Comment by elpepo
Does anyone know, assuming this was a radio-triggered signal to detonate the booby trap, what range the originating signal or radio station could have?
I'm curious if this type of remote activation could be achieved with just a single radio tower, or if it would require a network of geographically distributed radio towers to transmit the signal to the affected area. How would isolation conditions, like being inside a building or in a garage, affect it? Also, what kind of radio towers would be needed? Could it be disguised as a regular HAM radio antenna on a building?
I would love to know that too. I don't know the frequency the walkie-talkie used: it could anywhere between 136 MHz to 900 MHz. To give you an idea, 135 MHz isn't too far from the FM spectrum. The antenna of your local radio can blast at several miles. If several cities were targeted, then multiple emitting stations were involved.