On 8/21/12 9:53 AM, Sarah White wrote:
Wow. Okay. The user manual actual considers this cable delay to be worth
mention?
I can see why the trimble thunderbolt is a favorite among time nuts 3
I'm sold.
Cable time offset is in basically all GPSes. An awful lot of GPS
receivers (for timing)
On Mon, Aug 20, 2012 at 3:10 PM, Sarah White kuze...@gmail.com wrote:
I really like that the thunderbolt can (assuming the initial location
has been uploaded, or the default site survey has been completed)
still keep accurate time / discipline based on a single satellite lock
(before falling
Thanks Chris.
I always appreciate clear explanations. I'm assuming that the fixed
location requirement is important to note for purposes of compensating
for any dopler shift, as well as the distance the signal must first
travel before being decoded.
... I would presume that the fixed location
On 08/21/2012 12:35 PM, Sarah White wrote:
Thanks Chris.
I always appreciate clear explanations. I'm assuming that the fixed
location requirement is important to note for purposes of compensating
for any dopler shift, as well as the distance the signal must first
travel before being decoded.
On Tue, Aug 21, 2012 at 9:35 AM, Sarah White kuze...@gmail.com wrote:
Thanks Chris.
I always appreciate clear explanations. I'm assuming that the fixed
location requirement is important to note for purposes of compensating
for any dopler shift, as well as the distance the signal must first
Wow. Okay. The user manual actual considers this cable delay to be worth
mention?
I can see why the trimble thunderbolt is a favorite among time nuts 3
I'm sold.
On 8/21/2012 12:48 PM, Chris Albertson wrote:
On Tue, Aug 21, 2012 at 9:35 AM, Sarah White kuze...@gmail.com wrote:
Thanks Chris.
kuze...@gmail.com said:
... I would presume that the fixed location used for above calculations
would be relative to the position of the antenna?
A side effect of figuring out where you are is figuring out when you are
there.
There are 4 unknowns: X, Y, Z, T, so you need 4 equations. You
On Sun, 19 Aug 2012 15:29:22 -0400, Sarah White wrote:
oh wow, thanks. I'll try that.
Also, I figured out that typing in trimble thunderbolt instead of
thunderbolt gps gives me zero hits for phone... but fewer hits for the
GPSDO too :(
Try to search on : 10mhz gps
You should see most
CFO:
oooh, really.
So 10mhz reference is pretty standard for a GPS disciplined frequency
standard. Thanks.
I really like that the thunderbolt can (assuming the initial location
has been uploaded, or the default site survey has been completed)
still keep accurate time / discipline based on a
kuze...@gmail.com said:
... Is that a common feature? Know of any good ones other than the trible
thunderbolt?
It's standard in GPSDOs. It requires special firmware in the GPS unit.
--
These are my opinions. I hate spam.
___
time-nuts
Just order one from RJB1998
(http://www.ebay.com/itm/120969870669?ssPageName=STRK:MEWNX:IT_trksid=p3984.m1497.l2649)
Friday and it's here today. $169 with free shipping. He included a power
cable (6 pin to leads) and a TNC-F cable.
Mike Blazer
On 8/20/2012 4:07 PM, cfo wrote:
On Sun, 19 Aug
kuze...@gmail.com said:
this is a no-name cheapo SIRF module
1) I need a computer with a serial port. The curent GPS module I'm using is
INTERNALLY RS232 -- USB converter, and recognized by my windows 7 computer
as: Prolific USB-to-Serial Comm Port (COM3) ... the latency and jitter is
. As the subject line suggests:
HELP!!! I'd like to convert L1 GPS timing signal(s) into local time on
computer(s)
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and follow
://linuxpps.org/wiki/index.php/LinuxPPS_NTPD_support
And here is where I give up. As the subject line suggests:
HELP!!! I'd like to convert L1 GPS timing signal(s) into local time on
computer(s)
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to wrap my head around these:
http://linuxpps.org/wiki/index.php/LinuxPPS_installation
http://linuxpps.org/wiki/index.php/LinuxPPS_NTPD_support
And here is where I give up. As the subject line suggests:
HELP!!! I'd like to convert L1 GPS timing signal(s) into local time on
computer(s
/LinuxPPS_installation
http://linuxpps.org/wiki/index.php/LinuxPPS_NTPD_support
And here is where I give up. As the subject line suggests:
HELP!!! I'd like to convert L1 GPS timing signal(s) into local time on
computer(s)
___
time-nuts mailing list
/LinuxPPS_installation
http://linuxpps.org/wiki/index.php/LinuxPPS_NTPD_support
And here is where I give up. As the subject line suggests:
HELP!!! I'd like to convert L1 GPS timing signal(s) into local time on
computer(s)
___
time-nuts mailing
On Sat, Aug 18, 2012 at 10:23 PM, li...@lazygranch.com wrote:
If you are using a desktop, I'd suggest putting in a serial card. The
Netmos chip based cards work on windows and linux, though your should do an
internet search on the particular card before you buy.
I have the prolific based
measurement
time-nuts@febo.com
Subject: Re: [time-nuts] L1 GPS timing signal(s) into local time on
computer(s)
Message-ID: ae1d2790-af2b-40fc-88d8-f13a61d77...@mninter.net
Content-Type: text/plain; charset=us-ascii
In my experience (which is admittedly less than that of many
)
--
Message: 1
Date: Sun, 19 Aug 2012 10:41:39 -0400
From: Sarah White kuze...@gmail.com
To: time-nuts@febo.com
Subject: Re: [time-nuts] L1 GPS timing signal(s) into local time on
computer(s)
Message-ID
Another option is a low end laptop.
I use a Dell D400 laptop, with a 1.8GHz Pentium M and it draws about 20W from
A/C with the display blanked, which is the way an NTP server will be most of
the time.
The power brick rating assumes running the laptop AND charging the battery at
the same time.
up. As the subject line suggests:
HELP!!! I'd like to convert L1 GPS timing signal(s) into local time on
computer(s)
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Reply-To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Subject: [time-nuts] L1 GPS timing signal(s) into local time on computer(s)
Hi, this is my first post.
First off. Windows 7 USB connection to the GPS (no serial ports / modern
computer) and I'm pretty sure
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