Frequency hopping spread-spectrum is almost impossible to compromise.
I see you were a ditty bopper in the real war. The USAF Security Service ditty boppers trained on the floor below us at Keesler.
I haven't had any experience with frequency hopping spread-spectrum but it seems like it would be a little messy to manage in a real world situation. I guess now-a-days moving up in the GHz bands, transmissions might be cleaner.
Unless FBI has the templates and now has full access to unguarded communications with these “dissidents.”