Matl: 6061 aluminum alloy qq-a-200/8 or cold rolled steel astm-a108; finish: chemical conversion coating mil-c-5541 class 3, primer coating mil-p-23377, or cadmium plate qq-p-416, class 1, type ii; oper temp: -40 to +85 degrees c; storage temp: -65 to +150 degrees c; power: 100 w nom, 125 w max; isolation: 19 db min; vswr: 1.25: 1; parts shall be used in icbm operational ground equipment