CW Skimmer is a highly sensitive, multi-channel Morse code (CW) decoder and analyzer program developed by Alex Shovkoplyas (VE3NEA) of Afreet Software, Inc.. Unlike traditional software decoders that only process one single frequency at a time, CW Skimmer monitors a wide swath of radio spectrum simultaneously. It decodes all Morse code signals across that entire band in parallel, automatically extracting callsigns and identifying active stations. Core Features
Bayesian Demodulation: It utilizes advanced statistical algorithms based on Bayesian statistics to pull extremely weak or noisy signals out of the static, performing far better than standard text-matching algorithms.
Parallel Processing: When paired with a Software Defined Radio (SDR), it can decode hundreds of unique CW signals simultaneously across up to 192 kHz of bandwidth.
Visual Waterfall: Features a fast, high-resolution waterfall display that spaces out dots and dashes visually, drawing the identified callsign directly alongside the corresponding signal trace.
Built-in DX Cluster Server: Extracted callsigns are instantly broadcasted as local DX spots using an integrated Telnet server, which feeds directly into amateur radio logging software.
Signal Conditioning: Contains its own internal DSP processor equipped with an automatic gain control (AGC), noise blanker, and highly adjustable audio filters. How It Is Used
The program is a staple for contesting, DXing, and automated monitoring:
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