Antique radios, Old Time Radios
RD4Ma
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Country:
Germany
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| Identical to |
RD4Ma
= LM318
|
| Base |
SPECIAL TUBEBASE in general (Codex=sp)
2 Top contacts.
|
| Filament |
Vf 3.3 Volts / If 4.2 Ampere / Direct |
| Description |
CW magnetron designed to operate as oscillator at wavelenghts from 18 to 26 cm, delivering 12 to 16 W output power. Direct heated tungsten cathode.
- 30 to 40 mA max anode current at 1300 to 900 volts
- 1100 volts at 40 mA typical operation, delivering 14 W at 20 cm
- 1300 to 1400 gauss magnetic field
- 40 W max anode dissipation.
Frequency modulation in the order of 100 to 200 KHz/V could be obtained by anode voltage modulation.
Text in other
languages (may
differ)
|
Dimensions (WHD)
incl. pins / tip |
40 x 125 x 46 mm / 1.57 x 4.92 x 1.81 inch |
| Weight |
93 g / 3.28 oz |
| Tube prices |
3 Tube prices (visible for members
only)
|
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
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RD4Ma: Tabu Röhren-Codex, 1948
Anonymous 15 Collector
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RD4Ma: Telefunken 1943
Robert Schmalstieg
More ...
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Collection of
Collection of a member from D |
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