The jammer derives pleasure from messing up your communications and your on air response to it. The jammer craves this response. The jammer is elated at the power and control he is able to wield. First, your chances of ever finding the jammer are next to nil. You need a coordinated team available on a moments notice when the jammer appears to get the triangulation process accomplished. Guess what? You won't have the posse always standing by and ready to jump into action. The best thing to dissuade the jammer is unfortunately to shut down the repeater. No repeater, no inteference. The repreater can be activated in an emergency of course but thats often the only way to eliminate the jammer. The phychology of jamming is perhaps of interest. The jammer is usually a dissatisfied, angry person who is a loser. They are academically challenged (but not stupid), non athletic, not attractive, relationshipless, introverted and sometimes bullied (if in school). Of course any unbalanced person at any age can be the jammer...they are almost always male. The jamming is an exercise of power over others and often this is only sense of power the jammer has. It's sad but our society is filled with such micreants. All it takes is a $30 Baofeng to mess up your repeater. You have to ask yourself just how important is your own chit chat activities once a jammer descends on you and your fellow hams, Perhaps it's time to go simplex.