Do you know where your nearest PEP radio station is? PEP (Primary Entry Point) radio stations are battle-hardened commercial radio stations, usually in the medium wave (AM) band, that serve as initial entry points for national Emergency Alert System traffic. They must have a backup generator for 30 days on the air, along with various other stringent requirements, so in a widespread disaster situation they could be vital information sources if local infrastructure is down. PEPs are not well known though - to the extent that there are very few places you can find a list of them. We have created the map shown above (also available as a PDF) to show the locations of the 33 known PEP stations. According to FEMA, new PEP stations are being added, and the map will be updated when new data is available. The map also shows NOAA all hazards radio frequencies for convenience.