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78:32YouTube
SKAN Comms Club Video 1: How Radio Waves Work and Frequency Selection
@Grid Down Preparedness·Comms·20 views·yesterday
Technical introduction to radio wave propagation and frequency selection for short, medium, and long-range off-grid communications.
radio-fundamentalsfrequency-selectionoff-grid-commswave-propagation
14:49YouTube
Ask Dave, August 2026: More About AM
@ARRLHQ·Comms·23 views·3 months ago
Technical walkthrough of AM carrier signals using oscilloscope and spectrum analyzer, for radio operators building emergency comms skills.
am-radioradio-fundamentalsham-radioemergency-communications