I rather doubt this is the case. Simple issue of government agencies
wanting communications themselves around a protected individual. So those
chunks of spectrum would need to be clear. And those clear chunks could
then be use.

Alternately, if a jammer was used that was ONLY in the immediate area of the
protected target, say plus or minus 100 feet, and covering all of the
spectrum except a few very specific frequencies, then that could be used as
a detonation initiator itself. Just build a device that looks for a "safe"
signal, and when the safe signal goes away, do your thing.

This all points to a real problem with jamming for the purpose of not
allowing explosive devices to detonate. It just makes no real since.

C!

"Wiz" wrote in message
...
They jam around the President to eliminate the threat of RF detonated
explosive devices not to impair communication.