Make certain ATC knows your location! A transponder will transmit your position, but adding an encoder will also tell ATC your altitude. In addition to a transponder, you need either an encoding altimeter or a blind encoder to operate in Mode "C". If you don't already have an encoding altimeter, adding a blind encoder is definitely the easier and less expensive way to add Mode C capability.

(If you also need a transponder, please click the Transponder link to the left.)

This Trans-Cal SSD-120 Nano is a dependable, solid-state blind encoder. It is compatible with most transponders, and may be mounted in any attitude. The most common location is behind your instrument panel. Installation involves connecting the SSD-120 Nano to your static system, and wiring the encoder to your transponder.

Trans-Cal's SSD-120 Nano features include:

• Very small size and light weight
• Accurate to +/- 50 feet from -1,000 feet to 30,000 feet
• Rapid warm-up time

This item includes an 18 month factory warranty. You may also be interested in a Transponder to use with this SSD-120. Both components are needed for Mode C or Mode S operation.

If you have any questions about this item, please click to send us an email.