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EB-200 Miniport
Portable monitoring receiver 10 kHz - 3 GHz

EB-200 Miniport is a high-end portable monitoring and surveillance receiver, developed around 1997 by Rohde & Schwarz in München (Germany). Despite its small size, it covers a frequency range from 10 kHz to 3 GHz with AM, FM, LSB, USB, CW, Pulse and I/Q modulation. It is suitable for portable and mobile use, and has a range of options, some of which are software-based [A]. The EB-150 1 and the EB-200 are the successors to the EB-100 Miniport monitoring receiver.

The device measures 270 x 210 x 88 mm and weights 5.5 kg, with the (optional) battery pack installed. All controls are at the front panel with its clear layout and intuitive user interface. 90% of the radio's features can be operated with a few key strokes without consulting the manual.

The EB-200 is partly menu-driven, but the most common settings have direct controls. The radio can be controlled remotely and has a fully digital IF stage that drives the built-in spectrum viewer. For external demodulation and processing, the IF I/Q signals are available at the rear (socket X6).
EB-200 receiver in operation

As the EB-200 can be expanded with a serial RS232 interface or an Ethernet LAN-interface, it was often used as part of a larger surveillance and monitoring system, such as the PAN-3000 that is used by the Dutch Radio Monitoring Service (AT). The receiver was also used as part of direction finding systems. The EB-200 was first announced in 1997. It became widely available in 1999 and was actively sold and supported until 2010, with the last firmware update being released in 2006.

The EB-200 used to be available at a price between EUR 15,000 and 20,000 (excluding VAT) depending on the features and options. Used devices can be found occasionally on auction sites like eBay. It was succeeded in 2005 by the larger and more expensive EB-500 (8 kHz-6 GHz) 2 .

  1. EB-150 is the EB-200 without the remote control facilities.
  2. Requires both the EB500HF and EB500FE hardware options.

Transport and storage case
EB-200 receiver in operation
Front panel
Rear view
Battery pack fitted to the bottom of the receiver, and connected to socket X10 at the rear.
EB-200 with telescopic antenna
Antenna connected directly to the socket at the front
1 / 8
Transport and storage case
2 / 8
EB-200 receiver in operation
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Front panel
4 / 8
5 / 8
Rear view
6 / 8
Battery pack fitted to the bottom of the receiver, and connected to socket X10 at the rear.
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EB-200 with telescopic antenna
8 / 8
Antenna connected directly to the socket at the front

All controls are at the front panel of the EB-200, whilst most of the connections are located at the rear, with the exception of the N-type antenna socket and the 3 mm headphones socket. At the centre of the front panel is a 64 x 240 pixel monochrome display that shows the frequency, the signal level, an optional spectrum view and the user interface. Below the display are 6 soft keys.

Click to see more

The desired frequency can be entered on the keypad at the right, and can be fine-tuned with the main dial at the top right. To the left of the main dial are the volume control and an adjustment for three functions: manual gain control (MGC), squelch level (SQU) and tone mode (TONE). In tone mode, the speaker produces a tone of which the pitch depends on the signal strength.

At the top left is an N-type socket for connection of the antenna. To its right are +/- buttons for selection of the desired band width (3 - 150 kHz) and modulation type (FM, AM, CW, USB, LSB, Pulse or I/Q). There are several display modes, with a frequency display, an RF field strength indicator, a discriminator meter (channel offset) and (optionally) a spectrum display, all with adjustable averaging. The frequency is set with a 1 Hz accuracy. Furthermore there are various frequency, channel and (optionally) digital scanning features, all with a programmable lockout.

IF Panorama
One option that is really worthwhile having, is the IF Panorama. It is an internally fitted hardware upgrade that performs a digital analysis of the IF spectrum by means of Fast Fourier Transform functions (FFT) using a Digital Signal Processor (DSP). It has a maximum span of 1 MHz with an adjustable integration time in the range from less than one millisecond to several minutes, based on minimum, maximum or average of the intercepted signals. This way, even the shortest and weakest burst transmissions – or frequency hopping signals – can be captured and intercepted.

Real-time FFT analysis of the frequency spectrum around 434 MHz

The image above shows a 1 MHz section of the frequency spectrum around 434 MHz, close to the ISM band 1 in the Netherlands. Within a few seconds, several short burst signals are captured, most likely from local door openers or private wireless weather stations. The 'ghost' signal in the background is from the remote control on our own camera, which operates in the same band.

  1. ISM = Industrial, Scientific and Medical. In this case it refers to the ISM band at 433.920 MHz (433.050 - 434.790 MHz) which is used in Europe (mainly) for things like door openers and remote control units.

Digital scan
Another very useful expansion is the DIGITAL SCAN option, or D-SCAN. It is a soft-option, which means that it does not require additional hardware to be installed. When present, D-SCAN allows any part of the spectrum to be scanned continuously (rather than FFT) in various display modes.

Digital scan of the frequency spectrum from 85 to 110 MHz

This option is most useful when monitoring a specific frequency band or segment, such as the broadcast FM band from 85 to 110 MHz, as shown in the image above. In this mode, no signals can be demodulated as the radio is constantly being re-tuned. As soon as scanning is stopped (by pressing STOP) or the ESC button is pressed, the signal at the cursor will be demodulated.

Demodulated FM broadcast signal at 94 MHz

When ESC is pressed, the receiver returns to the last selected display mode, and demodulation is resumed. The image above shows the same signal - at 94,000 MHz – from the previous example, in the digital IF Panorama mode, with a span of 1 MHz. It now shows the spectrum in real-time.

  • EB-110
    EB-200 without control panel (remote controlled)
  • EB-150
    EB-200 without remote control capability
  • EB-200
    Complete radio with control panel and remote control capability
Remote control
All features of the radio can be controlled remotely via one of the (optional) interfaces. The following interfaces are available:

  • RS-232
    By default, an RS-232 interface is installed in the EB-200. This allows the radio to be controlled via one of two protocols: (1) a simple text-based command string, or (2) TCP/IP over PPP, using the SCPI control protocol. When this interface is installed, a DB-9 socket marked X9 should be available at the rear. A null-modem cable is required for connection to a PC. Suitable software examples are supplied with the receiver.

  • LAN interface
    With the (optional) LAN interface, communication is possible via 10-Base-T Ethernet, using TCP/IP and the SCPI control protocol. This interface is approx. 100 times faster than the RS-232 interface and allows real-time transfer of the IF spectrum. When this option is installed, an RJ45 socket marked X91 should be available at the rear, and the RS232 interface is omitted. The receiver can also be controlled via an internet browser.

Plastic storage suitcase
Main EB-200 receiver
Power supply unit (PSU)
Optional battery pack
Telescopic antenna
Latest firmware and supporting software
Quick reference guide (pocket manual)
A strong plastic storage case was available as a option. It allows the EB-200 receiver with battery pack and most of the available accessories to be packed safely, for transport or storage.

The bottom half holds the receiver, the PSU, the telescopic antenna and additional cables, whilst the battery pack(s), the manual and the adapter plugs are stored in the upper half.
Transport and storage case

The actual receiver measures 270 x 210 x 88 mm and can be stowed in the (optional) suitcase (see above). When the battery pack is used, the hight of the receiver is increased with the height of the battery pack and its fittings. As a result, the foam in the suitcase may have to be adapted.

A standard EB-200 can be expanded with a LAN interface, an IF panorama, and several soft-options, but these do not affect its size.

Power supply unit
Due to space constraints, the EB-200 does not have internal batteries. For desktop operation (or rackmount application), it should be powered by an external DC source between 11 and 30V DC, typically from by the original Deutronic mains power supply unit (PSU) that delivers 24V DC.

This PSU can also be used for charging the (optional) battery pack (see below), both separately and whilst connected to the radio.
Mains PSU

Battery pack
For portable use, the EB-200 can be expanded with an external (optional) battery pack that is fitted at the bottom. It connects to the radio via connector X10 at the rear. The battery pack contains two independent batteries, each of which is monitored (and charged) separately.

The batteries can be charged 1 by a DV voltage between 22 and 26V, typically provided by the external PSU (see above). This can be done in-situ (whilst connected to the radio) or separately by using the power socket on the battery pack.
Battery pack

  1. Note that a deeply discharged (over-discharged) battery pack can only be charged externally.

Although it is advised to use the EB-200 with an external antenna, or with the special close-range HE-200 antenna set, a telescopic antenna is supplied for simple monitoring jobs. It can be connected directly at the front panel.

As the original telescopic antenna is missing from our EB-200, we are showing an alternative one here. When the radio is used in horizontal position, a 90° N-type adapter is required.
Telescopic antenna (alternative)

By default, the audio output of the receiver is delivered to the internal speaker, located at the right side of the device. When the supplied pair of headphones – shown in the image on the right – is connected to the 3 mm jack at the front panel, the internal speaker is disconnected.   

Depending on the version, a CD with additional software and the latest firmware for the receiver was supplied. The disc also contains utilities for updating the EB-200 from a PC and example code for using the remote control facilities.

The last update is from 2006.
CD with latest firmware and supporting software

The receiver comes with a small Pocket Guide, in which the most frequently used features are explained. It is printed on thick paper [B].

For a more detailed description of the many features of this receiver, a full operator's manual is provided in digital format on CD.

 Download Pocket Guide
 Download full manual
Pocket Guide

Directional antenna   HE-200
Especially for locating transmitters at very close range – for example when searching for covert listening devices (bugs) in a room – the special HE-200 antenna set was available. It consists of a pistol grip with a built-in RF pre-amplifier and one or more plug-in antennas.

The set is similar to the earlier HE-100 – that was supplied available for the EB-100 receiver – but covers 20 MHz to 3 GHz (rather than 1 GHz). The image on the right shows the HE-300, which is the successor of the HE-200 and covers a frequency range from 9 kHz to 7.5 GHz.

 More about the HE-100
 More about the HE-300

HE-300 with 200-500 MHz antenna installed

Case, seen from the front
Opened transit case
Upper half of the transit case
EB-200 stowed in the lower half of the transit case
Battery pack
Battery pack
Battery check indicator
CDs with software and documentation
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Case, seen from the front
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Opened transit case
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Upper half of the transit case
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EB-200 stowed in the lower half of the transit case
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Battery pack
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Battery pack
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Battery check indicator
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CDs with software and documentation

Block diagram
The EB-200 is an extremely complex device with many interacting circuits and sub-circuits. To explain its operation, we will use the simplified block diagram below. Central to the system is the backplane with holds the parallel host (data) bus, an I2C bus, a serial (data) bus, a junction bus and an audio bus. The backplane is represented by the thick blue line in the diagram below. All signal processing is above the backplane, starting with the RF pre-selection stage at the top left.

Next is the RF-stage, which consists of two cascaded front-ends. The RF stage delivers the 10.7 MHz IFWB signal for an external panorama viewer, and for the digital IF stage. The IF stage further processes the data and delivers the AF (audio) signal. It can be enhanced with an IF panorama unit (shown at the top right) which can be further expanded with a Digital Signal Processor (DSP).

EB-200 simplified block diagram

Below the backplane is (from left to right) the front panel control unit (UI) — it takes the input from the front panel and drives the LCD — the Central Processing Unit (CPU), the internal power supply (DC/DC) and the junction panel at the rear (I/O). At the bottom right are the remote control interfaces, which are mutually exclusive. The radio either has RS232 or Ethernet I/O.

Connections at the rear panel

  • X1
    DC power 11—30V
  • X2
    DC power 11—30V
  • X4
    External reference (10 MHz)
  • X5
    IF WB out (10.7 MHz)
  • X6
  • X7
  • X8
  • X9
    Serial RS-232 port 2
  • X10
    Battery pack
  • X12
    Line out (stereo)
  • X13
    Antenna input for rackmount 1
  • X91
    LAN interface (10 Base-T Ethernet) 2
  1. Selected internally.
  2. X9 and X91 are options and are mutually exclusive.

X6   Option
  1. GND
  2. J TXD
  3. J RXD
  4. J RTS
  5. J CTS
  6. J DSR
  7. GND
  8. not connected
  9. A RX
  10. not connected
  11. not connected
  12. S FRAME
  13. GND
  14. (+)5V
  15. not connected
  16. not connected
  17. not connected
  18. not connected
  19. not connected
  20. J DTR
  21. not connected
  22. not connected
  23. A TX
  24. S CLK
  25. S DATA
X7   Audio
  1. Speaker EXT1
  2. AF GND
  3. AF SYM1
  4. not connected
  5. LOG
  7. FSK
  8. (+)5V
  9. Speaker EXT2
  10. AF MONO
  11. AF SYM2
  12. not connected
  13. JO1
  14. JO2
X10   Battery pack
  1. DC Accu
  2. DC Accu
  3. GND
  4. GND
  5. DC Charge
  6. not connected
  7. SCLB
  8. /PWR_OFF
  9. DC Accu
  10. DC Accu
  11. GND
  12. GND
  13. DC Charge
  14. SDAB
  15. /PWR_ON
  • Frequency
    10 kHz — 3 GHz
  • Dynamic range
    -10 to +110 dBµV
  • Modulation
    AM, FM, USB, LSB, CW, Pulse, I/Q
  • Bandwidth
    150 kHz to 120 kHz (10 steps) (15 with IF Spectrum option)
  • IF output
    10.7 MHz ± 5 MHz
  • Digital outputs
    AF, I/Q
  • Remote control
    RS232, IEC625 or LAN 1
  • Display
    Monochrome graphics, 240 x 64 pixels (with backlight)
  • Dimensions
    270 x 210 x 88 mm
  • Weight
    4 kg (5.5 kg with battery pack)
  1. Available as an option.

  • 4052.4102.02
    Battery Pack
  • 4052.3206.02
    IF Panorama
  • 4052.9604.02
    RF Spectrum DIGI-Scan
  • 4052.9704.02
    Field-Strength Measurement Software
  • 4052.9804.02
    Coverage Measurement Software
  • 4052.9156.02
    LAN Interface
  • 4052.9056.02
    Serial Interface (RS-232-C)
LAN software compatibility
  • SCPI
  1. EB-200 Datasheet (English)
    Rohde & Schwarz, Version 04.00, November 2006.

  2. EB-200 Pocket Guide (English)
    Rohde & Schwarz, February 2003.

  3. EB-200 Manual (English)
    Rohde & Schwarz, Date unknown. 4052.2000.02.

  4. EB-200 Manual Annex A—K (English)
    Rohde & Schwarz, Date unknown. 4052.2000.02.
  1. Radiolocation from 10 kHz to 3 GHz now with portable equipment
    News from Rohde & Schwarz, Number 156, 1997/IV, pp. 4-6.

  2. Portable, mobile or stationary radiomonitoring...
    News from Rohde & Schwarz, Number 161, 1999/I, pp. 25-26.

  3. Hard times for eavesdroppers
    News from Rohde & Schwarz, Number 164, 1999/IV, pp. 24-25.

  4. Mini-Receivers: remote control lends weight to network role
    News from Rohde & Schwarz, Number 165, 1999/V, pp. 16-17.

  5. Coverage and field-strength measurements with the mini-receiver
    News from Rohde & Schwarz, Number 170, 2001/I, pp. 12-14.

  6. IF panorama option - nothing hidden in the spectrum
    News from Rohde & Schwarz, Number 171, 2001/II, pp. 48-50.
Further information
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Crypto Museum. Created: Wednesday 26 September 2018. Last changed: Sunday, 05 June 2022 - 10:26 CET.
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