Demod: SDR Receiver

Morse code (CW) that actually works: • CW tuning fixed on KiwiSDR and OpenWebRX — tap a CW signal and you now hear it as a clean tone. Before, these receivers were listening slightly beside the signal, so you mostly heard noise. • A much better CW decoder — it finds the signal's exact pitch on its own, so a station you tapped a little off (or one that drifts) still decodes, and it copies weak signals far more reliably. • No more strings of random E's and I's on an empty frequency: the decoder only prints when a signal is there. • The CW filter now follows the bandwidth setting.