I am trying to make a remote connection to the back of a Thuraya XT satellite phone.
The connector looks like an SMB female
but an SMB plug doesn't fit. On a close inspection it turns out the ID of the socket is 3.5mm, whereas an SMB plug is 3.65mm.
Also, the centre contact does not have a hole in it. It is just a peg with a tiny spike sticking out of the middle. The reason is that the phone is designed to clip into a car holder, which contains a spring loaded mating part.
The centre contact is obviously just spring loaded together, but the outside (the shield) of the plug (in the car holder) is a sprung cylinder i.e. slitted so it mates properly with the solid cylinder of the socket.
I find it hard to believe these bits are custom made.
Would anybody have any pointers to the plug?
Obviously one solution is to buy the car holder and rip the plug out of it :)