Are key fobs are the canary in the coal mine of RF interference? There's a lot of stories of RF interference stopping them working in different places. Apparently, Ofcom dealt with 140 cases in 2010 alone: http://www.dailymail.co.uk/news/article-2057036/Trapped-driv...
> Are key fobs are the canary in the coal mine of RF interference?
If key fobs use receivers similar to the popular and dirt cheap "433 MHz RF Modules (ideal for Arduino)..." sold on eBay for <1$/piece: these are very, very crude and not selective to a particular frequency at all.
So, yes, they will stop working long before anything else (built a little more sophisticated) starts to show problems. Typically they are designed to be used in close proximity to your car, even if some people got used to operate it at considerable distance.
The FCC may intervene, we unfortunately don't know the rest of the story. It ends in an amateur radio enthusiasts speaking to the sign owner and getting an underwhelming response.
Are key fobs are the canary in the coal mine of RF interference? There's a lot of stories of RF interference stopping them working in different places. Apparently, Ofcom dealt with 140 cases in 2010 alone: http://www.dailymail.co.uk/news/article-2057036/Trapped-driv...