Hello, so I read the Comparing a uBlox Zed-F9P GPS with a M8P without external corrections and became interested in buying the holybro f9p with helical antena, but I also saw good reviews about the simplertk2b and the price is better.
I am looking to having rtk precision as long as possible while using a drone for crop spraying puporses, so which one of the two would be best?