Re: 8-bit Computer TV Channel Use

[Fred Cisin]

The NTSC Atari 2600 switches between 2 & 3.

On Tue, 19 May 2015, Kyle Owen wrote:
As do the TRS-80 CoCos, if I'm not mistaken.

3/4 for the ones intended for USA.  Other options might have been 
available for export models.