CW Skimmer is a multi-channel Morse code ( 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 assign ...

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

waterfall A waterfall is a point in a river or stream where water flows over a vertical drop or a series of steep drops. Waterfalls also occur where meltwater drops over the edge of a tabular iceberg or ice shelf. Waterfalls can be formed in severa ...

. CW Skimmer also includes a

DSP DSP may refer to: Computing * Digital signal processing, the mathematical manipulation of an information signal * Digital signal processor, a microprocessor designed for digital signal processing * Yamaha DSP-1, a proprietary digital signal ...

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, 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 contr ...

clients, presenting an interface similar to those of

DX cluster A DX cluster is a network of computers, each running a software package dedicated to gathering, and disseminating, information on amateur radio DX (long-distance contact) activities. The computers comprising the network are called nodes, the ne ...

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