RE: Futaba High Band / Low Band
Ron,
How did you check the range when you switched crystals? Do you mean that you did a range check and it was still ok? Or you checked the max range before the switch and the max range afterward and they were the same?
I would agree that a standard range check will probably show that the receiver works fine. But that doesn't mean you didn't loose any range. I've had a couple decades of RC experience myself and haven't seen a reduction of range either. But that's because I never check the maximum range; instead, just do the standard range check like everyone else. Unless you're flying 1/4 mile away from yourself, you will not likely see any difference. It's just not a chance I'm willing to take with $1000+ helicopter when it's not necessary.
Keith