Hey, I’m only the messenger here. Am not doing an endorsement!
The only thing I’ll endorse is the current RDF and GPS stuff that is already available to us rocket folks.
900Mhz, 70cm, 2m bands doesn’t matter. Practice with it and one will get back their out ‘a sight project just about every time as long as it doesn’t land on high tension wires, a body of water, tall tree or private property with a shotgun toting hillbilly enforcing the “No Trespassing” signs!
The longer wavelength trackers (70cm/2m Ham band) might have a little edge on propagation, especially ground footprint, but sport fliers using the 900Mhz stuff won’t notice the difference. I’ve used Ham licensed and non-licensed systems and never lost a rocket with either of them.
Although, I was doing live mapping too. Nothing like using a live photomap to see if one’s rocket landed in the middle of a cornfield, next to a barn, maybe in a farm pond or close to a “testy neighbors” yard!
Kurt