Yo Werner! On Thu, 7 Aug 2025 18:24:51 -1000 Werner Thie <[email protected]> wrote:
> cold booting the F9P and doing a one hour raw ubx snapshot with
> gpspipe/gpsdecode/gpsrinex went through CSRS-PPP with no problem
> with encouraging Sigmas for the estimated position
Sire sounds like something is flakey.
> Latitude (+n) Longitude (+e) Ell. Height
> Sigmas(95%) 0.014 m 0.030 m
> 0.139 m
Not bad for one hour.
> It seems to boil down to stability problems. I wanted to avoid a
> separate controller board in the reference location due to power
> constraints
Lost me. Controller board? If you said before, I forgot, what is
your system configuration? Is it indoors? Outdoors?
> but it looks more and more like I need it to reign in
> that F9P. Is the F9T any better?
How did you jump from some "controller board" to the receiver?
AFAIK, the only difference between the F9P and F9T is the firmware
adjusted for the positioning or timing. And the F9T has a nicer
on-board oscillator. I doubt you woould see any difference.
> The current hardware is only the solar charger, the F9P and a SIK
> based 915MHz telemetry radio on UART1.
Outdoors? In Hawaii? Sounds like things could get real hot. That would
be bad for any bare receiver. Are you tracking temperature?
I do not see how adding a RasPi, or similar, helps anything.
> Again, sorry for the noise, mahalo, Werner
A little noise is unavoidable. Seems like you have a real problem we
need to figure out.
RGDS
GARY
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Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
[email protected] Tel:+1 541 382 8588
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