Robot mode
Robot B/W 24
Robot B/W 24 is a monochrome Robot row with component-specific VIS entries listed for red, green, and blue component use.
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 | BW24 |
|---|---|
| Support status | Reference only |
| Spec status | Reference timing row from the OK2MNM SSTV mode-list PDF. |
| Duration | 24 s |
| Frame | 240 x 320 |
| Data lines | 320 |
| Public VIS | VIS 9, 10, 11 |
| Standard VIS code | 0x09, 0x0A, 0x0B (9, 10, 11) |
| Extended/N-VIS | No |
| Color model | BW |
| Component sequence | Y |
| Line rate | 300 lpm |
| Public timing profile | Mode-list row gives 24 s total duration, 320 scan lines, 240 columns, and 300 lpm; line-level porch timing is not part of this catalog row. |
Strengths
- BW24 has a concrete catalogue row: 24 s, 240 x 320, BW, VIS 9, 10, 11.
- BW24's Y component order and 300 lpm line rate make it useful for comparing airtime, raster, and colour structure against related modes.
Tradeoffs
- BW24 is not app-supported yet, so the 24 s / 240 x 320 row should be treated as reference data rather than a verified transmit preset.
- BW24 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 BW24 as BW, VIS 9, 10, 11, 24 s, 320 lines, 240 columns, 300 lpm. Robot monochrome 24-second variant.
- 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.