Instructions
Connecting a Sega Master System to a Television Set
Set your television on Chanel 3, which is the default setting for the Sega Master System's RF Box.
Disconnect any television cables from the back of the TV set. Don't worry; you'll be reconnecting the cable in just a minute.
Connect the RF Coaxial Cable on the Sega Master System's RF Unit to the back of the television, where the cable box wire would usually be connected.
Connect the cable wire to the RF Unit's Antenna receiver to restore television signal to your TV.
Connect the other end of the RF Unit--the end that is not plugged into the television--into the Sega Master System.
Plug the unit's power adapter into a nearby wall socket and turn on the unit to ensure that it is properly connected to the television.