Common Aviation Frequencies: A Pilot's Communication Guide
Milcom Monitoring Post: North Atlantic (NAT) MWARA Profile and Frequencies
NOAA Frequencies
Wall Street Tries Shortwave Radio to Make High-Frequency Trades Across the Atlantic - IEEE Spectrum
NOAA Weather Radio Info
Information Radio Stations across America
K3RRR on X: "The 1920s was a fascinating time..on both sides of the Atlantic as hams re-wrote radio science & proved "short waves" was a valuable means of long-distance communication. At the