one of them by reheating the lamp. So far
the others are good and I do not run those 24 X 7. Instead should the main
I think this is the simplest design that can still work, just one flip
flop, divider and a capacitor.
What level of performance did you get?I think it depends on how big the
integrating capacitor is and how stable the VCXO is. I guess if you
switched to using the t-bolt the performance was
Chris posted:
What level of performance did you get?
Correct it depends on what parts you use and how nutty you want to get.
So much also depends on how you define performance, and where you want to
compromise.
Compared to WWV and WWVB it was much better, Compared to a correctly set up
TBolt
The HBG has survived the 00:00 CET and the 00:00 UTC. I was fulfilling the
task of recording the final transmission instant but now I don't know how
to proceed. Unfortunately I have no audio time lapse recorder at hand and I
have no more ideas about the time when they will shutdown.. Maybe I have
Probably when the hung over teckies get back in to work in a state they can
find the off switch :-))
Alan G3NYK
- Original Message -
From: Azelio Boriani azelio.bori...@screen.it
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Sent: Sunday, January 01, 2012
Must live under a rock. Did not know HBG was going away.
On Sat, Dec 31, 2011 at 7:23 PM, Alan Melia alan.me...@btinternet.comwrote:
Probably when the hung over teckies get back in to work in a state they can
find the off switch :-))
Alan G3NYK
- Original Message -
From: Azelio
UBLOX TIM-CJ module TIM-ST GPS engine Jupiter footprint
anyone have any experience with this for timing application?
N0UU
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I find it peaceful under rocks.
Happy New Year all!
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of paul swed
Sent: Saturday, December 31, 2011 6:31 PM
To: Discussion of precise time and frequency measurement
Subject: Re:
OTH, if it's an OCXO, then the thermal time constants can be made large
thermos bottles, etc.?
Don
WarrenS
Chris posted:
What level of performance did you get?
Correct it depends on what parts you use and how nutty you want to get.
So much also depends on how you define performance, and
As soon as you say Software the device is no longer simple.Even a
microprocessor is a very complex device and so is its development system.
The software inside the uP is not simple either if you count the number of
possible paths through the code (2 raided to the power of the number of
On Sat, 31 Dec 2011 17:56:46 -0800, Hal Murray
hmur...@megapathdsl.net wrote:
This looks like fun to me, but I like writing that sort of code. Note that
it doesn't need an OS or even any libraries.
Both designs look fun to me but for different reasons. The analog
design requires attention to
On Sat, Dec 31, 2011 at 5:56 PM, Hal Murray hmur...@megapathdsl.net wrote:
As soon as you say Software the device is no longer simple.Even a
microprocessor is a very complex device and so is its development system.
The software inside the uP is not simple either if you count the number
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