William I. Orr
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Cubical Quad Antennas: How to Build and Adjust Quads
Orr, William; Cowan, Stuart
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Simple Low Cost Wire Antennae
William I. Orr; S.D. Cowan
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Simple, Low-Cost Wire Antennas for Radio Amateurs
William I. Orr; Stuart D. Cowan
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All About Vhf (Very High Frequency) Amateur Radio
Orr, William
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The Beam Antenna Handbook
Orr, William I.; Cowan, Stuart D.
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New! Beam Antenna Handbook
Orr, William I.
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