On Sat, 08 Sep 2001 12:50:43 -0230 Ron Thompsonwrites: > My twist on this is to have the radiating plates on the > outside, the two plates 180 degrees out of phase with > each other, and have the receiving antenna on the arm > in the null field position so that at rest no signal is received. The problem with that approach is the wavelength of the RF signal you are nulling is probably thousands (or millions) of times the excursion of your detector, so you would have to get well up into the SHF range to have short enough wavelengths to permit some kind of rational experimentation with tuned elements and phase detection. The other detectors to which you refer take advantage of the inverse square law and are largely frequency independent. You could do it with light just the same, except the RF doesn't need to be kept in the dark. But hey, keep twisting away at it...you'll get it broke yet :-) Tom __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>