E. F. Johnson Company Two-Way Radio Display. 4 1/2" x 3 1/2" color photograph of a product display of Two-Way Radios made by the E. F. Johnson Co. at their 1971 Annual Meeting; identified are these products: Comco 608 Marine Radio Telephone, Comco 610A Marine Radio Telephone, Class A Citizens Radio, VHF FM Monitor Receiver, Messenger 121, Messenger 323-M, Micro-J Capacitor.