you could certainly do that with vhf and uhf radio.

I built a repeater that takes a vhf radio signal and rebroadcast via a UHF signal using some cheap handheld ham radios..

It is mounted in one of my larger FPV RC planes.

In my testing, I went out about 3 miles, put it into loiter(circling) mode, and successfully rebroadcast my signal to my house on the new frequency and sent back to myself.

You could easily rig a larger drone that does similar, and even multiple drones that are tied together repeating the signal, however there would be a few delays.