Antique Automobile Radio Repair..
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We specialize in repairing automobile radio's form the 1930s to 1970s.
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Key Benefits: AM radio, trunk of a 1957 Mercedes SL190 roadster I purchased. car. Sorry, I don't know if it works - for the sake of this . All the tubes appear to be present. This weighs about 13 pounds and measures 8 inches x 9 inches x 6 inches. The tubes are: 7A7, 7B8, 7A7, 7B6, 7C5, and 7Y4. The chassis has a number stamp Z226924. vintage Motorla radio, model #unknown. The radio has six push buttons, five are labeled 1-5 and one has a M on it. No knobs present. Chrome would probably clean up good with a buffer/cleaner. Untested and sold as is. Note/Disclaimer: This item came from a radio/tv repair person who recently retired after 50yrs of work. old Ford Car Radio from 1959. The part number is 94MF. All the knobs are here as well as Oldsmobile Wonderbar tube radio has a built-in amplifier. It is original control unit for a old car or truck tube Radio. 1930's or the 1920's. It says PHILCO on it Stromberg Carlson AM tube Car Radio complete with knobs and tubes This is an old Car radio probably from the 50's or earlier. The maker is Stromberg Carlson, and the serial number is 161119792 (there's a sticker on the side Ford 4SH11000 (764) Tube car radio..Number faceplate is missing but knob still turns the dial wich is present Data Source ................................... RCA RC-29 - 1975 Prefered Substitutes .......................... 6AF4 6T4 Substitutes ................................... 6AN4 6DX4 Application Miniature type used as a local-oscillator tube in uhf color and black-and-white television receivers covering the frequency range from 470 to 890 MHz. Requires miniature 7-contact socket. For curve of average plate characteristics, refer to 6AF4A. Mechanical Data Outline ....................................... 5-1 EIA Base ...................................... 7DK Electrical Data Heater Characteristics Heater Voltage ................................ 6.3 Volts Heater Current ................................ 0.225 Amperes Direct Interelectrode Capacitances (approx) Triode Input ......................................... 2.2 pf Output ........................................ 1.3 pf Grid to Plate ................................. 1.8 pf Maximum Ratings (Design Center Values) Triode Plate Voltage ................................. 2 Volts Plate Dissipation ............................. 2.3 Watts Characteristics and Typical Operation Class A Amplifier Plate Voltage ................................. 80 Volts Grid No. 1 Voltage ............................ -11 Volts Amplification Factor .......................... 14 Plate Resistance (approx) ..................... 2.0K Ohms Transconductance .............................. 6700 MicroMhos Plate Current (Zero Signal) ................... 15 Ma. UHF Oscillatorillator Plate Voltage ................................. 135 Volts DESCRIPTION: This book emphasizes the repair and restoration of antique/vintage radio and gramophone equipment. Technical content is kept to a minimum and always explained in a way that can be followed by readers with no background in electronics. Those who have a good grounding in elcectronics but wish to learn more about the practical aspects will benefit from the emphasis on hands-on repair work, covering mechanical as well as electrical aspects of servicing. Repair techniques are also illustrated throughout. This new edition of the classic Practical Handook of Valve Radio Repair has been expanded to provide a comprehensive guide to the restoration and repair of valve audio and radio equipment for professionals and enthusiasts alike, with new material on valve amplifiers. A large reference section provides a range of information culled from many contemporary sources, and includes specialist dealers for valves, components and conmplete receivers. INDEPENDENT REVIEW: An ever-increasing number of Electronics Engineers, born since the transistor (1955ish), are asked sooner or later to help with a "wireless" or amplifier which contains "valves", or "tubes". In spite of countless similarities, valve systems have many important differences; and advice about servicing them is hard to come by. But at last, here is a densely-packed book of advice, spiced with humour, reminiscences, and informed opinions - but only when and where they really help. Whilst a pedant might pick holes in some of the theory and treatment (misplaced dots and outdated units for example), the practical advice is invaluable and will save patience, fortune, and lives. (Besides, if we are working on gadgets where 4.7 m meant 4.7 megohms, better to say so. We are even told the alternative American notation.) If you are new to Vintage Electronics you will not be baffled by 50-year-old "slang", because commonplace terms are explained. But if you have been "at it" for 50 years you will not feel patronized. You will soon find out how much you "didn't know you had forgotten."