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Automatic scanning receivers
- under construction
Scanning receivers, or simply scanners, are automatic
electronically controlled receivers that can be used to search a predetermined
set of frequencies (generally identified as channels) or a
predetermined frequency interval (band) for active radio signals.
When a signal is detected, scanning is interrupted and the demodulated audio
is passed to the speaker.
Scanners were very popular between the 1970s and the early 2000s
for interception of the radio traffic of the local police
and other services, which is why they are often called police scanners.
Many were (are) commercially available from a variety of brands, such as
Bearcat (Uniden), Cuna, Handic, Realistic, Yupiteru, Icom and others.
But there were also scanners that were especially built for a specific
purpose. Note that the possession and/or use of a scanner is subject to law.
Strickly speaking, scanners do not belong on this website, but as some of them
have been used for lawful interception of (illegal) radio trafic and in some
cases even for radio direction finding,
they are listed in this section.
The list is far from complete but may be expanded in due course.
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- Alinco
- AOR
- Atron
- Bauer
- Bearcat
- Bobcat
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- Cuna
- Handic
- Icom
- JIL
- Jomaco
- Midland
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- Puma
- Realistic
- Regency
- SBE Optiscan
- Scooper
- Sony
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- Uniden (Bearcat)
- Yaesu
- Yupitery
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One of the first digital programmable scanners,
was the 0016 of the Swedish company Handic. It was suitable for the VHF-L,
VHF-H and UHF bands and had 16 memory positions. It was also capable of
scanning a frequency interval.
The 0016 was not only used by scanner freaks, but also by
law enforcement agencies like the
Dutch Radio Monitoring Service (RCD).
➤ More information
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The American company OAR built a wide range of radio direction finders
that were intended as a navigational aid aboard ships. Special versions,
the so-called 9xx-range, were made for locating clandestine radio stations
(pirates).
The image on the right shows the ADF-940 which has a built-in 40-channel
scanner for the 27 MHz citizens band (CB).
➤ More information
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Kolibrie (hummingbird) was a car phone intercept receiver
developed by the Police Signals Service in The Netherlands
in the early 1990s. It was intended for intercepting
criminal conversations on the early analogue car phone networks.
➤ More information
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© Crypto Museum. Created: Saturday 24 December 2016. Last changed: Tuesday, 17 August 2021 - 06:28 CET.
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