Special Features:

Mtg method: any acceptable and plate; mtg confg: two 0.109 in. Diameter mtg holes spaced 2 in. C to c; fsc app data: amplifiers, audio frequency, radio, except navigation, airborne

Properties:

Two or more different types of items having a common mounting or mounted on each other which together form a portion of an amplifier but which in itself is not a complete functioning item and cannot be assigned a more definite item name.