How to use it Specify the bitmap and output file name, set other parameters, and click on the Generate button. Compare different receiving programs quantitatively. Test your SSTV receiving software and see how tolerant it is to the noise, soundcard calibraion errors, receiver frequency offset, etc. The software can generate either a clean signal suitable for transmission, or a signal contaminated with noise, suffering from QSB, etc. Multiple SSTV formats and sampling rates are supported.