[Ex Shack]

Hi
I doubt if it could be tied down to any one type of a/c, but they were not identical and the various stations for the W/op may have required some variation around a "standard" format.
If you have Cockpit parts found close by the part we are discussing it might give a clue. My use of the trailing aerial was on the later Shackleton and the W/op was immediately behind the pilots. I think that in the Lancaster he was further back in the a/c but I don't know for certain and I don't know the Halifax , Stirling or Wellington at all
Regards
Dick