Make certain ATC knows where you are, buy a Transponder you can trust! Use a Transponder and Encoder together for "Mode C" operation. Or, upgrade to a Transponder that offers "Mode S" capability.
If you need one, please see our Encoder section.
If you are looking for a Transponder that is not listed here, please click to send us an email. If we don't have it in stock, we can find it for you!