"I'm afraid," Ephrem says as he opens the door into the office for you. He walks towards a large radio in the back. "You're not going to be able to fix this, at least not with the parts we have here." He holds up a small glass bulb to you, a large crack in it. "You know what this is?" he asks, the more technical of you may know. "It's a vacuum tube. This here tube helps keep my radio going. My idiot of an assistant dropped the radio a week ago after hearing something about an Enclave, or whatever on some station I've never heard of before."
He hands one of you the broken tube. "Thing is, there's no free one left in this town and no one's willing to go to Columbia to trade for one. Raider's are too damn bad and they're too expensive for the few caravans we have to deal with 'em. Thing is, I know that there has to be a spare one out there in the wasteland, out in them abandoned houses. Care to get me one? I can offer a few free nights over in the boarding house," he points in the direction of the old church, "as well as 150 tabs apiece."