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Posted: |
Apr 13, 2013 - 11:35 AM
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By: |
Bob DiMucci
(Member)
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UHF isn't any mystery that a Wikipedia search couldn't solve. In short, UHF (Ultra High Frequency) covers a different band of the electromagnetic spectrum than does VHF (Very High Frequency). The VHF band could only accomodate so many stations without stations causing interference with each other, so the FCC allocated the UHF band, which during World War II was reserved for military use, to additional television stations. UHF stations had slow growth, however, because (1) they were limited by FCC policy in the power of their transmissions, (2) not all television sets were able to receive them, and (3) they required a different type of antenna to receive them than did VHF broadcasts. So, to spur UHF growth, the FCC eventually expanded the power that UHF stations could use and required that all TV sets be capable of receiving them. Hence the two dials on sets. UHF allowed the expansion of broadcast alternatives beyond the big three networks. Many UHF stations were independent stations, Public Broadcasting Service, religious broadcasting, or Spanish language. Much more info can be found at: http://en.wikipedia.org/wiki/UHF_television_broadcasting#United_States
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Posted: |
Apr 16, 2013 - 6:17 AM
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By: |
jackfu
(Member)
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Oddly enough, as frustrating as the old TV's seemed to be when I was growing up (waiting for them to "warm up", tube problems, unreliability, etc.), I still have a 1983 RCA XL 100 25" console model that saw over 30 years of everyday usage, 12 hrs a day, often, that still works as well as when new. I gave it to my father-in-law as a backup for his use after I got a big-screen unit, because I didn't have the heart to throw it away. He still uses it most everyday.
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Posted: |
Apr 16, 2013 - 2:19 PM
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By: |
Bob DiMucci
(Member)
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Oddly enough, as frustrating as the old TV's seemed to be when I was growing up (waiting for them to "warm up", tube problems, unreliability, etc.), I still have a 1983 RCA XL 100 25" console model that saw over 30 years of everyday usage, 12 hrs a day, often, that still works as well as when new. By 1983, even the XL-100, which was RCA's lowest price line behind the Colortrak and Dimensia, was probably "all solid state"--remember that term?--meaning no tubes.
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