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Automatic FM Transmitter: Efficient Digital Music Transmission to Car Antennas

The project focuses on developing an automatic FM transmitter that can transmit digital music from devices to car antennas, solving the problem of unused radio frequencies between cities. By creating an FM radio frequency scanner, the transmitter will efficiently detect available stations for seamless operation. Our goals include mastering frequency synthesizers, detecting unused FM band stations, enhancing communication understanding, and evaluating market potential. This innovation aims to provide a user-friendly solution while navigating existing technologies like the Griffin iTrip.

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Automatic FM Transmitter: Efficient Digital Music Transmission to Car Antennas

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    1. Automatically Tuned FM Transmitter Dan Fishman Saim Jafri Michael Thylur Electrical Engineers 2007

    2. Project Idea FM transmitters to transmit from digital music devices to car antenna Between cities the unused radio frequency in one city might be used by a broadcasting station in the next The synchronization of the transmitter and receiving radio frequencies can be quite time consuming An automatic FM radio frequency scanner that finds unused stations will be developed

    3. Project Goals Develop a full understanding of frequency synthesizers that use a Divide-by-N and PLL Successfully detect an unused station in the FM band To better understand communication systems Investigate the marketability of our system

    4. Existing Technologies Griffin iTrip Power source: receives power from ipod Modulation: FM Stereo Frequencies: 88.1-107.9MHz High stability crystal oscillator, phase-locked loop control Transmits Audio frequencies: 50Hz to 15KHz Operating range: 10-30 ft

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