A community-driven resource for amateur radio enthusiasts

Digital Modes Guide

Comprehensive guide to digital communication modes in amateur radio

By MicroHAMS Team

Digital modes have become increasingly popular in amateur radio, offering efficient communication even under poor propagation conditions.

FT8

FT8 is a weak-signal mode designed for minimal signal-to-noise ratios. It’s become the most popular digital mode for DX contacts.

  • Transmission length: 15 seconds
  • Bandwidth: 50 Hz
  • Minimum SNR: -20 dB

PSK31

Phase Shift Keying is ideal for keyboard-to-keyboard conversations.

  • Bandwidth: 31.25 Hz
  • Speed: ~50 words per minute
  • Best for: Real-time QSOs

Getting Started

To begin with digital modes, you’ll need:

  1. An HF transceiver
  2. A computer with sound card
  3. Interface cable (USB or traditional)
  4. Software (WSJT-X for FT8, Fldigi for PSK31)

Best Practices

  • Always identify your station properly
  • Monitor before transmitting
  • Use appropriate power levels
  • Follow band plans for digital operation

For hardware recommendations, see our projects section.