One of my 200's is sitting on the bar, probably 15' from the anemometer, it drops out after a day or two, the #2 sensor is on the same mast, it never drops out, but the #1 sensor about 40' with direct line of sight through a window comes and goes like the tide, no reason. The newer 200 seems considerably better, so there is no pattern to the 200's, some work - sometimes - and other almost never work. Personally if I had a product with it's reputation I'd either re-engineer it or dump it. My old 100 console is rock solid, of course it doesn't have the touch screen, also junk, or data logger. A 100 with a data logger dongle would be perfect and take the noise level down a bunch.