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A keystone module is a standardized snap-in package for mounting a variety of low-voltage electrical jacks or optical connectors into a keystone wall plate, face plate, surface-mount box, or a patch panel. Keystone modules have a rectangular face of 14.5 mm wide by 16.0 mm high and are held in place with flexible tabs.
The names of the aircraft shown in the table are not necessarily those they carried when provided for evaluation as at this point an aircraft would usually be referred to as the Manufacturer X.XX/XX, e.g., the Avro B.35/46 – this is in addition to the manufacturer's own separate internal designation for the aircraft, e.g., Avro 698.
In 1928, it merged with Loening and was known as Keystone–Loening. [2] In 1929, it was taken over by Curtiss-Wright . Also in 1929, the Keystone–Loening plant on the East River in New York City was closed by Curtiss-Wright and the operation was moved to the Bristol, Pennsylvania.
On April 28, 1931, the army ordered 25 improved Y1B-4s as the Keystone B-4A. This production version was part of the last biplane bomber order made by the Army Air Corps (along with 39 B-6As, identical in all respects except their make of engine), and the B-4As, delivered between January and April 1932, were the last biplane bombers delivered ...
The B-3 was originally ordered as the LB-10A (a single-tail modification of the Keystone LB-6), but the Army dropped the LB-'light bomber' designation in 1930. Although the performance of the B-3A was hardly better than that of the bombers flown at the end of World War I , it had come a long way in terms of flight safety.
Seven aircraft ordered but delivered as the Y1B-4 and Y1B-6 with different engine installations. Y1B-6 Two pre-production aircraft and three converted B-3As, as the LB-10 but with two 575 hp (429 kW) Wright R-1820-1 engines. B-6A Production version of the Y1B-6, 39 built.
The Keystone XLB-6 prototype was created by refitting the final triple-tailed Keystone LB-5 (serial number 27-344) with an LB-5A tail unit; longer (75 foot) straight-chord, untapered and noticeably swept-back wings; and 525 hp (391 kW) Wright Cyclone R-1750-1 radial engines suspended on struts between the wings rather than mounted on the lower ...
Keystone wall plates are made to work with many different types of cabling solutions, including coaxial, twisted pair, HDMI, optical fiber, etc. Keystone wall plates are made of plastic and have one to twelve ports. A keystone port is a hole in the wall plate which allows the insertion of a keystone module or other male or female cabling ...