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Germany France Cold War Telefunken ESK-52 →
The device is housed in a
heavy wooden enclosure that also acts
as a transport case. It has a leather grip at the top and a
removable lid at the front,
that is held in place by two hinges
at the bottom and two spring-loaded clips at the top.
The B2M is a clone of the British Type 3 Mark II, commonly known
as the B2, but unlike the B2 – which consists of three
separate units – the B2M is an all-in-one device.
At the front panel,
the individual units – transmitter, receiver and PSU – are separated by
white lines. On the inside however, the
three individual units are still visible.
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PLEASE HELP —
This page currently acts as a placeholder for information about the German
B2M spy radio set. Crypto Museum does not have a B2M in its collection.
You can help us to improve this page by providing additional information.
➤ Contact us
In February 2018, German radio amateur Karsten Hansky (DR3HRT),
recorded the audio samples below. The first sample was taken from
the receiver of the B2M, whilst connected to a long-wire antenna.
The second sample is from the B2M's own transmitter, recorded
approx. 400 km away via the Web-SDR receiver at Twente University
in the Netherlands.
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Device Spy radio set Purpose Mid- to long range agent communication Manufacturer Telefunken, Hannover (Germany) Model M2B Successor ESK-52 Frequency 3-16 MHz Power Mains or battery Mains 90-140V and 190-250V AC Battery 6V DC
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Operation Crystal bands 4 (plug-in coils) → see below Output 20 W Antenna 13-17 m wire
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Operation Free running Bands 3 BFO Yes
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Coil
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Frequeny with A-size up
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Frequency with B-side up
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L1
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3 - 4 MHz
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3.75 - 5.25 MHz
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L2
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4.5 - 6.25 MHz
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5.5 - 7.5 MHz
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L3
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6.5 - 9 MHz
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7 - 10 MHz
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L4
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9 - 13 MHz
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12 - 16 MHz
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Document kindly provided by Daniel Guyez [1].
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Document kindly provided by Reinhard Glogowski [2].
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- Daniel Guyez, B2M images and circuit diagrams
Personal correspondence, 18 March 2019.
- Reinhard Glogowski, B2M operating instructions
Personal correspondence, 12 April 2023.
- Karsten Hansky (DR3HRT), B2M audio samples
Germany, 18-22 February 2018.
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© Crypto Museum. Created: Monday 12 February 2018. Last changed: Friday, 14 April 2023 - 08:29 CET.
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