Ametek Ortec Model 935 Quad 200-MHz Constant-Fraction Discriminator. FCC Location: B's Office BOX # 599. Box Size 13"x 11"x 3 , Weight 4 Lbs. This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Amplifiers". The seller is "fcc-emarket" and is located in this country: US.This item can be shipped worldwide.