CW Skimmer is a multi-channel

Morse code Morse code is a method used in telecommunication to encode text characters as standardized sequences of two different signal durations, called ''dots'' and ''dashes'', or ''dits'' and ''dahs''. Morse code is named after Samuel Morse, one ...

( CW) decoder and analyzer program for Microsoft Windows. It was created by Alex Shovkoplyas, VE3NEA, and is marketed by Afreet Software, Inc. CW Skimmer uses a sensitive CW decoding algorithm based on the methods of

Bayesian statistics Bayesian statistics is a theory in the field of statistics based on the Bayesian interpretation of probability where probability expresses a ''degree of belief'' in an event. The degree of belief may be based on prior knowledge about the event, ...

, which allows simultaneous decoding of all CW signals in the receiver passband. The

call sign In broadcasting and radio communications, a call sign (also known as a call name or call letters—and historically as a call signal—or abbreviated as a call) is a unique identifier for a transmitter station. A call sign can be formally assig ...

s are extracted from the decoded messages and displayed next to the signal traces on the

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. CW Skimmer also includes a DSP processor with a

noise blanker A Citizen's Band transceiver equipped with a noise blanker for the receiver, controlled by a button on the front panel (2nd from right) In the design of radio receivers, a noise blanker is a circuit intended to reduce the effect of certain kinds ...

automatic gain control Automatic gain control (AGC) is a closed-loop feedback regulating circuit in an amplifier or chain of amplifiers, the purpose of which is to maintain a suitable signal amplitude at its output, despite variation of the signal amplitude at the inpu ...

, and variable-bandwidth CW filter. It accepts

TCP/IP The Internet protocol suite, commonly known as TCP/IP, is a framework for organizing the set of communication protocols used in the Internet and similar computer networks according to functional criteria. The foundational protocols in the suit ...

network Network, networking and networked may refer to: Science and technology * Network theory, the study of graphs as a representation of relations between discrete objects * Network science, an academic field that studies complex networks Mathematics ...

connections from

telnet Telnet is an application protocol used on the Internet or local area network to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. User data is interspersed in-band with Telnet cont ...

clients, presenting an interface similar to those of DX cluster programs.

External links

* http://www.dxatlas.com/CwSkimmer/ : Official CW Skimmer web page * http://k9jy.com/blog/2008/03/04/cw-skimmer-a-monster-or-killer-tool/ : CW Skimmer — A Monster or Killer Tool? * http://www.reversebeacon.net/ : Reverse Beacon Network: a network of internet connected CW Skimmers {{Amateur-radio-stub Amateur radio software Amateur radio software for Windows