Original April 1938 issue of Service Radio: A Monthly Digest of Radio and Allied Maintenance, Vol. 7, No. 4. Features vintage radio servicing information, technical diagrams, receiver case histories, auto-radio material, and test equipment articles. Includes an attractive period RCA Crystal Pick-Up advertisement. An excellent pre-WWII collectible for vintage radio, electronics, and technology enthusiasts.
Original April 1938 issue of Service Radio: A Monthly Digest of Radio and Allied Maintenance, Vol. 7, No. 4. Features vintage radio servicing information, technical diagrams, receiver case histories, auto-radio material, and test equipment articles. Includes an attractive period RCA Crystal Pick-Up advertisement. An excellent pre-WWII collectible for vintage radio, electronics, and technology enthusiasts.
