Robot mode
Robot Color 36
Robot Color 36 is the catalog form of Robot 36, the highly compatible 36 s mode often used for public ISS SSTV.
Reference onlyMode sample
BBC-style colour test card and app-generated audio
The image is generated locally for this mode's raster. For supported modes, the audio sample is encoded from that image with the SSTV Signal Desk transmitter code, then published as lossless FLAC for static playback.
No app-generated audio sample is published for this reference-only mode because no matching transmitter entry exists in the app code.
Mode spec
| Short name | C36 |
|---|---|
| Support status | Reference only |
| Spec status | Reference timing row from the OK2MNM SSTV mode-list PDF. |
| Duration | 36 s |
| Frame | 320 x 240 |
| Data lines | 240 |
| Public VIS | VIS 8 |
| Standard VIS code | 0x08 (8) |
| Extended/N-VIS | No |
| Color model | YCrCb |
| Component sequence | Y-RY-BY |
| Line rate | 400 lpm |
| Public timing profile | Mode-list row gives 36 s total duration, 240 scan lines, 320 columns, and 400 lpm; line-level porch timing is not part of this catalog row. |
Strengths
- C36 has a concrete catalogue row: 36 s, 320 x 240, YCrCb, VIS 8.
- C36's Y-RY-BY component order and 400 lpm line rate make it useful for comparing airtime, raster, and colour structure against related modes.
Tradeoffs
- C36 is not app-supported yet, so the 36 s / 320 x 240 row should be treated as reference data rather than a verified transmit preset.
- C36 still needs implementation-grade porch, sync, and pixel timing before an app-generated WAV/FLAC sample can be published with the same confidence as supported modes.
Source notes
OK2MNM SSTV Handbook chapter 5 lists C36 as YCrCb, VIS 8, 36 s, 240 lines, 320 columns, 400 lpm. Robot 36 family definition in public mode catalogs.
- SSTV Handbook Chapter 5: List of SSTV modesSSTV Handbook - accessed 2026-08-24Reference for analog SSTV mode names, VIS codes, durations, line counts, column counts, and line rates.