文档介绍：数字电视衣架天线
Digital TV Coat Hanger Antenna
Rabbit ears are for rabbits, not digital televisions. In this project, we’ll show you how to build your own digital TV antenna from wire hangers, a piece of wood and some pipe.
Television antennas prised of a series of metal rods cut to exact lengths and positioned so they receive a particular television frequency.
This design was invented in the 1960s by an engineer named Doyt Hoverman. It is particularly sensitive in the UHF frequency range, the same range used for the majority of digital television transmissions.
Tools:Electric drillScrewdriver or screw shooterScrewdriver bits 1/16-inch drill bit3/32-inch drill bit?-inch drill bitScrap wood
Materials:(6) wire hangers(1) wood board, approximately 3-inches X 20 inches X ? inch(10) #6 round head wood screws, ?-inches long, and washers (2) U-bolts, ?-inch diameter, 2 ?-inches long, nuts, washers(1) ?-inch diameter iron pipe, 24-inches long, one end threaded(1) ?-inch pipe floor flange(4) #10 wood screws, flat headed, 1 inch long(1) wood board, approximately 12-inches X 10-inches X ? inch(1) 75 to 300 ohm matching transformer with spade clips on one end and female F connector
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Before beginning, please note:What follows are general guidelines, not step by step procedures. Nearly every project de-scribed on Make: television will require som