I've made this OT although in another context EE may have been better. Their assessment re the potentially short range of GPS jamming seems naive to me. given the power levels of the signals concerned. http://www.spaceequity.com/tools/showarticle.php?serial=40§ion=features RM -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu