From: David VanHorn >I had a hell of a time with an alarm system that I was installing (buried >seismic) about 100' from one end of the antenna. I had to design custom >filters for the input lines. Oooh, a seismic alarm detector? Can you tell me: what the effective range is? what type of signal processing used? Time or frequency domain? can you discriminate 2 feet from four hoofs - a man at 50 feet vs a rat at 1 foot? any literature references? Every so often I see surplus seismic detectors and wonder if they are worth it. Would hate to harm any cute furry bunnies 8^) Thanks, Scott **************************************************************** Freedom is pursuing your carrot, not running from a stick. The mob only rules what its members are allowed to achieve. Physics - the manifold ways the odds always get even... **************************************************************** -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu