Spectrum Painter

The Spectrum Painter app allows to "paint" an image or text in a way that it appears on the waterfall view.

Options

• Center frequency
• VGA (Gain)
• Amplifier
• Loop
• Bandwidth
  • Note that the default bandwidth of 8k5 Hz is too low in most cases (eg. when viewing multiple MHz).
• Duration of transmission
• Pause between transmissions when loop is active

Images

• Place 24 bit .BMP files on the sd card in the folder SPECTRUM
  • 16 and 32 bit .BMP should work as well, but are not testet.
• The resolution should be quite high for a good result. A width of 2048 pixels is not a problem.
  • Use a power of 2 for the width for optimal result. (eg. 512 / 1024 / 2048 / ...)

Text

• Messages up to 300 characters are supported