I know it's not an A through D model. Tail is all wrong, and no gun blisters, like the ones on a Catalina.
It has to be either an E or F model, as it has no chin turret, like the G model had.
Ted, could this be it?
"The RAF's No. b223 Squadron, as part of 100 Group, operated a number of Fortresses equipped with an electronic warfare system known as "Airborne Cigar" (ABC). This was operated by German–speaking radio operators who would identify and jam German ground controllers' broadcasts to their nightfighters. They could also pose as ground controllers themselves with the intention of steering nightfighters away from the bomber streams."