On 02/28/2010 04:50 AM, Gene Heskett wrote: > On Saturday 27 February 2010, Folderol wrote: >> Sounds suspiciously like some form of quadrature demodulator. Rather >> like GEC/Sobel introduced with their 1018 TV chassis in the 1960s. >> Oh how we laughed ... > > Why were you laughing? Zenith did this, with a self excited circuit, using a > type 6BN6 gated beam tube to recover the audio directly from the 4.5 mhz > inter carrier frequency, starting in the fall of '51 with the intro of the > '52 model year. It worked fairly well too. Stable, not sensitive to the > fine tuning setting, so folks out in the fringes could tune for a slightly > better if not as sharp a pix. ... > Yeah, I'll plead guilty to being an old fart, 75 now. And its been one hell > of a ride to get to this day. Mostly enjoyable, I'd do it again almost > exactly as it happened.
what a story! i didn't understand any of it, but i will sit down tonight, wade my way through everything wikipedia knows about broadcasting technology, over a glass of red fine, and try to appreciate it in full. great to see the breadth of backgrounds here on LAD. best, jörn _______________________________________________ Linux-audio-dev mailing list [email protected] http://lists.linuxaudio.org/listinfo/linux-audio-dev
