Light Aircraft Association

Thanks, Mike. Unfortunately that doesn't work, because funke (in their wisdom) have elements of the transponder setup and memory contained in the connector and not in the transponder unit itself. I hadn't realised this until I recently came to connect GPS wiring from a Garmin G5 to the transponder ...

An alternative that you could consider to test this without costing very much money at all would be to keep your existing cable and for the purposes of ground testing, make up a jumper connector whereby you can remove your cable from the transponder insert your cable into the jumper and the jumper b...