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Radio Propagation


Solar X-rays:
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D-Region Absorption
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Created by PA4RM

The FCC has invited comments on a Notice of Proposed Rulemaking (NPRM), that would allow AM broadcasters to transmit an all-digital signal using the HD Radio in-band on-channel (IBOC) mode, known as MA3.1

“We tentatively conclude that a voluntary transition to all-digital broadcasting has the potential to benefit AM stations and provide improved AM service to the listening public,” the FCC said....

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