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Satellitte #31


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Whilst using my GPSmap 76CSx yesterday I received satellite #31. It was at full strength but was always flashing and never a solid bar. Reception ceased at 17:54 BST. At the same time I was also receiving EGNOS #37 for much of the time. I understand that the 76 CSx will only receive 1 WAAS/EGNOS at a time. I have never seen a GPS satellite with number > 30 before so my question is, what is satellite #31?

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Whilst using my GPSmap 76CSx yesterday I received satellite #31. It was at full strength but was always flashing and never a solid bar. Reception ceased at 17:54 BST. At the same time I was also receiving EGNOS #37 for much of the time. I understand that the 76 CSx will only receive 1 WAAS/EGNOS at a time. I have never seen a GPS satellite with number > 30 before so my question is, what is satellite #31?

 

 

:D Big Brother is Watching! :D

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31 Launched 25 SEP 2006

 

The newest of the GPS (not WAAS) sats. It is second of the new generation gps sats with a stronger signal and civilian duel band signal. Probably flashing because it may still be in test phase.

 

Yes, as I have always understood, you will see sats in test mode (They were just launched or relocated to another orbit) but not get a lock. I have heard this is because they are sending a signal but there is no GPS useful data in it.

 

I have to say it is pretty neat to see a sat in test mode for some time and then watch it come online and be useful.

Edited by MrMullen
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31 Launched 25 SEP 2006

 

The newest of the GPS (not WAAS) sats. It is second of the new generation gps sats with a stronger signal and civilian duel band signal. Probably flashing because it may still be in test phase.

 

EraSeek, I'm just curious how did you find out that GPS 2R-15 Launched 25 SEP 2006 has been given SVN 31 ?

Edited by Jim W
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Yes I got #31 today too.

 

Maybe someone smater than me can interpret this on #31:

B. ADVISORIES:

NANU MSG DATE/TIME PRN TYPE SUMMARY (JDAY/ZULU TIME START - STOP)

 

2006079 211403Z AUG 2006 15 UNUSUFN 233/1358-/

2006095 222023Z SEP 2006 24 UNUSUFN 265/2015-/

2006096 240059Z SEP 2006 24 UNUSABLE 265/2015-267/0056

2006112 122301Z OCT 2006 31 USABINIT 285/2253-/

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Wow, Sat 31 went operational really fast (only a couple weeks after launch). The new WAAS birds have been in testing for months, although they do need to be highly accurate for aviation. I guess we don't need such accurate sats to drop bombs or anything, so it would be silly to waste our time fine tuning the system :(

 

I started picking up 31 last night, and for my area it's overhead about 6am-noon, then it disappears. I live in the Upper Peninsula of Michigan.

 

Robert (Team CypherX)

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I understood that satellite numbers above 30 were for WAAS / EGNOS and since this bird has been available (first spotted it on 12th -flashing, and fully locked since) I have never once got a WAAS lock here in the south west of the UK. My old Etrex seemed to work great getting the Ds, but my new 60csx has always been a bit more reluctant. Now even though I have WAAS enabled, Sat 31 invariably takes up the last slot on the screen - although I have sometimes seen 37 in that position.

 

Just curious really, even without the Ds I still get an average epe of about 12ft.

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