Mode family

Martin SSTV modes

This family page groups modes by shared timing style and operating role.2 rows are implemented by SSTV Signal Desk; reference rows document public analog SSTV history and compatibility.

Mode	Family	Status	Duration	Frame	VIS	Color	Sequence	Notes
HQ1	Martin	Reference only	90 s	320 x 256	VIS 41	YCrCb	Y-RY-BY	Martin HQ1 is a high-quality Martin-family reference mode using color-difference coding rather than the classic Martin RGB line order.
HQ2	Martin	Reference only	112 s	320 x 256	VIS 42	YCrCb	Y-RY-BY	Martin HQ2 is a longer high-quality Martin-family reference mode with the same 320 x 256 raster as HQ1.
HQ3	Martin	Needs verification	63 s	320 x 144	VIS unknown in OK2MNM table	YCrCb	Y-RY-BY	Martin HQ3 is listed as a 63 s, 320 x 144 YCrCb high-quality Martin-family mode, but the checked table does not publish its VIS code.
HQ4	Martin	Needs verification	51 s	320 x 144	VIS unknown in OK2MNM table	YCrCb	Y-RY-BY	Martin HQ4 is listed as a 51 s, 320 x 144 YCrCb high-quality Martin-family mode, but the checked table does not publish its VIS code.
M1	Martin	Supported in app	114.297 s	320 x 256	VIS 44 (0x2C)	RGB	G-B-R	Classic HF color SSTV and compatibility testing.
M2	Martin	Supported in app	58.064 s	320 x 256	VIS 40 (0x28)	RGB	G-B-R	Martin family analog SSTV operation and compatibility reference.
M3	Martin	Reference only	57 s	320 x 128	VIS 36	RGB	G-B-R	M3 is a reference-only analog SSTV row with 57 s duration, 320 x 128 raster, RGB color model, and VIS 36.
M4	Martin	Reference only	29 s	320 x 128	VIS 32	RGB	G-B-R	M4 is a reference-only analog SSTV row with 29 s duration, 320 x 128 raster, RGB color model, and VIS 32.