I mean...there's not much more to the story than that. 2011 was a bit crazy for the Sun [1]. There were two or three x-class flares that jammed transmission for

I mean...there's not much more to the story than that. 2011 was a bit crazy for the Sun [1]. There were two or three x-class flares that jammed transmission for a short period. Multiple customer reports coincided with the February and August events that year. The February flare was caused by sunspot 1158 [2] and the August flare was caused by sunspot 1263 [3]. Deploying those locks across hundreds of locations we saw quite a bit of unusual stuff. Locks would work fine on one side of a building but not the other - the bad side faced the San Francisco bay - deduced it was from all the SF/Oakland Radio traffic. Another location would experience problems during baseball games. (Stadium was next door). Cell tower guys have even crazier stories. One involves my colleague who had a bitcoin mine in his garage. Few dozen graphics cards humming along at ~900MHz knocked out the whole voice uplink for 4 square miles. (He happened to be pretty close to the cell tower and raised the noise floor just enough to make cell phones all but useless.) Working in ISM bands can be brutal, but it will teach you a lot and quickly. [1] http://www.space.com/14060-2011-restless-sun-solar-activity-review.html http://www.space.com/14060-2011-restless-sun-solar-activity-... [2] http://www.space.com/10862-sun-erupts-powerful-solar-flare.html http://www.space.com/10862-sun-erupts-powerful-solar-flare.h... [3] https://www.youtube.com/watch?v=heVeq_anewU https://www.youtube.com/watch?v=heVeq_anewU