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Old 09-08-2005   #811 (permalink)
Mark57
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Dutch, I dumped my settings with Sirfmon before I touched them. Most, except for the DR timeout match yours. Am I missing something here?

Alt Hold mode: 0
Alt Hold source: 0
Alt. Source input: 0m
Degraded mode: 1
Degraded timeout: 30sec
DR timeout: 15sec
Track Smooth mode: 1
Static Navigation: N
3SV Least Squares: 0x1
DOP Mask Mode: 0x4
Nav. Elev. mask: 0x4b
Nav. Power Mask: 0xe
DGPS Source: 0x1
DGPS Mode: 0x0
DGPS TImeout: 18sec
LP Push to Fix: N
LP on TIme: 1000ms
LP Interval: 1000
U. Tasks Enabled.: Y
U. Task Inter.: 100
LP Pwr Cyc En: N
LP Max Acq Srch: 300000
LP Max Off Time: 300000
APM enabled: N
# of Fixes: 0
Time btw Fixes: 0
H/V Error Max: 0
Rsp Time Max: 0
Time/Accu: 0
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Old 09-08-2005   #812 (permalink)
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Quote:
Originally Posted by Mark57
That's possible. Some days are worse than others. Many days don't have as many satellites directly overhead as others.
Want to know what's going to be in view?

http://www.trimble.com/planningsoftware.html

(I haven't tried it, just thought you'd be interested..)
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Old 09-08-2005   #813 (permalink)
Dutch
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Quote:
Originally Posted by Mark57

Nav. Elev. mask: 0x4b
Nav. Power Mask: 0xe
These two should be changed, the other params look fine.
Your current Nav Elev. mask states that you won't use any satelittes lower than 7.5 degrees over the horizon. Use 's 8b 00 32 00 32 <enter>' to change it to 5 degrees over the horizion, which often can mean the difference between getting a 3D solution vs a 2D or nofix.

There's something wrong with your Nav Power mask data though, if it's 0xE. The lowest value a SirfStarII chipset can have there, is 20 db hz. Default values is normally 28 db hz ( 0x1C for tracking) and 30 db hz (0x1E for navigation). Set both of them to 20 db hz with 's 8c 14 14<enter>'

Dutch
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Old 09-08-2005   #814 (permalink)
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Quote:
Originally Posted by Dutch
These two should be changed, the other params look fine.
Your current Nav Elev. mask states that you won't use any satelittes lower than 7.5 degrees over the horizon. Use 's 8b 00 32 00 32 <enter>' to change it to 5 degrees over the horizion, which often can mean the difference between getting a 3D solution vs a 2D or nofix.

There's something wrong with your Nav Power mask data though, if it's 0xE. The lowest value a SirfStarII chipset can have there, is 20 db hz. Default values is normally 28 db hz ( 0x1C for tracking) and 30 db hz (0x1E for navigation). Set both of them to 20 db hz with 's 8c 14 14<enter>'

Dutch
Thanks! I'm still going to use your settings but I thought you'd be interested in these first. So you have to set these for each session? I'm assuming they're not stored in the GPS.

Also, I had to start GPSDrive and its GPSD to see any data coming through sirfmon.

Thanks for the link to Trimble. I'm downloading it now.
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Old 09-08-2005   #815 (permalink)
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Mark57, Kudos with the monthly dump stats! breaking 5k in 8 days is pretty nice. With your amping I may have to pull double duty soon!

Israel
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Old 09-08-2005   #816 (permalink)
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Quote:
Originally Posted by Mark57
Thanks! I'm still going to use your settings but I thought you'd be interested in these first. So you have to set these for each session? I'm assuming they're not stored in the GPS.

Also, I had to start GPSDrive and its GPSD to see any data coming through sirfmon.

Thanks for the link to Trimble. I'm downloading it now.
Huh ?
The params are stored in the gps untill it hardresets.. There should be a batterybacked SRAM in the unit. But a hardreset can sometimes happen if you pull the USB cable from the PC without having the system down. I just fire up sirfmon after connecting the GPS, and check if the params are correct.

As for having to fire up gpsdrive and gpsd first, that shouldn't be necessary. gpsd shouldn't be running when using sirfmon (unless you are using the gpsd from ESR with a version higher than 2.27)
Also be sure you are running the forked gpsd from gpsdrive (in the /usr/src/gpsdrive-2.0.9/src directory), and not the standard gpsd. I have copied the gpsdrive gpsd to /usr/sbin and renamed it gpsd_old, so I'm certain which one I have running.

Dutch
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Old 09-08-2005   #817 (permalink)
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Quote:
Originally Posted by Airstreamer
Want to know what's going to be in view?

http://www.trimble.com/planningsoftware.html

(I haven't tried it, just thought you'd be interested..)
Sure, now someone decides it's a good idea...

FAQ: Wardriving Tips ‘n’ Tricks
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Old 09-08-2005   #818 (permalink)
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Originally Posted by Israel Torres
Mark57, Kudos with the monthly dump stats! breaking 5k in 8 days is pretty nice. With your amping I may have to pull double duty soon!

Israel
Thanks. It's been a big help. I was hoping to clear 1,000 a day for September, but I don't think that's going to happen.
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Old 09-08-2005   #819 (permalink)
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Originally Posted by Dutch
Huh ?
The params are stored in the gps untill it hardresets.. There should be a batterybacked SRAM in the unit. But a hardreset can sometimes happen if you pull the USB cable from the PC without having the system down. I just fire up sirfmon after connecting the GPS, and check if the params are correct.

As for having to fire up gpsdrive and gpsd first, that shouldn't be necessary. gpsd shouldn't be running when using sirfmon (unless you are using the gpsd from ESR with a version higher than 2.27)
Also be sure you are running the forked gpsd from gpsdrive (in the /usr/src/gpsdrive-2.0.9/src directory), and not the standard gpsd. I have copied the gpsdrive gpsd to /usr/sbin and renamed it gpsd_old, so I'm certain which one I have running.

Dutch
This GPS seems to reset pretty easily. I always do a shutdown before removing it.

Hmm, it would seem I don't have the 2.09 version of GPSD. I searched. Things are becoming much more clear now. I do have the 2.28-2 ESR version which explains sirfmon wierdness.

Now I know what needs to be done. Thank you!

Quote:
Originally Posted by wrzwaldo
Sure, now someone decides it's a good idea...

FAQ: Wardriving Tips ‘n’ Tricks
And we appreciate it.
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Old 09-08-2005   #820 (permalink)
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We're smack dab at the bottom of the 11-year sunspot cycle so flares and sunspots are definitely a rarity thesedays.
http://science.msfc.nasa.gov/ssl/pad...ges/zurich.gif
Speaking of flares.

http://www.thewgalchannel.com/irresi...24/detail.html
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Old 09-08-2005   #821 (permalink)
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Quote:
Originally Posted by streaker69
Look up ;-)
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:00475178 45 78 74 72 61 6F 72 64 Extraord
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Old 09-08-2005   #822 (permalink)
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Look up ;-)
I missed that cause I was skimming through this thread, and never saw that post.
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Old 09-08-2005   #823 (permalink)
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Originally Posted by streaker69
I missed that cause I was skimming through this thread, and never saw that post.
I probably could have labeled it better. Either way, I think the effects from that flare are just now beginning to take place and probably did not affect the GPS constellation as far as the issues I was having.
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:00475170 6E 66 65 65 64 65 72 2E nfeeder.
:00475178 45 78 74 72 61 6F 72 64 Extraord
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Old 09-08-2005   #824 (permalink)
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I probably could have labeled it better. Either way, I think the effects from that flare are just now beginning to take place and probably did not affect the GPS constellation as far as the issues I was having.
I was out for several hours today and never lost lock.
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Old 09-08-2005   #825 (permalink)
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I was out for several hours today and never lost lock.
Based on my discussions with Dutch, I *think* my issues were with gpsd and not the gps receiver itself. I can count on one hand the number of times I've lost lock in the several years I've had it. I went through the double tunnel on the PA turnpike and actually had a few gps hits in the hundred or so meters between the two tunnels.
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:00475178 45 78 74 72 61 6F 72 64 Extraord
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