- A free soundcard application supporting PSK31, PSK63, RTTY, CW, and Phone operation. It can deco
de all PSK QSOs within a 4 KHz segment, maintaining a sorted list of heard callsigns; it can simultaneously deco
de RTTY via soundcard and an external modem, generates CW directly or via WinKey, and includes a voice keyer. WinWarbler interoperates with the free Commander, DXKeeper, and SpotCollector for transceiver control, logging, and spotting.