- Agatha's Station
- Vault 101 PA System
- People's Republic of America Radio
- Pitt Broadcast (The Pitt add-on)
- Ranger Emergency Frequency
- Vault 101 Distress Signal
- Wernher's Distress signal (The Pitt add-on)
- Outcast Distress Signal (Operation: Anchorage add-on)
- Recon Craft Theta Signal (Mothership Zeta add-on or when you get near the Alien Crash Site)
- Chinese Radio Beacon
- Radio Signal Alpha Lima (AL)
- Radio Signal Echo Foxtrot (EF)
- Radio Signal Kilo Bravo (KB)
- Radio Signal Oscar Tango (OT)
- Radio Signal Oscar Zulu (OZ)
- Radio Signal Papa November (PN)
- Radio Signal Sierra Romeo (SR)
- Radio Signal Sierra Victor (SV)
- Radio Signal Yankee Bravo (YB)
- Only Galaxy News Radio and Enclave Radio can be accessed right away from coming out the vault. All other signals (like the signals obtained from various power stations all over the map) must be discovered or the appropriate quest completed.
- Upon receiving your Pip-Boy 3000, the Vault 101 PA System will be the only radio signal you pick up (only after exiting Vault 101 will you get other radio signals).
- Upon downloading the Mothership Zeta add-on, the Recon Craft Theta Signal can be heard all over the Capital Wasteland and vanishes upon the completion of the Mothership Zeta add-on.
- Upon downloading The Pitt add-on, Wernher's Distress signal can be heard all over the Capital Wasteland and vanishes upon the completion of The Pitt add-on.
- Upon downloading the Operation: Anchorage add-on, the Outcast Distress Signal can be heard all over the Capital Wasteland and vanishes upon the completion of the Operation: Anchorage add-on.
- Galaxy News Radio, Enclave Radio and Agatha's Station are broadcast across the entire Capital Wasteland; for all others you must be in a certain range or your Pip-Boy 3000 won't pick them up. At the beginning of the game, however, Galaxy News Radio is only available in some regions around Washington D.C. You must complete Galaxy News Radio (quest) for it to broadcast across the entire Capital Wasteland. Also Agatha's Station Radio Signal is unable to be picked up until you complete the quest Agatha's Song.
- The "Morse Code Signals" (Radio Signal Alpha Lima, Radio Signal Echo Foxtrot, Radio Signal Kilo Bravo, Radio Signal Oscar Tango, Radio Signal Oscar Zulu, Radio Signal Papa November, Radio Signal Sierra Romeo, Radio Signal Sierra Victor and Radio Signal Yankee Bravo) all can be decoded to decipher a message, and they must be turned on at the towers they are being broadcast from.
- Strangely, these radio signals will become clearer the nearer the player gets to the ham radio, not the tower that broadcasts the signal.