John Galloway wrote:

I would be interested to hear if anyone has any knowledge
or experience of the above static/TE double probe as
shown on the esa-systems web site by following the
links to 'multisonden' and then STATEK:

I may not have understood perfectly, but the connector on the fin is
specifically designed to accept one kind of probe (1, 2 or 3 way).
They are not interchangeable.
I have had the older, usual TE (1 way) fin probe on a DG400 for many
years with no problems (upgraded to an ILEC probe with 2 small holes
instead of the original 4 slotted).
I now have the Triple way on my 600, and it's already showing
problems: there are some small O-Rings which have started
deteriorating and are a ... to replace.
The probe itself is available in black carbon fibre, or in aluminum: I
strongly suggest the latter. The composite ones have soon cracked
(nearly invisible cracks) near the plug, giving problems with vario
reading.

If you are choosing within the options for a new glider, I'd have it
with two separate connectors for TE and Ptot, and would be happy with
fuselage statics. From a reliability point of view.

Aldo Cernezzi