General description
The HELLSCHREIBER decoder supports both the amplitude modulated (Feld-Hell) and the phase modulated HELL formats (PSK105 & PSK245).
Configuration
Pressing the Config button opens the following configuration dialog.

Parameters
Mode
You can choose whether Feld-Hell, PSK105 Hell or PSK245 Hell will be detected
Carrier Frequency
Carrier Frequency can be set either to 900 Hz or 980 Hz.
Pixel Size
With this value the font size can be adjusted.
Save
The save button saves received picture into file as bitmap format.
Reset
The reset button resets the decoder and clears the window.