To put this in perspective, I have some familiarity with surveillance systems used by government agencies to search for sources of RF such as cell phones, listening devices, etc in secure locations. It has some analogies to the DQRM problem. Using relative amplitude doesn't work very well to do RF location. Using relative time of arrival works somewhat better, but is also far from infallible. Multipath is a serious problem.
I also have some familiarity with systems used by cell phones to determine their position for 911 when they lose GPS access. Another difficult problem. It just doesn't seem like hams are going to do what the professionals are still struggling with. I think the idea of the DQRM is that we get lucky and someone hears the interferer at 60 dB over S9 and can narrow down the offender to a few nearby stations. Rick N6RK _________________ Topband Reflector Archives - http://www.contesting.com/_topband
