German broadcast receivers in 1924 - part 2.
From the book 'Der Praktische Radioamateur" by
Hanns Günther and Dr. Franz Fuchs.
Dr. Georg Siebt, Berlin.
CR/1 |
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The CR1 was a crystal receiver covering the wavelengths from
150 m to 2000 m |
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| Flat coil receiver for the wavelengths 150 - 2000 m
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Flat coil receiver which could be used on its own as a crystal
receiver or as a tuner for a tube detector.  |
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A tube receiver with exchangeable coils to cover the wavelengths from 70 m to 24200 m. |
Dr. E. F. Huth G.m.b.H., Berlin.
Variometer receiver E 101 |
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"Radio-Maxim", Aarau.
Crystal receiver |
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This receiver used exchangeable coils and covered the wave
ranges 110 to 454 m, 160 to 630 m and 230 to 915 m.
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 This receiver was designed to be used at a distance up to 100 km from a broadcast transmitter. With exchangeable coils it covered the wavelengths from 110 m to 3000 m. |
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 The E 51 and E 52 was 3 tube receivers. E 51 covered 300 - 500 m and the E52 covered 900 - 4500 m |
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 These 3-tube audio amplifiers was used when the distance to the transmitter was more than 600 km. The V 102 used special power tubes. |
Otto Lotze, Berlin.
Crystal receiver D.Z.E. |
2 tube receiver D.R.S.E. |
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 RF amplifier and detector. Wavelength 250 - 700 m |
"Afra" A.-G., Berlin.
2 tube receiver R.E.2 |
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The R.E.2 receiver, which covered the wavelengths 250 to 700 m (top), shown with a 2 tube AF amplifier (bottom). |
Radiogesellshaft m. b. H. Behm u. Co., Berlin.
L.R.E. I and L.F.II |
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 L.R.E. I (left) with the 2 tube AF amplifier L.F. II |
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 This receiver covered the range 150 - 5000 m |
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"Radiofrequenz"-G.m.b.H., Friedenau.
4 tube receiver E.A.958
A very sensitive receiver with no feedback; designed by Dr. S. Loewe.
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Index |
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