Re: [time-nuts] : L1 GPS timing signal(s) into local time on computer(s)

2012-10-20 Thread Jim Lux
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)

Re: [time-nuts] : L1 GPS timing signal(s) into local time on computer(s)

2012-08-21 Thread Chris Albertson
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

Re: [time-nuts] : L1 GPS timing signal(s) into local time on computer(s)

2012-08-21 Thread Sarah White
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

Re: [time-nuts] : L1 GPS timing signal(s) into local time on computer(s)

2012-08-21 Thread Michael Tharp
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.

Re: [time-nuts] : L1 GPS timing signal(s) into local time on computer(s)

2012-08-21 Thread Chris Albertson
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

Re: [time-nuts] : L1 GPS timing signal(s) into local time on computer(s)

2012-08-21 Thread Sarah White
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.

Re: [time-nuts] : L1 GPS timing signal(s) into local time on computer(s)

2012-08-21 Thread Hal Murray
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

Re: [time-nuts] : L1 GPS timing signal(s) into local time on computer(s)

2012-08-20 Thread cfo
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

Re: [time-nuts] : L1 GPS timing signal(s) into local time on computer(s)

2012-08-20 Thread Sarah White
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

Re: [time-nuts] : L1 GPS timing signal(s) into local time on computer(s)

2012-08-20 Thread Hal Murray
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

Re: [time-nuts] : L1 GPS timing signal(s) into local time on computer(s)

2012-08-20 Thread Michael Blazer
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

Re: [time-nuts] L1 GPS timing signal(s) into local time on computer(s)

2012-08-19 Thread Hal Murray
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

Re: [time-nuts] L1 GPS timing signal(s) into local time on computer(s)

2012-08-19 Thread Bill Dailey
. 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 -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow

Re: [time-nuts] L1 GPS timing signal(s) into local time on computer(s)

2012-08-19 Thread Ken Duffill
://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 -- time-nuts@febo.com

Re: [time-nuts] L1 GPS timing signal(s) into local time on computer(s)

2012-08-19 Thread Bill Dailey
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

Re: [time-nuts] L1 GPS timing signal(s) into local time on computer(s)

2012-08-19 Thread Sarah White
/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

Re: [time-nuts] L1 GPS timing signal(s) into local time on computer(s)

2012-08-19 Thread KD0GLS
/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

Re: [time-nuts] L1 GPS timing signal(s) into local time on computer(s)

2012-08-19 Thread Chris Albertson
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

Re: [time-nuts] : L1 GPS timing signal(s) into local time on computer(s)

2012-08-19 Thread Willy Willemse
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

Re: [time-nuts] : L1 GPS timing signal(s) into local time on computer(s)

2012-08-19 Thread Sarah White
) -- 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

Re: [time-nuts] L1 GPS timing signal(s) into local time on computer(s)

2012-08-19 Thread Didier Juges
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.

[time-nuts] L1 GPS timing signal(s) into local time on computer(s)

2012-08-18 Thread Sarah White
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 -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow

Re: [time-nuts] L1 GPS timing signal(s) into local time on computer(s)

2012-08-18 Thread lists
@febo.com 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