WinWarbler Online Help Contents
The PTT tab of WinWarbler's Configuration screen contains two panels that indicate how the transceiver is to be switched between transmit and receive modes. (screen capture)
When Soundcard RTTY is active, the specified PTT port is used by the MMTTY engine for PTT (if the PTT Mode is set to RTS+DTR) and/or FSK (if the Soundcard RTTY modulation and transceiver mode panel is set to FSK (USB) or FSK (LSB).
PTT Mode panel
| none | the transceiver must be manually switched between receive and transmit modes, or utilize VOX |
| RTS | the RequestToSend modem control signal is asserted on the PTT port when transmitting; this choice is not available when Soundcard RTTY is active. |
| DTR | the DataTerminalReady modem control signal is asserted on the PTT port when transmitting; this choice is not available when Soundcard RTTY is active. |
| RTS+DTR | both the RequestToSend and DataTerminalReady modem control signals are asserted on the PTT port when transmitting except when operating CW: |
| Xcvr Ctrl App | messages are sent to a transceiver control application (e.g. Commander) directing it to switch the transceiver between receive and transmit modes |
PTT port panel
This panel's caption indicates how the selected port is being used:
| unused | the selected port is not being used |
| PTT | the select port's modem control signals are being used to effect transmit/receive switching |
| MMTTY FSK | the selected port's TxD signal is being used by the MMTTY engine to convey FSK data to the transceiver |
| MMTTY PTT & FSK | the select port's modem control signals are being used to effect transmit/receive switching, and its TxD signal is being used by the MMTTY engine to convey FSK data to the transceiver |
The panel lets you select the serial port used for transmit/receive switching and/or Soundcard RTTY FSK:
| none | no serial port is used for transmit/receive switching and/or Soundcard RTTY FSK |
| com1-64 | asserts modem control signals on the selected PC serial communications port, as specified by the PTT mode setting; if Soundcard RTTY is enabled and FSK mode is selected, FSK data is conveyed via port 1's TxD pin |
