Original December 1938 issue of Service: A Monthly Digest of Radio and Allied Maintenance, Vol. 7, No. 12. Features technical articles on radio circuits, amplifiers, time tuning, test equipment, and early television transmission. Includes the annual index and vintage RCA test-equipment advertising. A collectible piece of pre-WWII radio and electronics history.
Original December 1938 issue of Service: A Monthly Digest of Radio and Allied Maintenance, Vol. 7, No. 12. Features technical articles on radio circuits, amplifiers, time tuning, test equipment, and early television transmission. Includes the annual index and vintage RCA test-equipment advertising. A collectible piece of pre-WWII radio and electronics history.
