this way it will only respond to nearby radars—which, after all, should be friendly. One should also reduce the power output of the transponder in like manner. Jamming police radar Jamming radar for the purpose of defeating police radar guns is more simple than military-grade radar jamming. The laws about jamming police radars vary by jurisdiction. Jamming in nature The jamming of bat sonar by certain tiger moth species has recently been confirmed. This can be seen as nature's equivalent of radar jamming. See also References Electronic countermeasures Military decoys Penetration aids Radar