title: Complete SSTV Guide description: Learn the basics and how SSTV works

Complete SSTV Guide

What is SSTV?

SSTV (Slow Scan Television) is a communication mode for transmitting static images via amateur radio frequencies. Unlike regular television, SSTV transmits at a slower rate, allowing long-distance communication with simple equipment.

History of SSTV

SSTV technology began in the 1950s, developed by amateur radio enthusiasts. It became popular for its ability to transmit images over long distances using HF bands, especially for international communication.

How SSTV Works

  1. Image Conversion - The static image is converted into an audio signal
  2. Modulation - The audio signal is modulated onto an RF carrier
  3. Transmission - Sent over radio frequencies
  4. Reception - The receiver captures the signal
  5. Decoding - The audio is converted back into an image

Applications of SSTV

Common SSTV Modes

Mode Resolution Time Bandwidth
M1 320×240 110s 2.5kHz
M2 320×240 145s 2.5kHz
S1 320×240 110s 3.5kHz
S2 320×240 145s 3.5kHz
P3 640×480 234s 3.5kHz

Getting Started with SSTV

To participate in SSTV communication, you need:

  1. Radio Equipment - Amateur radio transceiver
  2. Decoding Software - Such as SSTV apps
  3. Antenna - Suitable for the frequency
  4. Sound Card Interface - Connects radio to computer or mobile device

📚 Complete Documentation List

Fundamentals

Advanced Techniques

Software & Processing

Practical Reference

Legal & Community