03-27-2023, 06:27 PM
Peter;
I don't know if they ever manufactured a television, in the U.S or Canada, that used "direct" TRF amplification, outside of maybe some of the very early mechanical TVs. As for frequencies used that was pretty much set down for the post war period, some early postwar sets had a channel 1, the rest had tuners with channels 2 through 13, none were fix tuned like the British TVs, and it stayed that way until sets with built in convertors cam out in the late 1970s. I can't give you the frequencies used for these channels, but they were all VHF, and the info is posted pretty much everywhere.
Regards
Arran
I don't know if they ever manufactured a television, in the U.S or Canada, that used "direct" TRF amplification, outside of maybe some of the very early mechanical TVs. As for frequencies used that was pretty much set down for the post war period, some early postwar sets had a channel 1, the rest had tuners with channels 2 through 13, none were fix tuned like the British TVs, and it stayed that way until sets with built in convertors cam out in the late 1970s. I can't give you the frequencies used for these channels, but they were all VHF, and the info is posted pretty much everywhere.
Regards
Arran
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