July 2017
Intermediate to advanced
1988 pages
112h 28m
English
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Chapter7.20
HF Shortwave Radio
Introduction
HF Broadcasting Definition
HF (High Frequency) broadcasting uses the 2–26 MHz range of frequencies—from just above the MW (Medium Wave) AM (Amplitude Modulation) broadcast band to near VHF; three octaves of frequencies coverage.1 The 2–5 MHz section is generally denoted Tropical Band. The transmissions are typically conventional AM.
General Introduction to HF Broadcasting
HF broadcasting is different from conventional AM on the MW (Medium Wave) broadcast bands. Everything about HF broadcasting is dependent on propagation via skywave. Domestic MW in the days of the clear channels was dependent on skywave and ground wave at night but now is primarily a ...
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