According to a rule proposed early this spring, the Federal Communications Commission would provide limited and temporary protection of radio astronomy observations on the waveband 608–614 Mc (UHF TV channel 37) from interference by commercial broadcasts. The proposed rule, which at the time of this writing has not yet been formally adopted, is framed with specific reference to the welfare, as viewed by the FCC, of the University of Illinois' radio telescope at Danville, Ill. The University of Illinois was the principal petitioner for protection.