Thanks Ron
Thomas Knox
> Date: Mon, 26 Mar 2012 23:53:15 -0400
> From: timekeepingntpl...@c3energy.com
> To: time-nuts@febo.com
> Subject: Re: [time-nuts] New M12+ and M12M compatible GPS module
>
> Hi all,
>
> I thought I'd post this since it's related to the same company. Chris
> Alberts
Hi all,
I thought I'd post this since it's related to the same company. Chris
Albertson posted this on the NTP Questions list recently in response to
one of my queries.
quote on -->
If you are looking for a brand new timing GPS and don't like buying on
eBay, I think the best deal is going
Rich,
Would it not be better to make them a TIFF format ? While larger in size, there
would be no loss of resolution.
BillWB6BNQ
Rich wrote:
> Photoshop works with both the RAW and the PSD format.
> There are several free programs that will convert them in jpg with some loss
> of resoluti
Photoshop works with both the RAW and the PSD format.
There are several free programs that will convert them in jpg with some loss
of resolution.
If the format is a problem to people I'll see if I can convert them to jpg
but they won't be as sharp and you will loose some contrast control. The RAW
The Handbook of Frequency Stability Analysis and the Stable 32 manual
are hard copies of the pdfs that you can download free from his web site
( www.wriley.com ).
Ed
On 3/26/2012 2:34 AM, Rex wrote:
On 3/24/2012 3:54 PM, Magnus Danielson wrote:
and the Hanbook of Frequency Stability Analysis
Hi Rich,
please advise which program can I open the files...??
Rgds Ernie.
-Original Message-
From: Rich
To: time-nuts
Sent: Tue, Mar 27, 2012 12:24 am
Subject: Re: [time-nuts] FE5680A x-rays
Ok here they are:
About 30 real-time X-ray images were done in transmission
nd the i
Ok here they are:
About 30 real-time X-ray images were done in transmission
and the images were captured using the imaging system,
printed and later assembled to create a one meter scale of
the printed circuit board. A low voltage, in the 50kV range,
was used to better visualise the hidden copper
Thanks John, to put this in perspective the data sets for the good readings
might have phase wraps every 40,000 seconds or so. The data sets for the bad
adev readings might have phase wraps ever 3,000 seconds or so. Typically I
would compare two 10 Mhz signals and take one reading per second.
Thanks that's helpfull. What happened was one of my first measurement devices
and the software I was using didn't handle phase wraps properly so I took pains
to limit the frequency off set so I could gather data for 40,000 seconds or
more without phase wraps. Now I have equipment and softwar
It's a bit worse than that. The DUT and reference phase difference can't be
allowed to exceed 50 ns per trigger interval, in the case where two ~10 MHz
signals are being measured. If the frequencies disagree enough to create a
phase slope greater than that -- meaning if they are more than 5E-8 *
Charles P. Steinmetz wrote:
Bruce wrote:
A circuit schematic for a current feedback triple with reasonably low
noise and distortion is attached.
Quite a good performer for such a simple circuit. I found, both in
modeling and on the bench, that there is the usual noise bump at
200-300 MHz a
Sorry, I meant "even if the recipient is in the EU".
Interesting the proposed use of the LEA-6T time stamping...
On Mon, Mar 26, 2012 at 11:10 PM, Dennis Ferguson <
dennis.c.fergu...@gmail.com> wrote:
>
> On 26 Mar, 2012, at 12:56 , Chris Albertson wrote:
> > On Mon, Mar 26, 2012 at 12:50 PM, Att
Hi
My first guess is that your limiter is (for what ever reason) doing better
at say 1 Hz offset than it is at 10 Hz. Second guess would be that the
higher offset is closer to a noise source / spur in your lab. Past that, you
get into a lot of "that depends" things. If you are doing cross correlat
A frequency offset is allowed but must stay the same for the entire
measurement.
On Mon, Mar 26, 2012 at 11:07 PM, Mark Spencer wrote:
> Greetings, I was reviewing some older adev plots of mine and noticed that
> there may be a correlation between lower adev numbers and lower frequency
> off set
On 26 Mar, 2012, at 12:56 , Chris Albertson wrote:
> On Mon, Mar 26, 2012 at 12:50 PM, Attila Kinali wrote:
>> Moin,
>>
>> I have the numbers together for the group buy of the u-Blox LEA-6T.
>
> I have not been able to locate a spec sheet for there. Do you have a
> link? Or maybe you could s
Greetings, I was reviewing some older adev plots of mine and noticed that
there may be a correlation between lower adev numbers and lower frequency off
set between the reference source and the device under test. It's my
understanding that the adev calculations remove constant frequency off se
El 26/03/2012 22:30, Azelio Boriani escribió:
120CHF + the custom duties. Even if in the EU.
Switzerland is not part of EU :) Although it is part of Schengen Area.
Regards,
Javier
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go
120CHF + the custom duties. Even if in the EU.
On Mon, Mar 26, 2012 at 10:08 PM, Bill Riches wrote:
>
> http://www.u-blox.com/images/downloads/Product_Docs/LEA-6_DataSheet_%28GPS.G
> 6-HW-09004%29.pdf
>
> Regards,
>
> Bill Riches, WA2DVU
> Cape May, NJ
>
> -
>
> I have not been able to locate
http://www.u-blox.com/images/downloads/Product_Docs/LEA-6_DataSheet_%28GPS.G
6-HW-09004%29.pdf
Regards,
Bill Riches, WA2DVU
Cape May, NJ
-
I have not been able to locate a spec sheet for there. Do you have a
link? Or maybe you could say how these are improved over the M12M?
--
Chris Al
On Mon, 26 Mar 2012 12:56:06 -0700
Chris Albertson wrote:
> On Mon, Mar 26, 2012 at 12:50 PM, Attila Kinali wrote:
> > Moin,
> >
> > I have the numbers together for the group buy of the u-Blox LEA-6T.
>
> I have not been able to locate a spec sheet for there. Do you have a
> link? Or maybe y
On Mon, Mar 26, 2012 at 12:50 PM, Attila Kinali wrote:
> Moin,
>
> I have the numbers together for the group buy of the u-Blox LEA-6T.
I have not been able to locate a spec sheet for there. Do you have a
link? Or maybe you could say how these are improved over the M12M?
--
Chris Albertson
Re
Cape may is up as of 1600 EDST
73,
Bill, WA2DVU
Cape May, NJ
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
Moin,
I have the numbers together for the group buy of the u-Blox LEA-6T.
I can get them for 120CHF if we can get more then 10 together,
which isn't too hard i guess. Add another 3-5CHF shipping,
depending on where you live (w/o insurance).
How to order:
1) Send me a mail in private. NOT to the m
I have often seen (don't ask me how) silicon diodes getting so hot that they
unsolder themselves from the board and fall at the bottom of the equipment
enclosure, yet they work fine after the fact even though they don't look so
good.
I have been tempted to solder them back in in more than one o
Regards
Paul
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
Randy wrote:
if one is distributing 10 Mhz, does it really
matter what the circuit does at 300 and 900 Mhz??
That depends on what it is feeding and what noise
and other signals are getting to the DA
input. Some synthesized 10 MHz sources produce energy well above 10 MHz.
I consider nonmon
Pure quartz glass, which is silicon dioxide, softens (bends) at 1665C, and
melts at something around 2000C.
Softening and melting are not the same thing. At the softening point glass can
be bent without breaking, at the melting point (which is quite wide) it flows
like a liquid. It has to get a
I dont think so, pure quartz melts at, I think, 1440C but glasses (like
lead-glass) melt at much lower temperatures 500 to 600C. Remember the chemical
glass-blowing skill of the technicians.
The glass mix has to be formulated to match the expansion rate of the lead
seals. A iron alloy with a s
On Sun, Mar 25, 2012 at 04:30:44PM -0700, Jerry Mulchin wrote:
> I do know that it has 40dB of gain. But I don't
> know what the power supply voltage is suppose to be. I would assume +5VDC. If
> any has information I would appreciate getting it if possible. My usual
> friend Google was of no help.
On 3/26/2012 8:15 AM, Charles P. Steinmetz wrote:
Bruce wrote:
A circuit schematic for a current feedback triple with reasonably low
noise and distortion is attached.
Quite a good performer for such a simple circuit. I found, both in
modeling and on the bench, that there is the usual noise
It would be interesting if the FTS-1050A curves were also plotted.
Joe
From: John Ackermann N8UR
To: Discussion of precise time and frequency measurement
Date: 03/25/2012 03:54 PM
Subject:Re: [time-nuts] Distribution amp - Use a video amp unit ?
Sent by:t
Sintered means that the envelope is formed while the glass is in
a powdered form, and is then melted to fuse it into glass. The
key is they are using a very low temperature glass. For the
Dumet seals on the wires (the pink band) to work, the copper in the
seal has to be thoroughly wetted by the
Bruce wrote:
A circuit schematic for a current feedback triple with reasonably
low noise and distortion is attached.
Quite a good performer for such a simple circuit. I found, both in
modeling and on the bench, that there is the usual noise bump at
200-300 MHz and non-monotonic behavior out
On 3/26/2012 10:10 AM, Chuck Harris wrote:
The glass used to make the body of the diode melts at something like 1500C!
I think they're sintered, not melted, and it's more like 700 C -
http://www.us.schott.com/epackaging/english/glass/technical_powder/passivation.html#
_
Yes, but
The glass used to make the body of the diode melts at something like 1500C!
-Chuck Harris
ALAN MELIA wrote:
Si juctions are formed at temps of 1000C or more. Thermal failure is more likely
to be due to alloying of metal contact areas. I used to lifetest transistors up
to
360C for
Si juctions are formed at temps of 1000C or more. Thermal failure is more
likely to be due to alloying of metal contact areas. I used to lifetest
transistors up to 360C for 20 hours with power applied!! and anything up to 6
months at 200C. You cant get those temps with plastic encalsulations tho
I was only kidding a bit, since for a lot of the most common JEDEC and
also non-JEDEC conventional (as opposed to SMD) discrete components they
are similar parts with a similar numbering in SMD, and the 1N914 is one
of them - so I found it not the best example :) . However, the same
argument co
An Si junction can tolerate pretty high temperatures for a short while, or even
a long while - Bob Pease reported having had a component sat on the hot end of
a soldering iron for about 24 hours and still working afterwards ...
I've never seen a description of how they make those glass cased p
Well, *I* care...
(Damn, can't even keep a straight face hidden behind email)
Ok, well at least it's an amusing argument. Well, partially.
So, here's something I've wondered for a while: how are glass cased
diodes made? Wouldn't the temperatures needed to form the glass and
sea
On 3/25/2012 9:54 PM, gary wrote:
MMBD914 !=1n914.
1n914BWTm i.e. using a suffix, is something I haven't seen before, but
technically
1N914BWT != 1n914. That is, in the strict sense, the 1n914 has to be a
diode in that glass package.
As long as we're being pedantic, you're wrong. What you say i
To anybody else attempting to use Loran-C from Anthorn in the UK for timing
or frequency calibration purposes, I have just found out the hard way
that it's scheduled to be off air every day from today until 6th April
inclusive between the hours of 0700 and 1900 UTC :-(
Other stations in the
On 3/24/2012 3:54 PM, Magnus Danielson wrote:
and the Hanbook of Frequency Stability Analysis
You didn't mention looking at that one. Any comments about it?
___
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/
42 matches
Mail list logo
