Recon Craft Theta Beacon

This radio signal, transmitted from a fallen UFO, is an unintelligible language interrupted by bursts of static. The signal is on a loop, like an automated distress beacon. When reversed and slowed down, it says "The Alien is never alive" which is a reference to the fact that a dead alien is always found in works of fiction. Because of its limited range, a player can easily track the signal to its source. See the article on the Alien Crash Site for much more information.

When the source of the signal is found, the player will encounter a downed alien spacecraft with an alien corpse. The corpse cannot be searched. However, an Alien Blaster weighing 2 pounds with 120 rounds of ammunition should be scattered nearby. This ammo is incredibly rare and should be savoured however occasionly Enclave Eyebots will drop some.

you can also finding ammo around the outside of the Oasis.

If you use the noclip feature on the console and travel under the alien craft you will find a ham radio labeled Recon Craft Theta Becon. If you interact with it, text saying "See you later" will pop on-screen, similiar to the Chinese Radios.