B-17G Cockpit Auxiliary Window F-105 Thunderchief The selector enables selection of

The selector enables selection of the desired track and provides to-from information

NAS Coco Solo housed several Patrol/Patrol Bomber aircraft during its tenure

See photo of a similar antenna mounted to the fuselage of a B-24 bomber

Here is an interesting video describing how the K-13 functioned

B-17G Cockpit Auxiliary Window F-105 Thunderchief The selector enables selection ofThis is a front left auxiliary cockpit window installed in some G model B 17's, although they could be retrofitted to other models. They could be opened inward to allow a pilot to de ice his main windscreen or, in the worst case, to see forward if the main screen was iced over. The internally facing, botton mounted handle unlocks when flipped up, and then the opened window would be affixed to the internal cockpit ceiling with the snap fit strap.