Things You'll Need
Instructions
Attach the adapter to the antenna cable of your Atari 2600. The antenna cable comes off the side of the 2600's switchbox and terminates in two exposed wires. These need to be screwed onto the ports of an F-connector VHF adapter.
Connect the adapter to the VHF port (sometimes marked "Aerial") of your television.
Connect the power adapter and switchbox to your Atari 2600. Turn on the console.
Turn on your television and cycle through the channels until you find the output from your Atari 2600. The channel your Atari 2600 uses can be changed using the switch on the bottom-right hand corner of the console; the defaults are channels three or four.