Originally Posted by CNY_Dave
50 bucks will get a cool little USB spectrum analyzer, well worth it if you are concerned, and also good for tracking down the interference (if you can cobble something to make it somewhat directional).
When I was in California we had a problem where all planes would lose link at the same time. A pilot brought his Spectrum analyser, and a directional antenna to the field. Tracked it to comunications between a top secret facilitiy locally called the Blue Cube, and a government contractor. We left a letter with the security guard, with suggestions on how they could reduce the problem. They actually responded, with sorry but they would not change what they do, and would do it at anytime.