“The circuit I’m using,” repeated Steve, mystified. “Why, I’m using the only one known.”

“Till recently, yes,” nodded Phil, while the others stopped tinkering and stared at him in surprised interest. “Didn’t you read about that new contrivance that was demonstrated in New York, the other day?”

The boys shook their heads. They were still mystified, but their interest was unfeigned.

“Shoot,” demanded Dick.

“If you know anything, spill it,” added Tom with a grin.

“Oh, keep still and give the boy a chance,” Steve demanded impatiently. “You mean there has been a new discovery, Phil?”

The latter nodded, his eyes kindling with interest in the subject.

“It’s a new regenerative circuit,” he explained. “From the account of it in the paper, it must be a pippin. I think they’ve dubbed it the ‘Super Regenerative Circuit.’”

“Gee, that sounds like the right kind of medicine for me,” cried Steve joyfully. “Just what does this ‘super’ do?”

“We-el, I’m not overly clear on the subject, myself,” said Phil. “But from the newspaper description of it, I reckon it just about does everything on the calendar, in the amplification line, that is. Armstrong claims that a message from a distant broadcasting station, so faint, as to be barely heard when the ordinary regenerative circuit is used, can, by the use of the ‘super’, be amplified so as to be heard distinctly in every part of a large room. Now, if you were to ask me, that’s some classy amplification.”