Separated family radio signal

This signal is first discovered when you boost the signal at the Relay Tower 0MC-810. It is a simple message from a man named David to his wife Bonnie informing her that him and the kids made it to the bunker safely. It repeats after 3 seconds.

Location
The source of the signal is in West Everett Estates in a unmarked shed named simply backyard bunker.

Appearances
The separated family radio signal appears only in Fallout 4.