What computer connections does the K3 have?
The K3 has the features of most high-end “sound card interfaces” built in. Transformer-coupled stereo line out is included. This enables you to have the main receiver and the subreceiver feed into your computer for various data modes. Transformer-coupled line input is provided, for various digital modes or other external audio sources for transmit. The RS232 serial interface supports RTS and DTR inputs. These can be configured by use of a set up menu so either signal can be PTT, KEY or both. This meets the needs of most data mode and logging programs. We used RS232 to support users of still-popular DOS mode logging and other utility programs, as well as computers with legacy ports. Elecraft also sells a USB-to-RS232 cable that has been tested with the K3 to allow users of more modern computers complete access to the interface. The serial port is also the means by which you can remotely control the K3. The port supports all standard data rates up to 38,400 bits per second. Firmware upda
