Quick start · Send a picture, then decode it
- Choose the test pattern or upload a picture. Add your callsign and select an SSTV mode.
- Download the generated audio, then load it in the receive panel to practise without a radio.
- For live reception, allow microphone access and select your radio audio input. Start before the image header arrives.
If an image does not appear, check the input level and mode. If the recording starts after its header, select the matching mode and try Decode as.
For NARC members with Radio Lab access
The SSTV encoder and decoder is part of the full Radio Lab, available to approved members once an administrator grants access. Morse code learning and practice stay free for everyone.
Six popular modes
Martin M1/M2, Scottie S1/S2, Robot 36, and PD120 — including the mode used for ISS events.
Automatic detection
The VIS header identifies the mode; sync tracking corrects slant from sound-card clock drift.
Live or recorded
Decode from your receiver in real time, or insert a recording from an SDR.
