Why did old TVs require that the channel be on 3 before accessories like VCRs and game consoles could work on them?

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Anyone who grew up in the CRT era of TVs remembers that you had to turn the channel to 3 before you turned on the VCR or game console. Otherwise, the picture would not work. Why was this so necessary?

Edit: woah this blew up while I wasn’t looking! Thanks for the replies!

In: Technology

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Anonymous 0 Comments

Atari 2600 had a switch for 3-4 in case the channel 2 in the area was too strong and interfered with 3.
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