the FSK connection

Transceivers capable of [:AFSKFSK:FSK] operation generally provide a [http://en.wikipedia.org/wiki/Transistor–transistor_logic TTL] input (voltage levels +5 VDC, 0 VDC) that controls the switching between Mark and Space frequency generation:

WinWarbler can be configured to generate this signal

or

All of these signals employ [http://en.wikipedia.org/wiki/Rs232 RS-232] voltage levels (+12 VDC, -12 VDC), so an external level converter is required. This can range from a simple one-transistor circuit to a section of a commerical interface.

To use the[:PTTMechanism:PTT serial port's] TxD signal, open the Config window's PTT tab and note the serial port selected in the PTT panel's Port tab. Select the Config window's RTTY tab, and in the Modulation and transceiver mode panel's FSK section,


[: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]