Chassis mtd by plug-in method andretainer screws, used in horizontal position, fixture plate data, fixed, work secured by 2 locating pins and 3 screws, 2-3/4 in. Lg x 3-5/16 in. W x 5 in. H o/a, functional description, supports the main receiver rf ampliferand transmitter preamplifier module approx 4-1/2 in. Above the rt-332/arc -52 chassis in order to facilitate alignment trouble shooting or repair of the module with normal electrical and mechanical connections