Honorable Mention

FM Receiver

The user-friendly FM Receiver monitors polar orbiting weather satellites operated by the National Oceanographic and Atmospheric Administration (NOAA). It tunes from 60 to 800 MHz with an IF bandwidth of 50 kHz. The IF bandwidth was chosen because it’s optimal for the NOAA polar orbiting weather satellites; however, the FM Receiver also receives narrowband FM, television audio, and commercial FM stations. An ATmega8-16PI microcontroller is the heart of the high-performance receiver, ensuring good frequency stability. The MCU also enabled the inclusion of a tuner with a built-in controller, which provides fast tuning. The project features one of each of the following components: tuner, ceramic filter, second mixer, second oscillator, IF filter, audio integrated circuit, keypad, LCD, and power supply.

Charles Schee and Karen Lynn Steelman

U.S.

cschee@lakewebs.net

Abstract | Entry

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