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Re: Canarsie CBTC

Posted by tracksionmotor on Tue Jun 14 23:43:43 2005, in response to Re: Canarsie CBTC, posted by RonInBayside on Tue Jun 14 08:54:28 2005.

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Reception for Jenkins motion picture broadcasts was dual mode OTA...
AM radio for aural, shortwave for video. The President Wilson broadcasts went over a combination of twisted pair and shortwave and not available to the public. AT&T pioneered AM circuits for international telephone and SSB for cable, not having a clue that SSB
was so very able for HF radio. SSB was experimented with vigor after WW2 and it wasn't until the USAF teamed up with Collins Radio in the fifties that it took off. BTW: my mother set up PicturePhone circuits in the early sixties. CI peter

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