CXAM (radar)

CXAM / CXAM-1


The CXAM long-wave radar (and its upgraded version, the CXAM-1) are among the first radars to be installed on American vessels. The first radars were installed on the main loads in early 1942. The radar was capable of detecting both aircraft and surface targets (92.6 km / 50 nm in the case of aircraft, 26 km / 14 nm in the case of ships with an accuracy of +- 182 m / 200 yards / 3° (some sources give the CXAM-1 a range of up to 185 km / 100 nm for airborne targets; in the Battle of the Coral Sea, the CXAM-1 radar of the USS Lexington detected Japanese aircraft carriers at a range of 126 km / 68 nm). Despite its relatively short range and large mass, the use of this radar revolutionized small craft air defense.


The origins of the CXAM radar go back to the experimental XAF radar developed at the Naval Research Laboratory (NRL) and tested in December / 12/1938 on the battleship USS New York, and to the CXZ radar developed by Radio Corporation of America (RCA) and tested in December / 12/1938 to January / 01/1939 on the battleship USS Texas. Based on the results of the tests, the Navy ordered 6 XAF radars from RCA (an order expanded in 1940 to include an additional 14 units), but the production radars, designated CXAM, incorporated elements from both radars (CXZ and XAF). In September 1940, the first CXAM radars were installed on the battleship USS California, the aircraft carrier USS Yorktown, and the heavy cruisers USS Pensacola, USS Northampton, USS Chester, and USS Chicago. After the installation of the first 6 units, production continued on the next 14 radars ordered. These radars were not identical to the first production run, as their design reflected the experience already gained in production and operation and were designated CXAM-1. The first CXAM-1 radar was installed on the battleship USS Texas in October/10/1941, followed by the battleships USS Pennsylvania, USS West Virginia, USS North Carolina and USS Washington and aircraft carriers USS Lexington, USS Saratoga, USS Ranger, USS Enterprise and USS Wasp. CXAM-1 was also installed on the heavy cruiser USS Augusta, two light cruisers, and the seaplane carrier USS Curtiss (as of 07.12. 1941, a total of 19 CXAM and CXAM-1 radars had been installed).


The CXAM/CXAM-1 radar consisted of 9 basic blocks with a total weight of 2268 kg / 5000 lb, with the heaviest block being the antenna (4.5 x 5 m / 5´x 15´x 8") weighing 680 kg / 1500 lb (CXAM-1 - 545 kg / 1200 lb). The radar was operated by one person, and an "A" type screen was used to display the situation. The radar required 5 kW (110 V, 60 Hz) of power and had its own power supply, ensuring operation even in the event of failure of on-board power supplies.



Source: www.history.navy.mil
pwencycl.kgbudge.com
http://en.wikipedia.org/wiki/CXAM_radar
Robert C. Stern. Battleship in Action, part 1; Signal Squadron 1980, ISBN 0-89747-107-5
URL : https://www.valka.cz/CXAM-radar-t85014#313638 Version : 0

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Anténa radiolokátora CXAM inštalovaná na bitevnej lodi USS Northampton (CA-26), 15.08.1941, Brisbane, Australia a novší CXAM-1 na lietadlovje lodi USS Ranger (CV-4) v novembri 1942 (v popredí stíhacie lietadlo F4F Wildcat).


Zdroj: http://en.wikipedia.org/wiki/CXAM_radar
CXAM (radar) - Anténa rádiolokátora CXAM

Anténa rádiolokátora CXAM
CXAM (radar) - Anténa rádiolokátora CXAM-1

Anténa rádiolokátora CXAM-1
URL : https://www.valka.cz/CXAM-radar-t85014#313639 Version : 0
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