noon
Mr. Swift built two powerful but miniature radio sets ; one for receiving , one for transmitting . Tom , meanwhile , was busy on another device , also highly miniaturized , combining features of both the electronic decoder and Tom 's famous midget computers , known as Little Idiots . With this equipment , Tom hoped , Exman would be able to monitor all communications at Brungarian rebel headquarters , then radio the information to Enterprises . Chow brought lunch to the laboratory at noon , and Bud came in later . Both stayed to watch the outcome of the experiment . Hank Sterling and Arv Hanson joined the group . By midafternoon the equipment was ready for a tryout .