Fact Nine. Jamiing can be rendred impossible by continuous frequency hopping.
EEErr.... Sorry (as far as I'm aware and correct me if I'm wrong) that only works if you have some little devise with limited range.
Even in the 60s The RAE / RAF had developed Long range energy burst mercury coil jamming devises which just completely disrupts all electromagnetic signals within a given area. I mean micro to mega wave. All!