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DDR Stasi ← WSA-1
HF/FSK spy radio burst transmitter
WSA-6, 1 also known as Projekt 32212,
is a modular spy radio for automated burst
transmission of secret messages, developed in 1987/8 by the OTS
of the Ministerium für Staatssicherheit (MfS)
— the Stasi —
of the former DDR (East-Germany), and used by the
Hauptverwaltung Aufklärung (HV A).
The device works in the 4-18 MHz
frequency range with an output power of ~ 20 Watt.
Rather than morse code,
it uses ±300 Hz Frequency Shift Keying (FSK)
with a speed of 900 baud.
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WSA-6 is a one-way radio system, that allows agent messages to be sent
at high speed in order to minimise the chance of detection and interception.
When used in a covert environment, such as from a hotel room, it was
commonly used in combination with a so-called umbrella antenna
– inherited from the earlier WSA-1 –
that was clamped between the ceiling and the floor.
It was available in two versions: a compact one for stay-behind and
paramilitary use, and a modular one that was suitable for concealment.
The latter is shown in the image on the right.
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The device is designed for the transmission of digital information that
has been pre-encrypted by the operator. Only the numbers 0 to 9 are
transmitted, in groups of 5 digits. The data is sent in a special variant
of the 2-of-5 code, or in abbreviated morse code. 2
It takes 5.5 seconds to send 200 groups (i.e. 1000 digits) in 2-of-5 code,
and 7.3 seconds to do the same in morse code.
For correct reception of the 2-of-5 data, Device 32213
has to be used at the receiving end (BASE).
For the reception of transmissions from the BASE, the agent used a regular
portable short wave receiver, which was commercially avaiable from virtually
any electronics store in the West.
Development of the WSA-6 started in 1985 and was finished in 1987,
after which a small prototype series of both versions were made.
It was intended for use by the Stasi as well as by the National
People's Army (NVA). It was also supplied to the Russians [B], but its
lifespan was cut short by the fall of the Berlin Wall
in 1989, followed by the collapse of the Soviet Union in 1991.
It is therefore unlikely that it was rolled out at large scale.
As a result, very few devices have survived.
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WSA is the abbreviation of Weitverkehrs-Sende-Anlage
(Long-range transmitter).
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Depending on the version: 'S' (standard) or 'M' (morse).
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PLEASE HELP —
Crypto Museum currently has one complete modular version of the WSA-6A
in its collection, without the accompanying controller. It is known that
some of the surviving WSA-6 units were assembled from Stasi leftovers,
after the fall of the Berlin Wall. In most cases, these controllers are not
functional.
We would like to know whether there are any museums or collectors with
a working WSA-6 setup, complete with a working controller. If this is
the case, we would like to get in contact with you.
If you would allow us to investigate your unit, it might enable us to
create a working replica of the controller.
- 32212-110: Compact version
This version consists of two devices:
(1) a burst transmitter and (2) a proprietary data entry device. The two devices
are interconnected by means of a fixed cable with a LEMO connector at the end.
It was usually stowed inside a watertight cache container.
- 32212-120: Modular version
The modular version consisted of 6 individual same-size modules, 1 wired
together by means of braided shielded cables. It was intended for
concealment in a vehicle or in the false bottom of a briefcase.
It was controlled by a Sharp PC-1350 pocket computer.
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Two of the six modules are slightly thicker that the others.
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With the compact version, the electronic circuits – consisting of 6 modules
in metal enclosures – are housed in a single metal case with three connectors
at the front, for antenna, controller and power respectively.
It was supplied with the 32210-64 umbrella antenna
of the earlier WSA-1 spy radio
and came with the 32210-41 control unit,
which has an LCD and a hexadecimal keypad.
The complete set was usually packed inside two watertight cache containers
that could be burried underground for an extended period of time.
The containers have rubber gaskets and the devices are wrapped in
oil paper and also in plastic foil for additional protection against moisture.
The compact version was powered by an external 12V battery that could be
charged by means of a separate power supply unit (PSU).
The image above shows a complete setup (not in collection).
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The modular version is slightly larger than the compact version, but is
more versatile as it can be concealed more easily.
The electronic circuits are spread over 6 same-size metal enclosures that are
connected to each other by means of braided shielded wiring. The device is
delivered in a box
with all modules taped together by means of cellotape.
The modules are interconnected like this:
The wiring between the modules cannot be separated but is long enough to
allow the modules to be arranged in any particular order and orientation,
subject to the available space in the concealment device. 12V DC power
is applied to the red/blue cable of module 4 (PA).
It has an inline 8A fuse (and a spare one)
and a series connected diode to protect the device against reverse polarity.
Rather than a proprietary controller, like the one supplied with the
compact version, it uses an
industry standard Sharp PC-1350 pocket computer
for programming and text entry.
The pocket computer used a BASIC program, stored on a battery backed RAM
card, to mimic the functions of the control unit of the compact version.
The device featured here, is of this type.
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When concealed in a car, the modular version was usually powered by the 12V
battery of the vehicle. When used from within a concealment, such as under the
false bottom of a briefcase, it was powered by a 12V gel battery, or two 6V
gel batteries connected in series. According from people involved in the
development of the device, it was sometimes concealed in a specially
prepared fire extinguiser [1].
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The diagram below shows a basic setup. At the left is the WSA-6/A transmitter,
with a controller connected to its serial port. At the right
is the receiving station (BASE), which would typically consist of an
East German EKD-300 or EKD-500 receiver, connected to a
32213 demodulator-decoder.
The WSA-6 can bridge a distance of 300 to 2000 km.
It would typically be used by Eastern Bloc agents
traveling in the West under diplomatic cover or assumed identity (legend).
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The transmitter is made for short-term use.
It has a built-in microcontroller, but has no controls of it own.
Instead it is operated by means of the externally connected
proprietary 32212-42 control unit, or a commercially available
Sharp PC-1350 pocket computer, via
a serial (RS232) port.
When setting up the device, the operator has to do the following:
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- Enter a pre-coded message in 5-digit groups
- Enter transmission frequency
- Adjust the 32210-64 antenna (manually)
- Start transmission
- Monitor the indicator reading
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The transceiver does not have automatic antenna tuning facilities. Instead,
the antenna must be tuned manually when the device is in tuning mode.
In this mode, the device transmits for 5 sec with a reduced
output power of 50 mW. Rather than using the programmed transmission
frequency, it randomly changes the offset from the desired frequency
within 60 kHz, so that it becomes more difficult to intercept the signal
and the final transmission frequency is not revealed.
The tuning indicator on the controller's display should be used for
adjusting the antenna for an SWR ≤ 2.
In any case, the transmitter will survive short transmissions with an
SWR > 2, and can even cope with shorted or open antenna connection.
If, when tuning the antenna, the SWR ≥ 2.4, the display shows 'FA'.
When the output power (nominally 20W) drops below 8W, the display shows 'FP'.
When the SWR is ≤ 2.4, transmission up to 10 seconds is allowed.
Moreover, 5 second transmissions can be repeated every 100 seconds without
problems, even with open or shorted antenna line.
If the 12V supply voltage drops below 10.8V, the display shows 'FU'.
➤ Operating instructions
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The two-out-of-five code, abbreviated 2-of-5, is a constant-weight code
that provides exactly ten possible combinations of two bits, and is used for
representing decimal digits (0-9) using 5-bits.
Each bit is assigned a weight, such that the '1' bits sum to the desired
value, with an exception for zero. For FSK transmission, the WSA-6 does
not use the standard 2-of-5 weighted code [5],
but a proprietary one created for the WSA-6, shown here in the rightmost
column:
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| | Standard | Special | |
| Digit | 01236 | WSA-6 | |
| 2 | 10100 | 00110 | |
| 3 | 10010 | 01001 | |
| 4 | 01010 | 01010 | |
| 5 | 00110 | 01100 | |
| 6 | 10001 | 10001 | |
| 7 | 01001 | 10010 | |
| 8 | 00101 | 10100 | |
| 9 | 00011 | 11000 | |
| 0 | 01100 | 00011 | |
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In the transmitted FSK signal, there is no separation between the
individual characters, and there is no space between the 5-digit groups.
A burst transmission starts with a 65 ms carrier, followed by a 55-bit
header to synchronise the decoder (Device 32213)
at the receiving end (BASE):
1010101010101010101010101010101101001010101101000001111
Likewise, the end of the telegram is signalled with the following footer sequence:
0111000000111110011101111
At the end of the program, the carrier stays on for another 250 ms, so that
the device can measure the output power and the supply voltage. After this,
the transmitter is switched off and a message is displayed on the controller.
The complete format of a telegram is thus as follows:
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Some devices — with firmware version 'M' — transmit a modified
FSK morse code instead of the 2-of-5 code described above.
In these devices, the EPROM in module 5 (CPU) is labelled 'M'.
In that case, the digits are coded as follows:
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| Digit | Pattern | Morse | |
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| 1 | 1 | . | |
| 2 | 101 | .. | |
| 3 | 10101 | ... | |
| 4 | 101011 | ..- | |
| 5 | 101101 | .-. | |
| 6 | 1101 | -. | |
| 7 | 110101 | -.. | |
| 8 | 11011 | -- | |
| 9 | 1011 | .- | |
| 0 | 11 | - | |
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The digits are separated by a '00' sequence. 5-digit groups are separated by
an extra '00' sequence. Unlike with the 2-of-5 code, there are no
synchronisation sequences at the start and end of the message.
Each transmission starts with a 65 ms carrier, followed by the data.
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WSA-6 uses a special technique to avoid group errors during transmission.
It first transmits the 1st digit of all 5-digit groups, followed by the 4th,
the 2nd, the 5th and the 3rd.
This way, group errors are distributed and will appear as individual
digit errors, making it easier to 'guess' the faulty characters from the
context.
The receiver attachment (32213) restores the original order.
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At present, we have no information about the communication protocol
used between the transmitter and the controller, as we don't have a working
controller to check. If you have a working controller, please contact us.
➤ Operating instructions
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Development of the WSA-6 at the
Technical Operations Division (OTS) of the Stasi
started in 1985 [A]. From the outset, two versions were planned: a compact
one that was intended for paramilitary use and that could be hidden in an
(underground) cache, and a modular one that could be hidden inside a concealment,
such as in the false bottom of a briefcase. The latter was used in combination
with the PC-1350 pocket computer
that has just been released in 1984 by Sharp.
The first prototypes became available during the course of 1987, and were
handed over to the various services for testing. On 14 September 1987,
Colonel Degenhardt of HV A Department VIII,
confirmed to General Major Schmidt
of the OTS how many WSA-6 (32212) devices of each
version (compact and modular)
were needed in the coming years, both by the Stasi and the NVA [4]:
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| | Year | Service | Compact | Modular | Total |
| | 1987 | Stasi HV A Department VIII | 31 | 4 | 35 |
| | | NVA Reconnaissance | 4 | 1 | 5 |
| | 1988 | Stasi HV A Department VIII | 55 | 25 | 80 |
| | | NVA Reconnaissance | 10 | 10 | 20 |
| | 1989 | Stasi HV A Department VIII | 40 | 10 | 50 |
| | | NVA Reconnaissance | 7 | 3 | 10 |
| | | Additional morse code variant | - | - | 5 |
| | 1990 > | Stasi HV A Department VIII | ? | ? | 35 |
| | | NVA Reconnaissance | ? | ? | 50 |
| | | | | Total: | 290 |
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➤ Read the letter of 14 September 1987
It is clear that Stasi was the major customer, as it would take
more than 200 of the projected production quantity. Although the
WSA-6 was made for high-speed FSK telegraphy, the above table also
reveals the existence of a morse code variant,
of which 5 were needed in 1989. The table only lists the requirements of
the Stasi and the NVA, but it is likely that the Russians
also received some WSA-6 units, as the
32212 Technical Manual
was translated into Russian in May 1988 [B].
It seems likely that the device was ready for large-scale production
in the second quarter of 1988 — the device in the Crypto Museum collection
was manufactured in the first or second quarter of 1988 —
but it is currently unclear whether any
devices were rolled out during the remainder of 1988 and 1989.
In any case the lifespan of the product was cut short by the fall
of the Berlin Wall on 9 November 1989, followed by the collapse
of the Soviet Union in December 1991.
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Compact transmitter
32212-110
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The compact version of the WSA-6 is housed in a metal enclosure that
measures 146 × 143 × 67 mm and weighs 2.5 kg. At the front are three
sockets for connection of the antenna (BNC), controller (8-pin LEMO) and
power (4-pin LEMO).
Crypto Museum does not have the compact version in its collection.
➤ Like inside the compact version
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Dedicated controller
32212-42
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The compact version of the WSA-6 is programmed and controlled by means of
the dedicated controller shown in the image on the right. The device is
powered by a 9V battery and communicates with the transmitter via
a serial cable that is connected to the 8-pin socket at the front.
The user interface consists of a 2 × 16 character Liquid Crystal Display
(LCD) and a
16-button hexadecimal keypad. Crypto Musem does not have this controller in
its collection.
➤ Operating instrunctions
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Modular transmitter
32212-120
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The modular version of the device is also known as WSA-6/A-MS or
Projekt 32212-120. It consists of 6 silver plated metal enclosures
with fixed wiring, that can be mounted in a concealment device in any
desired order or orientation.
The unit is powered by an external 12V DC source, such as a rechargeable
battery or a mains PSU. It is controlled by means of the
concealed controller 32212-43.
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Alternative controller
32212-43
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Although the concealed transmitter (32212-120)
could be controlled with the proprietary controller (32212-42),
it was generally used with an
off-the-shelf Sharp PC-1350
or PC-1600 pocket computer with special software.
It is connected to the transmitter via its 1200 baud serial port.
The PC-1350 was available in Western countries since 1984,
and could be carried in a briefcase on foreign travels
without raising suspicion.
➤ More information
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Umbrella antenna
32210-64
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As an alternative to the umbrella antenna, a the
32630-66 ground antenna – also known as KAE – was
sometimes used with the WSA-6. It allows the antenna to be layed out on
the ground, or even to be burried into the ground, so that it is completely
invisible from air reconnaissance.
Several Cold War bunkers in the former DDR had
such KAE antennas, and the results were surprisingly good, especially
at lower frequencies.
➤ More infomation
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The WSA-6 can be powered by any 12V DC power source, such as the
battery of a car. For concealed use from, say, within a briefcase,
it was usually powered by a Sonnenschein Dryfit A200 lead-acid 4.5 Ah
rechargeable battery.
In case of space contraint it was also possible to use two slimline
12V batteries connected in parallel, or two 6V ones connected in
series.
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The modular version of the WSA-6/A was intended for use from within a
cooncealment device, such as the small flightcase shown in the image
on the right. In this example, the case has a false bottom below which
the 6 modules and the battery are located.
The Sharp PC-1350 pocket computer, which is used
as controller, does not have to be hidden, as it was a common device among
scientists and business men in the late 1980s and early 1990s.
It could safely be carried around without attracting attention.
If the battery is too large for the concealment, it can also be replaced
by two smaller ones, either as two 12V batteries connected in parallel or
two 6V ones connected in series.
The photograph of the concealed WSA-6/A shown on the right, was made by
the Stasi, and was extracted
from the Russian manual of the device [B].
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For reception of the burst transmissions of the WSA-6/A,
the special MEZ-12 (Device 32213) is needed at the receiving end
(spy base).
This device decodes the special 2-of-5 coded numerals and places them
back in the correct order before printing them on the attached teleprinter.
➤ More information
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Below is the block diagram of the WSA-6/A. The circuits are divided over
six modules, identified by the six grey areas. Module (1) forms the
actual transmitter, which is also the FSK modulator. The 12.96 MHz signal
from the TCXO is first divided by 360 ± 1, 2 or 3, and then mixed with the
70.236 MHz signal from PLL1 in module (2). The result is passed through a
70.2 MHz crystal filter and mixed with the 74.2...88.2 MHz signal from PLL2
in module (3), resulting in the final 4...18 MHz frequency range with an
output power of 50 mW. Some dividers are controlled by the CPU.
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WSA-6/A block diagram shown in 20 W situation.
Move the mouse over the diagram to see the 50 mW situation.
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The 50 mW output from module (1) is fed to module (4), where it is
passed through relay y1a and used for antenna tuning and SWR measurement.
Via relay y1b on module (6) it is passed to the antenna.
Move the mouse over the diagram to see this situation.
Alternatively, the 50 mW signal is applied to the Power Amplifier (PA) on
module (4), where it is amplified to approx. 20 W and passed to one
of the two harmonic filters in module (6).
Behind the filters is a power meter (PWR) that allows the CPU to measure
the current output power.
All relays (Y1 and Y2) and some of the frequency dividers (n1, n2, n3 and n7)
are controlled by the CPU (indicated by red arrows).
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The modular version of the WSA-6/A is housed in six silver plated metal
enclosures that are interconnected by fixed braided cables. The compact
version is based on the same six modules – with more convenient shorter
wiring – housed in a single metal enclosure. Each module can
be opened by removing two screws from the bottom end, after which the
case shell can be removed.
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The exciter (module 1) delivers a modulated 4 to 18 MHz signal
with an output power of 50 mW, which forms the input of the
PA (module 4). The signal is derived from a 12.96 MHz
TCXO reference oscillator and a
HEF4750 programmable synthesizer/divider,
under control of the CPU.
The signal is then mixed with the signal from the first PLL
(module 2) to 70.2 MHz, and then again with the second
(programmable) PLL (module 3) to form the final 4-18 MHz.
The 12.96 MHz TCXO is also used as reference for both PLLs.
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The first PLL takes its reference signal from the 12.96 MHz
TCXO in module 1, and produces a fixed output signal
at 70.236 MHz that is applied to the first mixer of the
exciter (module 1).
The dividers in this PLL are fixed and are not controlled by
the CPU.
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The second PLL also takes its reference signal from the 12.96 MHz
TCXO in module 1, but produces a variable output signal
in the 74.2 to 88.2 MHz range, in 1 kHz steps.
This is done by using a
HEF4751 programmable divider
under control of the CPU in module 5.
The 74.2 to 88.2 MHz output of this PLL is applied to the second
mixer of the exciter (module 1), where it is mixed with the
70.2 MHz signal, resulting in the 4 to 18 MHz target range.
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The RF power amplifier (PA) is housed in module 4.
It amplifies the 50 mW signal from the exciter (module 1)
to approx. 20 W. The circuit is built around two Philips
BLW31 power transistors that are fitted to the large heatsink
at the right.
Module 4 also holds an RF power meter circuit and a white
hybrid circuit, both of which are used by the CPU to measure
the standing wave ratio (SWR) of the 50 mW test signal.
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Module 5 holds the Central Processing Unit (CPU) and forms
the heart of the system. It controls the clock dividers, the
2nd PLL, FSK modulation and the output power. It also measures
the output power and the standing wave ratio (SWR).
The CPU is built around a VB880 microprocessor, which is a
DDR-clone of the Zilog Z80 with extended temperature range [6].
Also present are a VB855 PIO, for controlling the PLLs,
and an Intel P8251A
USART for the serial port connection with the
external control unit.
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Before the output from the PA (module 4) becomes available
at the antenna socket, it is first passed through the comprehensive
RF filter in module 6, shown in the image on the right. This filter
removes most of the unwanted 2nd and 3rd harmonic side products,
thereby reducing the chance of radio and television interference.
Module 6 also holds the RF
power meter circuit and a white
hybrid circuit, both of which are used by the CPU to measure
the output power.
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We currently have one complete WSA-6/A-MS (S) in our collection.
This is the modular version with the 'S'-version of the firmware,
also known as Projekt 32212-120. As we don't have access to a
working control unit, we have no means of testing the device.
It would be great if someone with a complete and working
control unit would come forward and allow us to use it in order
to reverse-engineer the communication protocol between the
controller and the WSA-6.
Update July 2025
We now also have an incomplete WSA-6/AS (S) in our collection.
This is the compact version with the 'S'-version of the firmware,
also known as Project 32212-110. Unfortunately, the front panel
with the connectors is missing and the wiring is incomplete.
It came with an incomplete 32212-42 control unit, of which
the battery compartment and the EPROM with the firmware are missing.
➤ Contact us
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Problems with modular version
32212-120
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- Controller missing
- No suitable software for Sharp PC-1350
- Serial protocol unknown
- Umbrella antenna missing
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Problems with compact version
32212-110
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- Incomplete wiring
- Front panel and connectors missing
- One module physically damaged
- Unknown operational state
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Problems with controller
32212-42
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- Incomplete wiring
- EPROM missing
- Battery compartment and lid missing
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The control unit communicates with the transmitter via a 3-wire serial
RS232 interface, using only the TXD, RXD and GND lines. The TXD output
resistance is 1 kΩ, whilst the RXD input resistance is 22 kΩ.
The logic levels '1' and '0' are determined by the following voltages:
The serial port of the WSA-3/A (i.e. the transmitter) is terminated in
a fixed cable that is fitted to the CPU (module 5).
It has an 8-pin LEMO 2C.308 connector at the end, that mates with the LEMO
receptacle of the control unit. Below is the pinout when
looking into the control unit's receptacle.
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- n.c.
White TXD Data from radio to controller Grey Bd Baud clock - n.c.
Blue GND Ground - n.c.
Red RXD Data from controller to radio - n.c.
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The pin numbering is only printed at the solder side of the LEMO connectors.
Pin 3 (Bd) provides the baud clock for the UART in the 32212-42
control unit (i.e. the controller supplied with the compact version).
It is not needed when the
Sharp PC-1350 pocket computer
is used as controller.
In the latter case, a short cable between the PC-1350 and the WSA-6
data cable was used:
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The filter unit (module 6) has a fixed coaxial wire with a BNC
socket the end. An external antenna with an impedance of 50Ω and
a frequency range of 4 to 18 MHz should be connected to it before
activating the device. Typically used antennas are the
32210-64 (Umbrella) and 32630-66 (KAE ground antenna).
The output power is 50 mW or 20 W, under control of the CPU.
The WSA-6 can survive an open or shorted antenna connection for a short
period of time.
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RF Out RF output (50 mW or 20 W) GND - Ground
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The modular version of the WSA-6 is powered by a 12V DC source, such as a mains power
adapter or the battery of a car. The 12V DC power should be connected
to the red and blue wires of the fuse box that is connected to the PA
(module 4), as shown in the drawing below. Red is (+) and blue is (-).
Inside the fuse box is a diode to protect the device against reverse polarity.
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Device Modular spy radio transmitter Purpose Agent-to-Base burst communication Model WSA 6 Organisation MfS (Stasi), HV A Development OTS Project 32212 Users HV A VIII (Agents), NVA reconnaissance, Soviet Union (USSR) Country East-Germany (DDR, GDR) Year 1988 Control Serial port RS232 (see below) Frequency 4-18 MHz Resolution 1 kHz Stability ≤ 10-6 Ageing ≤ 10-6/year Output 20 Watt (50 mW in tuning mode) Impedance 50Ω Suppression 2nd harmonic: 25 dB to 40 dB 1
3rd harmonic: 35 dB to 40 dB 1
Non-harmonic: ≥ 40 dB
Stand-by mode: ≥ 60 dB Range 300-2000 km Waveform FSK Shift ±300 Hz Speed 900 baud Code Modified 2-of-5 (digits 0-9 only) Memory 1000 characters Processor VB880 (Z80 clone) Antenna 32210-64 (Umbrella), 32630-66 (KAE ground antenna) Power 12 V DC Current 5.5 A Battery Sonnenschein Dryfit A200, lead-acid type ≥ 4.5 Ah MTBF 6300 hours (est.) Temperature -15°C to +55°C Storage -30°C to +60°C Quantity 290 2
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Depending on frequency.
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Planned production quantity. From surviving serial numbers
it is clear that at least 100 units were made.
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Purpose Paramilitary use, stay-behind, cache Project 32212-110 Controller 32212-42 Humidity 90% @ 40°C Dimensions 145 × 143 × 67 mm Weight 2.5 kg Quantity ?
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Purpose Concealed use, agent communication Project 32212-120 Controller 32212-43 (i.e.: Sharp PC-1350 or PC-1600) Humidity 80% @ 30°C Dimensions 4 modules of 150 × 65 × 21.5 mm
2 modules of 150 × 65 × 25 mm
Plus wiring Weight 2.4 kg Quantity ?
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- Exciter
- PLL 1
- PLL 2
PA With 12V DC input CPU With serial port connection Filter With BNC antenna connection
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Standard RS232 Signals TXD, RXD Levels 1 (-5V to -3V), 0 (+3V to +5V) Output 1 kΩ Input 22 kΩ Format 1 start-bit, 8 data bits, parity bit, 2 stop-bits Speed 1200 baud Encoding ITA-5 (ASCII) Protocol Proprietary (currently unknown)
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Project 32212-42 Type Proprietary Power 9V 6F22 (crown) Current ≤ 0.1 mA (standby)
≤ 1 mA (power on, mode 1)
≤ 35 mA (mode 1)
≤ 35 mA (mode 2) Interface Serial RS232, 1200 baud, 8N1 Encoding ITA-5 (ASCII) Memory 1500 digits (300 groups) Dimensions 173 × 91 × 38 mm Weight 600 g
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Alternative controller
32212-43
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Project 32212-43 Type Standard pocket computer Model PC-1350 Manufacturer Sharp (Japan) Year 1984 Interface Serial RS232, 1200 baud, 8N1 Encoding ITA-5 (ASCII) Power 6V (2 × CR-2033 lithium button cell) Consumption 0.03W Temperature 0°C to 40°C Dimensions 182 × 72 × 16 mm Weight 190 g
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| | Project | Model | Description |
| • | 32212-110 | WSA 6/AS (S) | Compact transmitter with special code 1 |
| • | 32212-120 | WSA 6/A-MS (S) | Modular transmitter with special code 1 |
| • | 32212-111 | WSA 6/AS (M) | Compact transmitter with modified morse code 1 |
| • | 32212-121 | WSA 6/A-MS (M) | Modular transmitter with modified morse code 1 |
| • | 32212-41 | WSA 6/6 | Control unit (1st version) |
| • | 32212-42 | - | Control unit (2nd version, uncamouflaged) |
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32212-43
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PC-1350
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Control unit (3rd version, camouflaged)
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32213
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WSA 6/B
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Receiver attachment 2
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| • | 32210-64 | KSA | Indoor antenna (umbrella antenna) |
| • | 32630-66 | KAE | External ground antenna |
| • | ? | WSA 6/C | Test and repair controller |
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The difference between the FSK version and the Morse Code version
can be determined by the marking on the EPROM in Module 5 (CPU).
The letter (S) indicates the standard (FSK) version, whilst
the letter (M) indicates the morse version.
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The 32213 receiver attachment is used at the receiving side
(BASE) in combination with a suitable HF receiver, such as the EKD-300
or EKD-500.
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225 Modular ? 302 Modular Australian Spy Museum 312 Modular Crypto Museum, Netherlands 344 Compact Australian Spy Museum — module 1 only 358 Compact Australian Spy Museum — module 6 only 364 Compact Australian Spy Museum — module 6 only ? Compact Australian Spy Museum — module 3 only
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- Serial cable between Sharp PC-1350 and WSA-6
- Information about serial protocol
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Document kindly provided by Detlev Vreisleben [1].
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© Crypto Museum. Created: Wednesday 28 May 2025. Last changed: Saturday, 16 August 2025 - 14:04 CET.
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![Briefcase with the modular version hidden under a false bottom. Photograph: Detlev Vreisleben [1], extracted from [B].](img/WSA6_tarnung.jpg)
![Contents of the compact version. Photograph by Detlev Vreisleben [1].](img/WSA6_compact_int.jpg)
