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a Garmin GPS is a tool, right ?

C

couv

Member
How would I practice with my Garmin hand-held GPS, to set up 20 feet-wide passes in a field, spraying with a spray boom?

I have 2 fields to spray. One runs north-south. The other runs East-West.

Would want about 20 foot-wide passes
 
I very much doubt that it's possible to obtain that kind of accuracy with a handheld GPS. I'd think that the tolerance of the GPS would be close to 20'. A farm GPS is expensive for a reason. Mostly because they (Trimble, Deere etc.) can get away with charging what they do, but also because they are more accurate machines with much better receivers.
 
I have a couple of Garmins and even the newest one would not be accurate enough for what you want. I think the real accurate ones use a ground based tower also.
 
Tried using a GPS to lay out a fence rows for a pastuer field. Accuracy very poor. Ended up using a compass, 100 foot tape and a carpenter square.
Talked to a road surveyor recently. He claimed "accuracy to a dime spinning on edge." He was, however using a transmitter in a tripod exactly over a permanent survey marker.
 
a raven cruiser is the cheapest unit that I know of that will do the job. I actually used on while no tilling into a covercrop field and was shocked how accurate it was! I also had my markers working and was able to see the mark at times. if anyone knows of a cheaper model, I'm all ears! I borrowed mine from a friend!
 
Well I taped the GPS to the tractor dash anyway. The field I had to spray has a direct North-South fence line. I started on that side, and kept the North-South, South-North bearings as best as possible.

Guess I'll see if it helped in a few days.
 
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