A kid with pcb and sine knowledge could build a jammer that crossed enough band to kill the signal. It would be a power hungry system but it would work. Everything that transmits and receives uses RF. There are no alternative transmission methods that are practical. IR and laser transmission is too short range and requires line of sight.
What you're more likely referring to is known as ruggedized hardware. High durability, temp and ecm resistance. Unlikely because of the cost, but not impossible.