When I have to send a message in the form of a signal to the longer possible distance and the only option I have is to use is D-layer (because let’s say I have the frequency of 100KHz), what should be the angle of transmission (minimum or maximum) and why? Please explain in detail.
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Say. is someone trying to send a message to radio hobby ist's who cross the line? in that it use s tiny antennas to detect bursts o r electromagnetic radiation in the form of low frequency radio signals. The bursts of white noise occur be low I MHz and can alert users to the presence of lightning before it becomes a threat. The dev ice is being marketed to boaters. golfers, and others involved in outdoor
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