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#1
10-09-2007, 05:35 PM
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I've posted a page with more information on TV sound, along with a technical manual for the RCA RR-366.
http://www.earlytelevision.org/wireless_tv_sound.html http://www.earlytelevision.org/rca_rr366_manual.html 
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#2
10-09-2007, 06:15 PM
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Here's a page from the manual that came with my 1940 (built in 39) Zenith console.
While it's not "wireless" nor meant to recieve on SW, they must have seen TV sound needing to be output to something to be heard would be my guess... anyway, here's the manual page. It's an 8s563
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Big ass speakers with too much power, and nowhere to go fast... Altec A7-500; Peavey SUB118-HC Modded Quicksilver 8417 Mono Amps; Tapco J1400 Behringer MX2004X; Tapco T-231; Peavey VSX; Pioneer SR-303 Technics SL-1200MKII; Pioneer RT-701; Yamaha CDX-1030; KLH Model 18
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#3
10-09-2007, 10:12 PM
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TV sound was orginally to be AM. But just after WW2 the FCC decided to bump up the scan rate from 441i to 525i, and make the sound FM. Which annoyed David Sarnoff of RCA no end, as that would require RCA to pay licensing to Armstrong, the guy who invented/developed FM. But the FCC was correct in mandating FM sound for TV, AM would have sounded like crap, with much interference from the video sidebands of the TV signal.
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