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| Battery operated
four-valve TRF receiver |
| Ebonite front and
oak cabinet in art deco (Amsterdamse School) style. The
cabinet has three black legs on both sides. A protruding
drawer holds a complete set of coils and other material.
The radio was made by a small semi-professional
workshop, as can be seen by the materials used.
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| On the upper left
a
threefold coil base is visible. Below the coil base,
two tuning knobs (the left one is used for antenna
tuning), between the two
knobs a switch that can be used for
frequencies above 2000 meters. On the right three rheostats.
Below the rheostats sockets for headset or loudspeaker(s). An on/off switch is situated above the middle rheostat.
A cord set for the different voltages is situated at the
back. |
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Data |
Valves |
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| Serial number: |
52 |
| Dimensions: |
35 × 50,5 × 27,5 cm |
| Made in: |
±1926 |
| Purchased in: |
2008 |
| Voltages: |
4 / 45 / 90 V |
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Click on a valve for more
information |
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Circuit |
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A look inside |
| Tubes from left to right:
Philips A410, A409,
A415, B406. Transformers were made by German firm
Körting; resistor and condensers were made
in the USA by Megamold (Brooklyn, New York).
Both variable condensers were made in Germany,
but also bear the logo
Teva, N.V.
Maatschappij voor Technische Verbruiksartikelen,
Amsterdam. |
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Guarantee label |
Side view of the receiver |
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