"Not right now," objected Wes. "I haven't got that hollow leg that your gang seem to have developed. Besides, I'm on the trail of something."
"Yes?" Channing forgot about Joe's, and was all interest.
"I got a wiggle out of the meter there a few minutes ago. I'm trying to get another one."
"What was it like?"
"Wavered up and down like fierce for about a minute after I turned it on. Then it died quick, and has been dead ever since."
"Could it have been anything cockeyed with the instruments?"
"Nope. I've checked every part in this circuit, and everything is as good as it ever will be. No, something external caused that response."
"You've tried the solar tube with a dynode of the same alloy as the driver cathodes?"
"Uh-huh. Nothing at all. Oh, I'll take that back. I got a scratch. With a pre-meter gain of about four hundred decibels, I read three micro-microamperes. That was detected from a driver tube forty feet across the room, running at full blast. I wondered for a minute whether the opposing driver was doing any cancellation, and so I took a chance and killed it for about a half second, but that wasn't it."
"Nuts. Does the stuff attenuate with distance?"