Re:Whatever happened to Channel 1?
by mozumder on Thursday December 10, 2015 @12:46AM
(#10709087)
Project idea: Make a television system from vacuum tubes that broadcasts in the unlicensed home bands (2.4GHz & 5GHz). It could be either digital or analog, but it needs to use vacuum tubes. I'd like to see if such technologies would have been possible back in the 40's. Bonus points if they could transmit hi-def signals (1+ megapixels)
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Re:Whatever happened to Channel 1?
by Johnythree on Thursday December 10, 2015 @06:31AM
(#10710111)
As the article mentions, Amateur Radio Operators have been active in Amateur TV (ATV) since day one.
https://en.wikipedia.org/wiki/Amateur_television
The Hams don't use the Commercial TV frequencies of course, but transmit on the Amateur bands.
See the Wikipedia article for frequencies used (including the bands that you mentioned).
And yes, years ago the Hams built their own gear using vacuum tubes. These days they are building Digital and HD TV.
Do a search on "Amateur TV", it's still a big part of the hobby.
If you hunt around, you will find many books and constructional articles on ATV.
Oh, and to build your own Amateur TV station you'll need the appropriate grade of Ham license.
You "might" be able to do transmissions that high with https://en.wikipedia.org/wiki/Krytron
Re:Whatever happened to Channel 1?
by sethkontny on Thursday December 10, 2015 @02:39AM
(#10709396)