Get Images Library Photos and Pictures. WW2 Bendix radio direction finder lamp. This lamp is black iron on a WW2 Navy Bendix radio direction finder. The lamp is attached to the original antenna turret allowing the lamp to rotate freely without wire to tangle inside. The original on/off toggle now works the lamp. Resting on felt pads and uses standard base bulbs inside a spun aluminum shade. Very unique and one of a kind lamp. USS Swordfish (SS-193). At San Francisco, California, 13 June 1943, at the conclusion of an overhaul. Photographed by the Mare Island Navy Yard, Calif. Circles mark recent alterations, including a 3"/50 deck gun, platform and mounting for a 20mm gun, radio direction finder loop, signal lamp, radar antenna, and spreaders for a radio antenna. NHHC Photograph Collection, NH 98515. VLF single-turn air core loop KING OA8500 Jack HDTV Directional Over-Air Antenna with Mount and Signal Finder