[Rogal] wrote a cell phone application called ToneTool that generates audio tone sequences. It can be used to output DTMF and SelCall sequences which are used by telephone systems and radio ...

It’s not a matter of trimming away VDC. His circuit is there to be able to add a VDC to the signal, to be able to shift it up or down as desired. The soundcard won’t give you anything that is ...

Rohde & Schwarz upgraded its SMW200A vector signal generator and midrange counterpart, the R&S SMM100A, to significantly ...

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