Commercial Television is 70 years old today.

[wa2ise]

Originally Posted by MelodyMaster

The British 405 line standard, in use until the 80's, used AM sound which wasn't "awful." I still have quite a few audio recordings of 405 I'd made, from the late 50s to 1963, for a current reference.

With intercarrier buzz and other such imparements making a mess of TV sound FM, I figured that AM would be totally trashed...

[ppppenguin]

Originally Posted by wa2ise

With intercarrier buzz and other such imparements making a mess of TV sound FM, I figured that AM would be totally trashed...

Using intercarrier sound with AM would be almost impossible. When the 405 line service was started in 1936 the sound quality was higher than any other transmission or recording medium available at the time. Apart from being mono, the basic quality of sound on System A was roughly equal to FM radio. It could of course be degraded by the receiver or before it was transmitted.

[MelodyMaster]

Originally Posted by wa2ise

With intercarrier buzz and other such imparements making a mess of TV sound FM, I figured that AM would be totally trashed...

Originally Posted by ppppenguin

Using intercarrier sound with AM would be almost impossible. When the 405 line service was started in 1936 the sound quality was higher than any other transmission or recording medium available at the time. Apart from being mono, the basic quality of sound on System A was roughly equal to FM radio. It could of course be degraded by the receiver or before it was transmitted.

System A TVs never used intercarrier sound, they all had separate receiver sections for video and audio. Also remember that 405 line sets did not use fine tuning, the channels were set by crystal or sealed BFO -frequently separate crystals for video and sound. When you bought a set it only had crystals for the channels receivable in your area. I remember our 1950s Ferguson only got chan 1 (Crystal Palace) and 9 (Croydon) then a channel (and vert yagi on the chimney) was added by a technician for a second ITA channel. (Midlands?) And, something you see in Dutch TVs, the Ferguson switched to the correct antenna for each channel. Antenna switching was also something hardwired by the tech.

[JBL_1]

Here is the line up for the first week of commercial television
in New York. Some where I have the week before. It was
pretty much all test patterns.

[Penthode]

Originally Posted by JBL_1

Here is the line up for the first week of commercial television
in New York. Some where I have the week before. It was
pretty much all test patterns.

I like the disclaimer at the bottom:
"All programs subject to change without notice".

[Keefla]

Gotta set the TIVO, not gonna be home for the Dodgers game.