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Receivers
Intercept receivers

This section deals with receivers that have been used (or are being used) to intercept and monitor radio traffic. Please note that there are overlaps with other sections, as some of these receivers are also used for radio direction finding, or for finding the nature and source of an interference.
 
Intercept receivers on this website
National HRO receivers
HRO
RCA AR-88 receiver Hallicrafters SX-28 Super Skyrider receiver Siemens R-II (R2) Abwehr receiver Siemens R-IV (R4) Abwehr receiver CIA VHF intercept receiver SRR-4 SRR-8 surveillance receiver 30-1000 MHz (1963) Pristroj UHF 465 MHz intercept receiver, used for monitoring French counter-espionage
2170 Intercept Receiver as used by the Stasi in the former DDR Minilock 6900 Programmable Precision Measurement Receiver Minilock 6910 Programmable Precision Measurement Receiver Rohde & Schwarz EB-100 portable surveillance receiver Czechoslovakian VHF or UHF bug receiver General coverage panoramic intercept receiver Dutch intercept receiver for 1st generation car phones

 
National HRO
The National HRO was a valve-based (tube) shortwave general coverage communications receiver, manufactured by the National Radio Company (National) in Malden (Massachusetts, USA) from 1935 onwards.

The receiver was intended for military and amateur use and became very popular for intercept work during WWII. Different versions of the radio were in production until the 1950s.

 More information
  
National HRO-5

 
RCA AR-88
The AR-88 was a valve-based shortwave general coverage communications receiver, developed and built by the Radio Corporation of America (RCA) in the early 1940s.

Although the receiver was initially intended as the successor to the AR-77 amateur receiver, the outbreak of WWII made it evolve into a professional high-end military-grade intercept receiver for which cost was no object.



 More information
  
RCA AR-88 receiver

 
Hallicrafters SX-28
The SX-28 and the later SX-28A were AM/CW communication receivers, developed and built by Hallicrafters Inc. in Chicago (USA) in 1940, a few years before the US got involved in WWII.

It is one of the most popular receivers every built by Hallicrafters, and was used heavily for intercept work during the war. The receiver is also known as Super Skyrider.

 More information
  
Hallicrafters SX-28A

 
SRR-4
This valve-based surveillance receiver was developed by the CIA in 1958 and covers 50 - 200 MHz. It was used for monitoring and for the reception of covert listening devices (bugs).

The receiver is based on the military R-744, which as a similar front panel.

 More information
  
Telescopic antenna mounted on the SRR-4

 
SRR-8
The SRR-8 was a countermeasures receiver, developed by the CIA between 1961 and 1963. It covers 30-1000 MHz in FM/AM and PM, and was suitable for stationary as well as mobile use.

 More information
  
XRR-8 (SRR-8) CIA surveillance receiver

 
Kolibrie
Kolibrie (hummingbird) was an intercept receiver for car phones (cell phones) developed by the Police Signals Service in The Netherlands in the early 1990s. It was intended for intercepting criminal conversations on the analogue ATF-3 (NMT-900) car phone networks.

 More information
  
Front panel of the Kolibrie, with the unique ID plug

 
Minilock
In the 1980s and 1990s, Schlumberger GmbH developed a series of high performance digital programmable precision receivers, under the name Minilock. The receivers were used by many agencies for intercepting, measuring and fingerprinting radio signals.

 More information
  
Operating the Minilock 6900 Control Unit

 
EB-100
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.

 More information
  
EB-100 at the desktop

 
Bodrog
Bodrog was a series of wideband VHF and UHF receivers, developed and built in Czechoslovakia, especially for the reception of FM radio bugs.

The version shown here is the A-variant that was used for the VHF-H band. It was supplied with a mains PSU and a removable battery pack.

 More information
  
Bodrog bug receiver

 
2170 Stasi Receiver
During the days of the Cold War, the secret service of the former DDR (East Germany), also known as the Stasi, used this receiver to monitor domestic and foreign radio traffic.

 More information
  
Controls of the 2170 Stasi Receiver

 
Further information

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© Crypto Museum. Created: Saturday 24 December 2016. Last changed: Thursday, 09 March 2017 - 15:20 CET.
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