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uBlox F9T testing - best settings?

AW
Anders Wallin
Mon, Sep 23, 2019 11:11 AM

Anders,
Thanks for sharing your results! I am a but surprised that you have so
large
variations, I wonder how much the antenna placement affects the results.
Just for fun - can you tell us more about how your antenna is place now?

Current antenna placement was restricted by the 5m cable of the
puck-antenna. The antenna is at the corner of our building.
The corner of our building extends about 2-3m up from this location - so it
blocks about 1/4th of the sky.
Maybe it also creates some multi-path?
I didn't collect anything over the UART for now - the blocking of SVs
should be clearly visible in a alt/az plot of each satellite.

When we build more of the boxes containing an RCB-board we can try the
24h-survey, fixing the coordinates, and a better antenna placement.

Anders

> Anders, > Thanks for sharing your results! I am a but surprised that you have so > large > variations, I wonder how much the antenna placement affects the results. > Just for fun - can you tell us more about how your antenna is place now? > Current antenna placement was restricted by the 5m cable of the puck-antenna. The antenna is at the corner of our building. The corner of our building extends about 2-3m up from this location - so it blocks about 1/4th of the sky. Maybe it also creates some multi-path? I didn't collect anything over the UART for now - the blocking of SVs should be clearly visible in a alt/az plot of each satellite. When we build more of the boxes containing an RCB-board we can try the 24h-survey, fixing the coordinates, and a better antenna placement. Anders