The coil window is 1,8 x 1,8 cm.The diameter of wire is 0,07 mm. By the way, the size of core of the original transformer (cutted)is: 7,4 x 5,1 x 1,8 cm. I will really appreciate your help in order to have the specifications to build the transformer (there are some specialized places in my city but they need the indications, diameter of wire, number of wounds, core size, etc.). That is to say, I need to couple the pickup part and my apparatus will become completely to the life. I tested the radio part using other transformer that only has one primary. It has the rubber parts flexible, the coil is ok, the magnet is strong and the needle has good movement. Is 17 ohm (at 1 Khz) (magnetic horseshoe pickup type). The measured the impedance of the pickup. On its primary receives the radio or pickup signal using a switch. The transformer couples the 27 tube (detector) with the 26 tube. I need to replace an audio interstage transformer (completely cutted)of my old radio RCA Radiola RCA RE-45. Inc.) New York (NY)įirst of all receive all of you my best greetings.
The apparatus is a portable disc equipment consisting of two motor-driven turntables, a recording amplifier, a nmicrophone, radio receiver and a loudspeaker. In French: TSF for Télégraphie sans fil.Īll listed radios etc. This description is from a news photo in 1931: A new type of portable radio recorder has been invented. Here you find 4985 models, 2934 with images and 4039 with schematics for wireless sets etc.
The Radio Collector's Directory and Price Guide 1921 - 1965.27 x 45.5 x 18.5 inch / 686 x 1156 x 470 mmĪll electric Radio (as in R32) with built in Electrola electric record player and amplifier with push-pull UX245 tubes, new for 1929.Model: Electrola RE-45 Victor - RCA RCA Victor Co.Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 9 inch = 22.9 cm.Alternating Current supply (AC) / 115 Volt.