antennas\ob11-5.pdfOP IBEAM 1. Introduction The OBI 1-5 is a high performing and very special...
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antennas\ob11-5.pdfOP IBEAM 1. Introduction The OBI 1-5 is a high performing and very special Fiveband Antenna for the 14, 18, 21, 24 and 28 MHz amateur radio bands