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DIGITAL & DATA MODES

DIGITAL & DATA MODES. Digital / Data Modes. Fldigi WinPack. FSK PSK. Audio IN/OUT. USB. TNC/Sound Card. Digital / Data Modes. 219 to 220 MHz, also others Many different “flavors” “parity bit” extra bit detects errors BER = Bit Error Rate GPS can provide APRS. PSK31.

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DIGITAL & DATA MODES

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  1. DIGITAL & DATA MODES

  2. Digital / Data Modes Fldigi WinPack FSK PSK Audio IN/OUT USB TNC/Sound Card

  3. Digital / Data Modes • 219 to 220 MHz, also others • Many different “flavors” • “parity bit” extra bit detects errors • BER = Bit Error Rate • GPS can provide APRS

  4. PSK31 • Low Data Rate (Keyboard) • continuous whistle with a slight warble Sound files from http://www.kb9ukd.com/digital/

  5. MFSK • Shifts Audio Frequency between a number of different tones • Low data rate 64 bps • Sounds like a crazy bird Sound files from http://www.kb9ukd.com/digital/

  6. Packet • “High” Data Rate • Checksum • Header (Destination Call Sign) • Automatic Repeat if error detected • How it sounds: Sound files from http://www.kb9ukd.com/digital/

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