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Wraase mode

Wraase SC-1 B/W 8

Wraase SC1 B/W 8 is an 8 s monochrome SC1 row with component-specific VIS entries for red, green, and blue component use.

Reference only

Mode 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.

SC1-BW8 SSTV BBC-style colour test card
SC1-BW8 test card, 128 x 120

Mode spec

Short nameSC1-BW8
Support statusReference only
Spec statusReference timing row from the OK2MNM SSTV mode-list PDF.
Duration8 s
Frame128 x 120
Data lines120
Public VISVIS 17, 18, 19
Standard VIS code0x11, 0x12, 0x13 (17, 18, 19)
Extended/N-VISNo
Color modelBW
Component sequenceY
Line rate1000 lpm
Public timing profileMode-list row gives 8 s total duration, 120 scan lines, 128 columns, and 1000 lpm; line-level porch timing is not part of this catalog row.

Strengths

  • SC1-BW8 has a concrete catalogue row: 8 s, 128 x 120, BW, VIS 17, 18, 19.
  • SC1-BW8's Y component order and 1000 lpm line rate make it useful for comparing airtime, raster, and colour structure against related modes.

Tradeoffs

  • SC1-BW8 is not app-supported yet, so the 8 s / 128 x 120 row should be treated as reference data rather than a verified transmit preset.
  • SC1-BW8 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 SC1-BW8 as BW, VIS 17, 18, 19, 8 s, 120 lines, 128 columns, 1000 lpm. OK2MNM lists this under Wraase SC1, not under Vester Color FAX.