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Ampliphase is the brand name of an amplitu … Ampliphase is the brand name of an amplitude modulation system achieved by summing phase modulated carriers. This modulation and amplifier technology family was originally marketed by RCA for AM broadcast transmitters. The Ampliphase system was not developed by RCA, but by McClatchy Broadcasting in the mid-1930s. McClatchy Broadcasting acquired the technology via patent acquisition. The Ampliphase design was originally proposed by H. Chireix in 1935 and termed "Outphasing" by him. He sold the patent to McClatchy Broadcasting that later sold the patent to RCA. RCA turned "Outphasing" transmitters into a mass-produced product. RCA's first transmitters using this modulation system were at the 50,000 watt level but later lower power transmitters such as 10 kw and 5 kw were made. McClatchy Broadcasting was a former group owner of AM, FM and TV stations as well as a California publisher of newspapers. McClatchy Broadcasting should not be confused with the present-day McClatchey Broadcasting LLC, a different corporate entity. Only one known transmitter of this type is still in use. KFBK in California maintains an RCA BTA-50H (the "last gasp" of the Ampliphase concept) as an auxiliary transmitter. Radio Caroline has a working RCA BTA-50H on display aboard its radio ship Ross Revenge, however this transmitter has fallen out of use and is unlikely to be put back on the air since the Ross Revenge currently broadcasts via relay to a more efficient land-based transmitter.o a more efficient land-based transmitter.
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https://www.rossrevengeplans.co.uk/All_Areas/Transmitter_Room/rcaBTA5H.html +
, http://www.rossrevenge.co.uk/tx/ampli.htm +
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| rdfs:comment |
Ampliphase is the brand name of an amplitu … Ampliphase is the brand name of an amplitude modulation system achieved by summing phase modulated carriers. This modulation and amplifier technology family was originally marketed by RCA for AM broadcast transmitters. The Ampliphase system was not developed by RCA, but by McClatchy Broadcasting in the mid-1930s. McClatchy Broadcasting acquired the technology via patent acquisition.red the technology via patent acquisition.
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| rdfs:label |
Ampliphase
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