Signal Processor

The ultimate browser-based modem for Robot 36 SSTV transmission.
Encode images to audio. Decode audio to images.

Start Encoding Start Decoding

📡 TX: TRANSMITTER

Convert digital photos into analog audio waves suitable for radio transmission.

  • ✓ Robot 36 Mode (36s Color)
  • ✓ Precision Oscillator (No Drift)
  • ✓ Instant WAV Download

📠 RX: RECEIVER

Listen to incoming SSTV signals via microphone and reconstruct the image line-by-line.

  • ✓ Live Microphone Analysis
  • ✓ Rainbow Spectrum Visualizer
  • ✓ Noise Filtration

FREQUENTLY ASKED QUESTIONS

What is SSTV?

Slow Scan Television (SSTV) is a picture transmission method used mainly by amateur radio operators to transmit and receive static pictures via radio in monochrome or color.

Why Robot 36?

Robot 36 is one of the most popular and robust modes. It transmits a 320x240 color image in exactly 36 seconds, offering a great balance between speed and quality.

Is it secure?

Yes. All processing happens locally in your browser using WebAssembly and Web Audio API. Your images are never uploaded to a server.