This Rhombic Antenna was from Popular Electronics Magazine October 1975 Edition. Cheap cost Antenna , and if your roof house non metallic can match with contour house. Easy to build and Install , provides good reception , almost 14 dB gain. It can be installed without support masts. High gain, broad bandwidth and good directionallity are characteristic of the rhombic's performance.
Rhombic Antenna Design
The first step in designing the rhombic is to decide what channels you want to recieve.
The relative location of their transmitting antennas with respect to your home. And the physical layout of the installation site ( we assume the antenna is mounted horizontally on the pitched roof of wood house) , for modern today house we should move antenna to outside of roof, because today house construction using steel frame.
For optimum result three basic designs are given, covering VHF Lo, VHF Hi, and UHF Bands. The VHF Lo Antenna measures 25 Feet ( 7.6 m) on a side and cover channels 2 through 6 and the FM Broadcast Bands.
The VHF Hi design , spanning channels 7 through 13, has legs one-third the length of those for VHF Lo.
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