On Fri, 25 Apr 2014 20:19:42 +0200
Björn Gabrielsson b...@lysator.liu.se wrote:
On Fri, 25 Apr 2014 12:21:04 -0400 (EDT)
gandal...@aol.com wrote:
Coincidentally, I came across this earlier today when looking for
some MMIC data, perhaps it might be worth a look?...
On 04/25/2014 06:04 PM, Attila Kinali wrote:
On Fri, 25 Apr 2014 08:42:16 -0700
Chris Albertson albertson.ch...@gmail.com wrote:
You best bet is to change out the antenna. You can buy them with a higher
built-in gain up to about 40dB.
Buying a better antenna is also on the list. But i
On 04/25/2014 06:21 PM, gandal...@aol.com wrote:
Coincidentally, I came across this earlier today when looking for some
MMIC data, perhaps it might be worth a look?...
http://lna4all.blogspot.co.uk/
This is the 0,5 dB NF amplifier from Minicircuits and I think it is an
interesting
On 04/25/2014 08:19 PM, Björn Gabrielsson wrote:
On Fri, 25 Apr 2014 12:21:04 -0400 (EDT)
gandal...@aol.com wrote:
Coincidentally, I came across this earlier today when looking for some
MMIC data, perhaps it might be worth a look?...
http://lna4all.blogspot.co.uk/
Now that's
On Sat, 26 Apr 2014 12:25:11 +0200
Magnus Danielson mag...@rubidium.dyndns.org wrote:
If you have a passive antenna, put a LNA right at the antenna, since any
cable damping will cause the S/N to go down. Also, if you put an
aditional amplifier in line, your want that too up at the antenna.
Hi
The ability of these receivers to handle noisy signals depends on a lot of
things. The good stuff seems to have a massive number of correlators. Going
from a 1.3 to a 0.3 db nf amp likely only helps you by 1 db. The low
correlateor GPS’s are / were 10 to 20 db less sensitive than the newer
On Sat, 26 Apr 2014 08:20:47 -0400
Bob Camp li...@rtty.us wrote:
The ability of these receivers to handle noisy signals depends on a lot of
things. The good stuff seems to have a massive number of correlators. Going
from a 1.3 to a 0.3 db nf amp likely only helps you by 1 db. The low
Attila,
On 04/26/2014 12:52 PM, Attila Kinali wrote:
On Sat, 26 Apr 2014 12:25:11 +0200
Magnus Danielson mag...@rubidium.dyndns.org wrote:
If you have a passive antenna, put a LNA right at the antenna, since any
cable damping will cause the S/N to go down. Also, if you put an
aditional
On 04/26/2014 02:59 PM, Attila Kinali wrote:
On Sat, 26 Apr 2014 08:20:47 -0400
Bob Camp li...@rtty.us wrote:
The ability of these receivers to handle noisy signals depends on a lot of
things. The good stuff seems to have a massive number of correlators. Going
from a 1.3 to a 0.3 db nf amp
Shane,
The trade off for most applications is as follows:
Rb has much faster stabilization time after power on. Ocxos suffer from
retrace, that can take hours to days to get rid off. Retrace could cause a
frequency shift of several ppb or more from say 15 minutes after power on
compared to 10
On 04/26/2014 06:34 PM, Said Jackson wrote:
Shane,
The trade off for most applications is as follows:
Rb has much faster stabilization time after power on. Ocxos suffer from
retrace, that can take hours to days to get rid off. Retrace could cause a
frequency shift of several ppb or more
On Sat, 26 Apr 2014 12:28:20 +0200
Magnus Danielson mag...@rubidium.dyndns.org wrote:
On 04/25/2014 06:21 PM, gandal...@aol.com wrote:
Coincidentally, I came across this earlier today when looking for
some MMIC data, perhaps it might be worth a look?...
I just tried to run SatStat for the HP Z3801A on my new Windows 7 64-bit
computer and it reported it would not run under that OS.
What are folks using?
--
Best wishes,
Larry McDavid W6FUB
Anaheim, California (SE of Los Angeles, near Disneyland)
___
Old W98 or W2k machines work for me.
From Tom Holmes
On Apr 26, 2014, at 1:29 PM, Larry McDavid lmcda...@lmceng.com wrote:
I just tried to run SatStat for the HP Z3801A on my new Windows 7 64-bit
computer and it reported it would not run under that OS.
What are folks using?
--
winxp
On Sat, Apr 26, 2014 at 1:35 PM, Tommy phone thol...@woh.rr.com wrote:
Old W98 or W2k machines work for me.
From Tom Holmes
On Apr 26, 2014, at 1:29 PM, Larry McDavid lmcda...@lmceng.com wrote:
I just tried to run SatStat for the HP Z3801A on my new Windows 7 64-bit
computer
Magnus wrote:
The PRS-10 have a nice little trick in it, it stores the previous
OCXO steering value, so on power-up it sets the OCXO to this
The PRS-10 has quite a number of nice tricks, in addition to
particularly good engineering and high-quality construction of the
basic physics package
Hi
Upgrade to a Win 7 version that has XP support in it.
Bob
On Apr 26, 2014, at 1:29 PM, Larry McDavid lmcda...@lmceng.com wrote:
I just tried to run SatStat for the HP Z3801A on my new Windows 7 64-bit
computer and it reported it would not run under that OS.
What are folks using?
I mentioned to Tom that I had seen the xgps program duplicate a lot of its
satellites when I missed a PPS. I noticed my GPSDO go into holdover so I
quickly brought up xgsp and noticed it happening again. This screen showed a
few times intermixed with a normal screen. I have no idea whether
On Sat, 26 Apr 2014 13:52:47 -0400
Bob Camp li...@rtty.us wrote:
Hi
Upgrade to a Win 7 version that has XP support in it.
Bob
There is some confusion about XP support in win7. One way is to set the
property of the file to be more XP compatible. The other means is to
download a virtual
WinXP.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Larry McDavid
Sent: Saturday, April 26, 2014 12:29 PM
To: Time-Nuts Mail List
Subject: [time-nuts] SatStat on Windows 7
I just tried to run SatStat for the HP Z3801A on my new
Hi time-nuts,
I've been reading the list for a while and I realize most of the discussion is
a lot lower level than this, but I'm not sure where else to ask. I probably
don't have a complete understanding of the problem, and maybe I just need a
nudge in the right direction. My goal is
Take a look at Ulrich's Z38xx application, run it in Windows XP compatibility
mode..
Sent From iPhone
On Apr 26, 2014, at 10:35, Tommy phone thol...@woh.rr.com wrote:
Old W98 or W2k machines work for me.
From Tom Holmes
On Apr 26, 2014, at 1:29 PM, Larry McDavid lmcda...@lmceng.com
I have noticed skipped 1PPS on the Adafruit GPS also.
I've always assumed this could happen but as a result of RF signal loss not
a glitch in the gps. So I've started recording event timestamp deltas
To be clear, we are not talking about a system-wide GPS problem here; the
satellites are
On 04/26/2014 02:27 PM, Laszlo Hanyecz wrote:
It's fine to disable the additional cores/cpus on a dedicated NTP machine, but
I wonder if there is a solution that allows both the TSC and all the cores to
be used at the same time. Is it even possible to completely sync the counters
across CPUs
An interesting piece of hardware. Reasonable for its capabilities/
Don
Begin forwarded message:
From: The Red Pitaya Team sa...@redpitaya.com
Subject: Red Pitaya pre order notification
Date: April 24, 2014 9:10:14 AM MDT
To: d...@montana.com d...@montana.com
Reply-To: The Red Pitaya Team
I'm reading though the manual for my recently acquired M12+T which I'm
looking forward to using.
I notice that the manual is dated 09FEB05.
So the M12+T has been around for about a decade.
Are there more recent timing receivers available now or has the ubiquity of
the consumer GPS market
Hi
There are a number of timing receivers on the market. They still are a very
small percentage of the total units sold. A lot of people play with the uBlox
parts.
Bob
On Apr 26, 2014, at 7:59 PM, Jim Miller j...@jtmiller.com wrote:
I'm reading though the manual for my recently acquired
Have a look for Navsync CW12-TIM. We'll be using these for various timing
applications including a simulcast radio repeater system over IP. They're
about US$89 from SemiconductorStore.com.
Many thanks!
On Sun, Apr 27, 2014 at 9:59 AM, Jim Miller j...@jtmiller.com wrote:
I'm reading though the
Given the state of the GPS chip, would it really take that big an investment to
just add in the firmware to do timing? Or have the manufacturers just made a
marketing decision to keep that a high end market as long as they can?
Bob
From: Bob Camp
Hi
The ratios are pretty staggering. The timing market is 1% of the total chip
market. Any mass market is *always* about price. If timing adds a few percent
to the mass market parts, there’s no way anybody will do it.
Bob
On Apr 26, 2014, at 8:37 PM, Bob Stewart b...@evoria.net wrote:
The thunderbolt is one of the best timing devices but not for frequency, if
you want high resolution. Over time it is ok but high resolution short
gate times and you see the frequency changes. They use the OCXO to correct for
timing error and if you have a Tracor 527E you can see it. Also
And quite a few companies use them.
In a message dated 4/26/2014 8:27:57 P.M. Eastern Daylight Time,
li...@rtty.us writes:
Hi
There are a number of timing receivers on the market. They still are a
very small percentage of the total units sold. A lot of people play with the
uBlox parts.
The thunderbolt is one of the best timing devices but not for frequency, if
you want high resolution. Over time it is ok but high resolution short
gate times and you see the frequency changes. They use the OCXO to correct
for
timing error and if you have a Tracor 527E you can see it.
On Sat, Apr 26, 2014 at 7:59 PM, Jim Miller j...@jtmiller.com wrote:
Are there more recent timing receivers available now
Yes. Google gps timing receiver for a start. Sawtooth (quantization)
correction is probably the defining characteristic. So even though u-Blox
makes 'T' versions (e.g.
How does the u-bloc's performance compare to the M12+T?One of these is
on my list of things to buy someday. I thought the M12+T had a 1-sigma
error in the single digit nanoseconds.The u-bloc is newer it is even
better?
On Sat, Apr 26, 2014 at 6:02 PM, Paul tic-...@bodosom.net wrote:
35 matches
Mail list logo
