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WAAS vs SF1 are they the same accuracy?
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mx270a
Posted 11/16/2025 19:27 (#11437024 - in reply to #11436522)
Subject: RE: WAAS vs SF1 are they the same accuracy?



Cedar Rapids, Iowa
WAAS will sometimes hold within 12 inches for a few hours, and at times it will move 2-3 feet in less than a minute. There is no way to know when it will do the big jumps.

SF1 was (I'm pretty sure) just SF2 with some artificial noise added in to make it move around more. It behaved in a much more stable way than WAAS.

The ITC receivers can no longer get SF1, so it is running on WAAS, and the bridge module just changes the data messages coming from the receiver to say that the signal is SF1 instead of WAAS. It will perform like a receiver on WAAS because that's what it's using.

RTKx and SF3 will have a little more drift than a RTK base. Does this matter? Depends what you're doing. If you're just running a chisel plow, it doesn't matter. If you're doing strip till, it might be an issue.
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