I have a cessna 210 that needs a new transponder, and I am thinking of going with a Mode S ADS-B unit to comply with the 2020 deadline. Do you have anything that couples with the KLN 94 GPS?
The KLN-94 is not a WAAS GPS, nor is it upgradeable to one. We recommend the KT-74, but if you decide to upgrade to a GPS400W or GNS430W, then you would want to go with a GTX-330.