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RTCA DO-169

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RTCA DO-169 1979 Edition, July 20, 1979 VHF Air-Ground Communication Technology and Spectrum Utilization

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Description / Abstract: Reports on VHF (118-136 MHz) spectrum utilization including the investigation of modulation techniques and reduced channel separation. Identifies problem areas and recommends, among other things, use of reduced channel spacing on a selective basis.
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