Re: [time-nuts] GPS 50 bps recording today

2019-04-06 Thread Mike Cook
Ok.
I have a bin file recording going via winoncore12 of the Raw data from an M12 .
I hope that it is OK. 
Mike


> Le 6 avr. 2019 à 21:14, Tom Van Baak  a écrit :
> 
> Would someone be a hero and record the raw subframe data from GPS today? It's 
> only 50 bits per second (that's about 8 bytes/second) per SV.
> 
> A select few GPS receivers have binary commands that return this low level of 
> detail: M12 (@@Tr), SiRF (8), uBlox (RXM-SFRB).
> 
> My attempts to pull this off today have failed. It's your once* in a lifetime 
> chance to record a GPS WNRO at the bit level. I'm looking for the raw serial 
> data stream binary dump; something re-playable in the future, not some ascii 
> output or screen shot.
> 
> /tvb
> 
> 
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Re: [time-nuts] GPS 50 bps recording today

2019-04-06 Thread Scott Newell

At 02:14 PM 4/6/2019, Tom Van Baak wrote:
Would someone be a hero and record the raw subframe data from GPS 
today? It's only 50 bits per second (that's about 8 bytes/second) per SV.


I've two uBlox LEA-6Ts recording RXM-SFRB (0x02 0x11) subframe data 
with crummy indoor antenna positions (rain prevents me from getting 
'em outside).


I also have a uBlox NEO-7N recording the undocumented TRK-SFRBX (0x03 
0x0f) subframe data, with a terrific outdoor antenna placement.


Too bad the tbolt doesn't seem to send the subframe data--lots of 
those on the list.


I'm sure the gfz-potsdam.de archive will have the data in a couple of 
weeks, but that's not quite the same as recording it yourself in 
realtime, is it? ;-)


--
newell N5TNL 



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[time-nuts] GPS 50 bps recording today

2019-04-06 Thread Tom Van Baak
Would someone be a hero and record the raw subframe data from GPS today? It's 
only 50 bits per second (that's about 8 bytes/second) per SV.

A select few GPS receivers have binary commands that return this low level of 
detail: M12 (@@Tr), SiRF (8), uBlox (RXM-SFRB).

My attempts to pull this off today have failed. It's your once* in a lifetime 
chance to record a GPS WNRO at the bit level. I'm looking for the raw serial 
data stream binary dump; something re-playable in the future, not some ascii 
output or screen shot.

/tvb


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