New transponder from Sandia
Sandia Aerospace has developed a new Mode C transponder with a built-in encoder that’s designed to take up minimal panel space. The small, lightweight STX 165 has a compact front bezel and requires about seven inches of panel depth. The STX 165 can be mounted away from the center stack so that prime real estate is available for other avionics. In addition to the transponder code, the STX 165 displays pressure altitude as well as three timer functions. Options include an OAT probe, density altitude display, and an ice alert. The STX 165 has a retail price of $1,700.