Athens Messenger in Athens, Ohio

FM Radio: Ground Wave Limits and New Band Details

AM stations rely on ground waves with 100 mile daytime range and longer at night, while FM uses direct line broadcasting with a horizon reach. New FM sets will combine AM and FM functionality, operating with a switch. FM spans 88 to 108 megacycles, AM from 550 to 1600 kilocycles. FM operation mirrors AM. higher costs but not prohibitive. tone control improves fidelity. FM promises less static, fewer interference, full audio range, and consistent day–night service. FCC orders FM stations to begin experiments December 1 and full service by January 1.