Long range ntenna

The hound recovery system antenna with the long vertical and 4 short horizontal antennas at the base seems to be the best long range one. On the 300I handheld I use the buzzard roost 16 inch antenna but hunting with other people I don't see much difference in any of the flexible antennas. I did learn just today I needed to enable the GNSS satellite systems in conjunction with the normal GPS satellite system. It has had that capability all along it just wasn't activated. Curious to see if that increases the range, but doubt it will because while hunting I never get a lost satellite reception notice, just the question on the dog due to the lost telemetry signal on the dog.
What I had noticed was that when I have the handheld in the house charging it says "lost satellite reception, do you want to enable the GNSS" I had noticed it before in the house but was hesitant to enable it because I didn't know what if any problem it would cause, "tech dinosaur" so I inquired about it with Garmin. All it does is enable many more satellites in case of failure to connect with the normal GPS satellites.
I don't understand why they need the old radio telemetry signal along with the satellite signals. It looks to me like if the satellite is what locates the dog on the map we'd no longer need the radio telemetry signal. And that in itself would greatly extend the range. All I know is that's an fcc deal.