|
|
|
|
|
|
Portable surveillance receiver
The EB-100 is a small portable surveillance receiver build in the 1980s by
Rohde & Schwarz in Munich (Germany).
It was intended for a variety of jobs, including frequency monitoring,
radio surveillance, radio intercept, EMC measurements and direction finding.
Due to its small size and wide frequency range, it is extremely useful for
bug tracing. EB-100 is also known as MINIPORT.
|
The EB-100 covers al frequencies between 20 MHz and 1000 MHz (1 GHz)
and can store approx. 30 frequencies in its built-in memory (also used
for scanning). The IF bandwidth is selectable between 7.5, 15 and 150 kHz.
All controls, with the exception of the frequency adjustment, are on the
front panel.
Frequencies can be entered directly on the 15-button key pad
at the right, and are visible on the small LCD display at the center.
An old-fashined analog meter, mounted to the left of the display, is used as
signal strength indicator and as battery test.
|
|
|
The receiver has a carrying strap and a built-in rechargeable battery,
allowing portable use (i.e. carried around the neck),
and is usually stored in a briefcase together with the battery charger,
headphones and other accessories.
It can by used for monitoring the programmed memory channels by using the
(rather slow) scanning feature. For bug-tracing and EMC measurements,
the EB-100 is often used in combination with the
HE-100 directional antennas (see below).
The EB-100 was introduced by Rohde & Schwarz in the 1980s and for
a long time, it was the de-facto standard in many countries. For this reason
it was available with a German or English front panel. The receiver
was replaced in the late 1990s
by the much improved EB-200
and more recently by the feature-packed EB-500.
For portable use, Rohde & Schwarz has developed the advanced
PR-100 digital receiver.
Today, the EB-100 is still a highly wanted EMC test receiver.
|
|
|
|
|
|
|
All controls of the EB-100, except for the tuning knob, are located at
the clear well-designed front panel.
At the center is the frequency display
with an analogue field-strength meter to its left and a 15-button keypad
to its right. An antenna is connected to the BNC socket at the top left.
The EB-100 is suitable for the reception of AM and FM signals with an
adjustable IF bandwidth. A 40dB attenuator can be used in close proximity
of a transmitter (e.g. a bug). The squelch is adjustable and the user
can toggle between the modulated signal, or a signal level tone of
varying height. The frequency is selected with a
large rotary dial
at the right side of the receiver (tuning).
|
The following accessories were available for the EB-100:
|
-
Optional (separate items)
|
|
|
HE-100 Directional Antenna
|
 |
|
|
Although the EB-100 can be used with virtually any indoor or outdoor
antenna, a special set of active antennas was developed by
R&S,
that made the EB-100 particularly useful for finding clandestine
transmitters and for indoor bug tracing.
This antenna set is known as the HE-100.
|
The HE-100 set consists of three pluggable antenna's and a pre-amplifier
in the shape of a pistol grip, with a field-strength meter at the back.
Depending on the required frequency range,
one of the three antennas is attached to the front of the pre-amplifier,
and is enabled by pressing the trigger-button on the pistol grip.
 More information
|
|
|
|
The EB-100 can also be used in combination with the complementary EBZ-100
panorama display to allow part of the frequency spectrum to be monitored in
real-time (around a given center frequency).
The EBZ-100 is fed by the 10.7 MHz IF-signal from the EB-100 receiver and
displays a frequency span of 200 kHz (i.e. the center frequency ± 100 kHz)
on its small built-in green Cathod Ray Tube (CRT).The display unit was
sometimes mounted together with the EB-100 in an optional
leather carrying case.
|
|
|
|
The HE-100 antenna is sometimes also used in combination with an R&S
portable spectrum analyzer such as the
FSH-3 shown here.
The advantage of using an external spectrum analyzer is that it shows
a wider part of the frequency spectrum than the EBZ-100 panorama display.
Once a signal is discovered, the EB-100 is tuned to the desired frequency
so that the signal can be intercepted.
More information
|
|
|
|
|
|
|
Any links shown in red are currently unavailable.
If you like this website, why not make a donation?
© Copyright 2009-2013, Paul Reuvers & Marc Simons. Last changed: Tuesday, 15 April 2014 - 13:11 CET
|
 |
|
|
