SAY HELLO TO . . . ARTHUR Q.BRYAN – who weighs 241 pounds without his hat and is known to a careless world as “Little Man.” You’ll hear him tonight on AI Pearce’s CBS program. Arthur Q. Bryan has been in radio since 1924, when he weighed only 150 pounds and sang on the air for the fun of it (which was about all you could get out of radio in those days.) He earned his living by selling insurance. Finally his singing got him the offer of a salary and he gave up insurance. In 1929 he turned announcer, then moved on to writing, producing and acting. Four years ago he went to Hollywood for a vacation and has been there since.