7.05 to 10.0 kmc, operating freq range; termination data, mil, flange, waveguide, type ug-138/u; waveguide type with which used, mil, waveguide, type rg-51/u or rg-68/u; over-all dimensions, 10.250 in. Lg, 5.00 in. W, 4.00 in. H; gray paint outside finish; jetds identification data, slotted section, waveguide, type no. Im-215/usm-37e