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Special page devoted to
Building Antennas
Building Antennas: by Igor Grigorov, VA3ZNW
Almost all modern buildings contain lots metal parts inside. For example, any building has water pipes (as a rule copper), main wires, telephone wires, inner metal skeleton. Some building has a water (steam) heating system. The hidden metal parts can work as transmitting antenna. You only have to connect your transmitter to the metal in proper way.
In this article we discus antennas based on domestic water heater system. Let's name the antennas
'Water Heater Antenna System', or just WHAS. Certainly, diagram directivity and efficiency of
WHAS often are far from desirable. Anyway such antennas allow ham to be on the Air.
PDF file, 160 KB (ANTENTOP-01-2005, pages: 46- 48)
A Good Antenna for the 160- meters!
WHAS Antenna
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Last Updated: December 10, 2007 0:10