I stored the attached picture, but don't remember from where. It shows an Avro Lancaster that looks like no other. Especially the cabin roof resembles the one of an airliner.
I should have been more careful about the informations given with this picture, but unfortunately, I wasn't. I thought it would be an easy thing to find out more about this conversion, but Wikipedia about the Lancaster says nothing about it. The original source said this was for testing some kind of wireless equipment, and it was the last Lancaster conversion ever (post-WWII). The antennae makes it look a bit like some insect, I mean.
Do you know this conversion? Thank you for answers!