Big Bubble

ANDOVER, MAINE Big "bubble," or radome, at Andover earth station for commercial satellite communications is 18-stories high, weighs 20 tons. Radome covers antenna in- side. Air pressure supports fabric structure, entered through air lock doors. COMSAT, AT&T, RCA, ITT and WUI own the station, which is managed and operated by COMSAT. Pub. by James R. Dunlop Inc., Washington, D. C. 48662-C dp HADE BY DEXTER PRESS, INC. WEST NYACK, NEW YORK $100 09