How could I detect the presence of a nearby cell phone? I'm assuming most are sending out a query pulse every millisecond in search of a matching signal that would make them ring. So they are transmitting a signal continuously in human terms. What kind of circuit do I need to develop to detect nearby cell phones? And in so doing come up with a device to detonate the detonators plugged into IEDs and other terrorist bombs?
- posted
17 years ago