@pwm @icedquinn @TheMadPirate @slowfallinward @ageha btw my example was not hypothetical:

https://en.wikipedia.org/wiki/John_R._Brinkley#Brinkley_and_radio

> In 1932, the Mexican government allowed Brinkley to increase his wattage to 150,000 watts. Several months later, Brinkley was allowed to increase to one million watts, "making XER far and away the most powerful radio station on the planet" that, on a clear night, could be heard as far away as Canada. According to accounts of the time, the signal was so strong that it turned on car headlights, made bedsprings hum, and caused broadcasts to bleed into telephone conversations.[53] Local residents claimed to not need a radio to hear Brinkley's station; with ranchers claiming that they received it through their metal fences and in their dental appliances.