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November 12, 2004

Low Power TV r us : SF Bay Area Indymedia
get your pirate tv kit and training
Free Radio Berkeley's engineering staff has managed to design and develop low power VHF and UHF transmitters by the creative use of off-the-shelf technology. So far, design and engineering efforts have yielded TV transmitters capable of reaching a distance of 4-5 miles. Estimated cost for a VHF transmitter and antenna system with an effective radiated power of 75 watts is about $500, $700 to $800 for a system with an effective radiated power of 400 watts. For an UHF system, add about $300 to the above amounts. Coverage pattern is 220 degrees, not fully omni-directional. Further work is continuing on the development of antenna systems.

TV broadcasting kits will be made available starting in mid November. The transmitters accept any composite video source with line level audio. Typically, the video source will be a multiple disk DVD player or a computer with video files stored on a large capacity hard drive. Live broadcasts are certainly a possibility. This would require several video cameras and a video switcher/mixer. A 200 disk DVD juke box style player would hold almost two weeks worth of program material, assuming two hours per DVD. Considering the quantity of video material available, most of which will never be seen on either broadcast TV or cable/satellite feeds, there should not be any problem providing audiences with an exciting and compelling selection of material.

Posted by yatta at 01:29 PM