Posted 1/19/2023 10:25 (#10047988 - in reply to #10047372) Subject: RE: Cheap RTK options
Middlesex County, Ontario
Dirtfarmer1000 - 1/19/2023 00:05
GPS degree heading should be the same in all GPS, regardless of the price or who makes it.
It is not possible to draw straight parallel lines on a spherical Earth. Different companies fudge it different ways.
You can make the same A+ line in a Trimble system and a Deere system. Both systems will leave the exact same A point at the exact same heading and first A+ line will match up perfectly between systems. Once you get 20+ passes away from the original line and a ways down the field from the A point the lines don't match up anymore between systems. They compensate for the curvature of the Earth differently. Its a small difference but its big enough that you can't use one system to plant and the other system to follow the rows consistently.