SSTV Decoder

General description

The SkySweeper SSTV decoder uses the most modern digital PLL synchronization technology. The received image can be saved with ‘Save’. ‘Reset’ resets the decoder and ‘Config’ is used to select SSTV modes. The decoder supports the most commonly used SSTV modes in Europe and US: Martin 1, Martin 2, Scottie 1 and Scottie 2.

 

Configuration

Pressing the Config button opens the following configuration dialog.

 

 

Parameters

SSTV modes

The switch selects the SSTV mode. Technical specifications of modes are shown in the table below.

 

 

Mode	Designator	Color Type	Scan time (sec)	Scan lines
Martin1	M1	RGB	114	240
Martin2	M2	RGB	58	240
Scottie1	S1	RGB	110	240
Scottie2	S2	RGB	71	240
ScottieDX	DX	RGB	269	240

Scroll

If the scroll checkbox is selected, a picture is scrolled from bottom to up. Otherwise drawing is started at the top and re-started at the top, when the picture area is full.

 

Post Processing Functions

Post processing functions can be used to correct properties of the picture after receiving. The post processing functions are not enabled during receiving.

 

Start

If the picture is shifted in horizontally, the start slider can be used to set the left margin in the correct place.

 

Sampling

If the picture is slanted, the sampling slider is used to correct the slanting.

 

Save

The save button saves received picture into file as bitmap format.

 

Reset

The reset button resets the decoder and clears the window.