It could be done. Not that we should ever consider doing it. But the technology exists. See the below link. But if you actually did this I would think it would have the opposite and maybe a worse effect on those cagers around you as they tried to now with "heads down" diagnose the reception problems.
:bigsmiley30:
Cell Phone Jammers : Mobile Jammer : Cell Phone Blocker Sale : GSM Jammers : Buy GPS Blockers