Radio facsimile
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Information for Authority record
Other Identifiers
Wikidata:
Q1423499
Library of congress:
sh 85110470
Wikipedia description:
Radiofacsimile, radiofax or HF fax is an analogue mode for transmitting grayscale images via high frequency (HF) radio waves. It was the predecessor to slow-scan television (SSTV). It was the primary method of sending photographs from remote sites (especially islands) from the 1930s to the early 1970s. It is still in limited use for transmitting weather charts and information to ships at sea.
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