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Portable direction finder
The StSg 52 was a portable direction finding receiver built by Wilhelm
Quante in Wuppertal (Germany) in the early 1950s. It was used
in the 1950s and 1960s to track down clandestine radio stations
and foreign secret agents. It's full name is Störspannungs-Suchgerät
(StSg).
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The StGS 52 is a single conversion super-heterodyne receiver
with an intermetiate frequency (IF) of 470 kHz.
It contains 5 valves (3 x DF51, DK92 and DAF91) and is powered by
two battery sets: 6V for the heater and 72V anode voltage.
It was suitable for 3 frequency ranges:
- LW: 150 kHz - 350 kHz
- MW: 520 kHz - 1,4 MHz
- GW: 1.02 MHz - 1.4 MHz
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The receiver is housed
in a wooden case, so that the internal window-antenna can be
used. It is operated by a trigger-switch hidden under the carrying
handle.
The unit shown here has been in use with the Dutch Agency for
Clandestine Radio, the RCD (Radio Controle Dienst), in The Hague (Netherlands)
until the 1960s.
A separate name shield with an internal inventory number
of the RCD is present on the receiver, just below the leather handle
(see the 5th image below).
Due to its limited frequency range (150 kHz to 2.7 MHz) it was
replaced later in 1952 by its successor the ASRV 52 that was suitable
for frequencies up to 11 MHz.
The name of the manufacturer, Wilhelm Quante, was changed to Quante AG
in the early-1990s. In 2000 the company was taken over by 3M, and their premises
in Wuppertal was given up shortly afterwards.
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The above information is all we have at the moment. We have not been able
to find circuit diagrams and a suitable user manual for this device.
If you have additional information, or additional accessories,
please contact us.
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- Personal correspondence between a previous owner and Quante AG in 1993
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