Controlling an External Modem

WinWarbler can decode and generate CW, RTTY, and other digital modes via an External Modem connected to a serial port. WinWarbler interacts with a connected External Modem by sending it individual commands, e.g. Initialize or begin transmitting or switch to RTTY. The individual commands required for a particular model of External Modem are obtained from an External Modem Command File. WinWarbler includes External Modem Command Files for the KAM 98, MFJ 464, PK232, PK900, and PTC-IIe; you can [ create an External Modem Control File] for other devices.

Required Connections

To control an External Modem, you will need

Each of the above connections should be described in detail in your External Modem's user guide.

Configuring WinWarbler

On the Configuration window's External Modem tab

On the Configuration panel's CW tab,

Operating in RTTY

To operate in RTTY, click the RTTY button in the Main window's Operating Mode panel. As you tune your transceiver to a RTTY signal, decoded characters should appear in the Main window's Receive pane.

To transmit RTTY,

Your transceiver should switch from reception to transmission, transmitted characters should appear in the Main window's Receive pane, and your transceiver should switch from transmission to reception after all characters have been sent. You can also transmit by constructing and invoking macros.


Note that [:ConfigureRTTY: Soundcard RTTY] can be enabled and used as a tuning indicator for reception with your External Modem; decoded characters received via Soundcard RTTY will appear in the upper Receive pane (marked with an S in its left border) on the "Main window, whereas decoded characters received via your External Modem will appear in the lower receive pane (marked with an X in its left border).

Operating in CW

[:Multimode_Setup:Setting up CW, Phone, PSK, and RTTY Operation]

[:Operation:Getting Started with CW, Phone, PSK, and RTTY Operation]

[:GettingStarted:Getting Started with DXLab]