Question to the knowledgeable group here, is AM radio frequency useful for anything else? Would terminating commercial radios benefit any other industry?
* https://news.ycombinator.com/item?id=35416627
Bad weather, traffic, mountain passes, etc.
Emergency broadcasts.
Usually it's just a a couple boring boring words on a loop.
Perfect for finding lost objects / dogs / cats. Weather announcements.
What else??
Good for long distance, but only with a band-matching antenna (and plenty of power) at the transmitting end.
But fantastic at reaching multiple simple receivers simultaneously over a very wide area with voice-quality transmission when you do.
Making good antennas for this frequency range generally requires rather physically large antennas as the wavelength is quite large, so finding objects is not really a good use of these frequencies.
AM stations usually have a tower that is the antenna.