Chassis mtd by plug-in method andretainer screws, used in horizontal position, fixture plate data, fixed, work secured by 2 locating pins and 4 screws, 3-3/8 in. Lg x 4-1/4 in. W x 5in. H 0/a, supports the rf power amplifier module approx 4-1/2 in. Above thert-332/arc-52 chassis in order to facilitate alignment, trouble shootingor repair of the module with normal electrical and mechanical connections