David Lesher writes:
But there has been an easy defense against such for decades.
You run ordinary phone wire from the transmitter + antenna X meters back to the bunker or whatever. Then you talk from there.
Another division of a company I did some consulting work for makes a box that goes between the transmitter and control head of a current generation tactical UHF satellite terminal (LST-5 TACSAT) of the type used by US military commanders in the field. It connects the control and talking part of the radio with the transmitter and antenna via up to a mile of optical fiber cable with no metal conductors. As you can imagine, it is hard to use RF sniffing techniques to find the command post at the other end of the fiber. Dave Emery die@die.com