"I know that fellow," said Brandon. "I was inspecting his outfit just a few days ago. He's got a pretty good amateur set, too. He's located in Cooperstown, not twenty miles from here."

"My, you must know every station in this part of the country!" exclaimed Joe, surprised.

"It's my business to know them all," said Brandon. "And if anybody takes a chance and tries to send without a license, it's up to me to locate him and tell him what's what."

"It must be hard to locate them, isn't it?" asked Jimmy.

"Sometimes it is," returned the radio inspector. "I'm tracing down a couple now, and hope to land them within a few days."

The little company had some further interesting talk, and then, as it was getting rather late, Dr. Dale and his friend rose to go.

"I'm glad to have met all you fellows," said the radio expert, shaking hands all around. "If there's anything I can do to help you along at any time, Dr. Dale can tell you where to find me, and I'll be glad to be of service."

The boys thanked their visitor heartily, and promised to avail themselves of his offer in case they found that they needed help. Then Bob saw the visitors to the door, and returned to his friends.

"We're mighty lucky to have met a man like that, who knows this game from start to finish," said Joe. "I'd give a lot to know what he does about it."

"You never will know as much," said Jimmy. "Mr. Brandon is a smart man."