Answer:
Yes it will. The Technics SL-BD20 Turntable requires a P-mount type Cartridge.The AT3482P Cartridge is a P-mount type.
You may also use any of our Universal Mount type Cartridges.These are really just P-mount models with an adapter provided for mounting the Cartridge to a Headshell. A Headshell has the mounting bolts for mounting the Cartridge to it spaced a half inch apart. Cartridges that are for Headshell mounting only are typically referred to as being half-inch mount type Cartridges.You may use either a P-mount or a Universal Mount model Cartridge on your Turntable.