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DL4YHF's Audio Spectrum Analyser Spectrum Lab or Speclab started as a simple FFT program running under DOS a long time ago, but it is now a specialized audio analyzer, filter, frequency converter, hum filter, data logger and more.
Can be used for MTHELL QRSS, DFCW, PSK, MSK, Castle
 Hellschreiber : Software/Hellschreiber
Hellschreiber software
Spectrum Lab is listed on dxzone.com since 2004-10-06
Hits : 13455 - Rating : 7.40 - Votes : 22
The scale is 1 - 10, with 1 being poor and 10 being excellent.
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