WCUL-CA IS PROPOSING A DIGITAL COMPANION CHANNEL AT ITS PRESENT ANALOG SITE AND THE ATTACHED EXHIBIT SHOWS THAT THE 25.86 DBU (50,10) INTERFERING CONTOUR DOES NOT EXTEND ONTO ANY CANADIAN LAND MASS SO REFERRAL TO CANADA IS NOT REQUIRED. AN INTERFERENCE POPULATION REPORT IS ALSO INCLUDED SHOWING THAT THE PROPOSED OPERATION WOULD NOT CAUSE ANY PROHIBITIVE INTERFERENCE TO ANY OTHER STATIONS OR AUTHORIZATIONS. AS THE PROPOSED CHANNEL (36) REQUIRES AT LEAST 85 DB OF ATTENUATION OF HARMONIC ENERGY, A LOW-PASS FILTER WILL BE INSTALLED AS MAY BE NECESSARY IN ADDITION TO A STRINGENT MASK FILTER AND MEASUREMENTS WILL BE PERFORMED IF THE TRANSMITTER IS NOT SPECIFICALLY FCC CERTIFICATED TO COMPLY WITH SECTION 74.794 OF THE COMMISSION'S RULES.