William Bytheway, K7TTY, has been licensed since 1969. His original callsign was WN6HWO and later WB6HWO. When he upgraded to Extra in 1985, the callsign changed to AA6ED. Recently it was changed it to K7TTY.

Products include a 16 channel PSK-31 signal generator, RTTY broadcast scheduler, editor and controller for a commercial HF station, JAVA based RTTY art viewer and a WIN32 based art capture and edit tool. The latest tool is a 3-D satellite analysis tool built around the NORAD SDP/SGP ephemeris propagator, CIA world maps and OpenGL.

Programming languages include C/C++, HTML, JAVA and PASCAL with some experience in BASIC and FORTRAN. Included are dialog-based WIN32 applications using MS Visual C++ 6.0, Borland PASCAL 7.0 and  C++ 4.52 IDE and performed extensive work with RS-232 and TCP/IP protocols on DEC-VMS, UNIX and DOS/WIN32 systems.

K7TTY is experienced in software and systems engineering which includes software design and development, integration and test, system architecture development, simulations, command and control, mission planning, maintenance and operational readiness.