RTTY with WinWarbler

WinWarbler Online Help Contents

WinWarbler provides two independent means of sending and receiving RTTY signals:

To begin RTTY operation, click the RTTY button in the Operating Mode panel located on the right side of WinWarbler's main window. You can specify a set of commands to be executed whenever WinWarbler switches to the RTTY operating mode by setting up a RTTY startup macro

When first installed, soundcard RTTY is enabled and RTTY via external modem is disabled. When you click the RTTY button (in the main window's Mode panel), you'll see a single receive pane and a single transmit pane; the channel label to the left of the receive pane is S (for Soundcard RTTY). WinWarbler uses JE3HHT's MMTTY engine; an icon representing this application will appear in your Windows task bar while soundcard RTTY is in progress; note that the MMTTY engine can take much longer to start and stop if a virus scanner is running on your PC. Once MMTTY is running, WinWarbler graphically presents a 4 kHz waterfall display, allowing you to specify your mark frequency by simply pointing and clicking with your PC's mouse. 

With soundcard RTTY enabled, you can optionally enable G3YYD's 2Tone RTTY demodulator to decode RTTY in parallel with the MMTTY engine. 2Tone displays an independent Main window with a spectrum display and yellow Mark/Space indicators; the characters it decodes appear in a receive pane on WinWarbler's Main window with a channel label of 2 (for 2Tone).  2Tone's Main window also provides a button that toggles between wide and narrow filtering, a button that toggles between optimization for normal and fluttered signals, and a menu that lets you enable or disable squelch, and displays a Settings window that selects the soundcard and soundcard channel to be used, operating mode, and RTTY baud rate.

WinWarbler's RTTY settings default to support soundcard RTTY operation immediately after installation, but you can optimize them to improve performance in specific conditions -- including by adjusting  the MMTTY engine's demodulation parameters.

If you have an external modem connected to your PC via a serial port, you can enable a second receive pane -- its channel label is X (for eXternal modem). 

With both soundcard and external modem receive panes active, you can decode the same signal simultaneously (diversity decoding), or simultaneously monitor nearby signals  -- such as a DX station and her pileup. Clicking the soundcard RTTY or external modem receive pane selects it; the currently selected pane is distinguished by a red channel label on its left-hand border. The Transmit panel's QSO selector lets you specify whether transmission is accomplished via soundcard RTTY or via the external modem:

QSO Selector Transmission
  via selected pane
S via soundcard RTTY
X via external modem

With the QSO Selector set to S or X, the QSO Info panel merges the information captured from the soundcard RTTY and external modem receive panes; otherwise, the information captured from each pane is separately maintained.

Since 2Tone is not used for transmission, its receive pane cannot be selected

If Commander is running, selecting a receive pane will place your transceiver in the appropriate mode, as specified by soundcard and external modem configuration settings.