Hi ulrichard,
I was hoping that you don't need one of them 
Do you know which are the pins on the Aircotec round connector that are used for the speed sensor signal?
I want to check how different will XCT behave when supplied with a signal for TAS.
Especially in windspeed calculation which is in general OK with GPS only, but values shown are somewhat inconsistent and to my feeling not very precise.
A new Aircotec speed probe is quite expensive, but I think I can find a used one from Brauniger/Flytec.
I've always thought that the sensors inside is identical, but unfortunately the connector type is different.
So if I make a convertor to supply it to the correct pins on the unit connector, in theory it should work.
I'll be very grateful if you can help.
Cheers!
PS: Do you have any idea why your sensor didn't work with XCT? I can't imagine they've made a change in the way it is connected to the instrument between the past and new models. This should be a standartised interface.