Am I talking to myself here?
<Smacks everyone for not paying attention>
I never said they removed the radio operator. They removed the gun. The Radio op if needed would operate one of the waist guns. NOW PAY ATTENTION!
There are two ways at least that it was done removing a crew member.
One was to remove one of the gunners generally one of the waist gunners. Either the single waist gunner operated both guns if things weren't too hot, or the radio op would operate one of them if things were hot.
The other was to remove the bombardier and replace him with one of the gunners, who was then known as the "Toggalier". This was even done on some 10 man crews as the bombardier became unnecessary unless flying in the pathfinder or lead planes. The rest of the bombers dropped when the lead birds dropped so it wasn't necessary to have a highly trained bombardier in the nose. They just needed someone to push the button at the same time and to man the nose guns.
They did not remove navigators as they were more vital to the crew should they have to leave formation due to damage etc. A well trained navigator was far more valuable at that point then a well trained bombardier.
Any questions?

Now let's review what we've learned so far. Below is a typical 10 man B17F crew. Note 4 officers, 6 enlisted men. Officers were Pilot, Co-pilot, Nav and Bombardier. Gunners were enlisted men, including the radio operator. We can deduce from this photo that they had a full crew including a radio operator who no doubt had the radio room gun on the F model.

Now lets return to our original photo of a 9 man crew. What do we see? 4 officers, 5 enlisted men. What can we deduce? They are short a gunner and still have both a bombardier and navigator. This would then suggest that there is no radio room gun. As for the folks mentioning when the gun was removed during production, please keep in mind that is not an indicator of when they started removing the gun in the field.
Any questions?

