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FLDIGI Soundcard Calibration Guide: Set Up WWV Mode Easily

Learn how to calibrate your soundcard for FLDIGI with George Blakeslee N1GB's launch guide. Follow steps to adjust Rx corr. rate and configure audio and settings for best sync. Tune in to WWV/WWVH 2.5, 5.0, 10.0, or 15.0 MHz and observe line slope for adjustments.

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FLDIGI Soundcard Calibration Guide: Set Up WWV Mode Easily

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  1. FLDIGI Soundcard Calibration Wwv mode George Blakeslee N1GB

  2. Launch FLdigi

  3. Select the WWV modem - Op Mode > WWV

  4. Select the Digiscope - View > Floating Scope

  5. Open Configure > Audio

  6. Choose Devices tab Check Port Audio Select Input & Output soundcards drop down menu

  7. Choose Settings tab Set Sample Rate: Input & Output to Native Set Converter: Best Sync interpolator Will be adjusting the "Rx corr Rate" while observing the slope of the time tick line.

  8. Tune in WWV or WWVH2.5, 5.0, 10.0 or 15.0 MHz

  9. Observe slope of line NEGATIVE POSITIVE

  10. If positive - ADD NEGATIVE value in RX ppm

  11. If negative - ADD POSITIVE value in RX ppm

  12. Repeat until Time Tick is vertical along guide line

  13. Left-click on Time Tick line in Digiscope to center it

  14. Right-click in Digiscope window to zoom 5X

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