The robust tube receiver after 85 years!

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Radio-Bauprojekte

Published on Premiered Nov 29, 2024
About :

With this film I would like to show you what is possible when I can systematically focus on quality rather than just cost in the design. I would like to demonstrate this using an old Telefunken design which was initially used as an export device but later unfortunately also for military purposes. Technical details: In the Torn. E. b. only the tube design RV 2 P 800 is used, which is used in all four stages. The power source for the heater is a 2 volt lead battery of the 2B38 type and for the anode voltage a dry battery with 90 volts. The power consumption is around 0.8 amps at 2 volt heater voltage and 0.012 amps at 90 volt anode voltage. From 1941/42 the inverter set EW. b. was used, mainly due to supplies and delivery problems. The inverter set EW. b. supplies the heater and anode voltage for the Torn. E. b. The device is powered by a 2 volt collector (2B38) Nominal power: Input: 2 volts 1.5 A Output: High-voltage side 100 volts 10 mA Low-voltage side 2 volts 0.75 A The inverter set c is used in vehicles. The total frequency range is divided into eight individual frequency ranges: Range 1 97 – 175 kHz Range 2 172 – 310 kHz Range 3 306 – 552 kHz Range 4 541 – 977 kHz Range 5 958 – 1720 kHz Range 6 1685 – 3030 kHz Range 7 2940 – 4760 kHz Range 8 4420 - 6970 kHz The external dimensions of the backpack receiver b are: Receiver backpack width 36.5 cm height 24.5 cm depth 22.0 cm

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