The radio set AN/CRN-2 was an air transportable glide path transmitter used by the Army Air Force during and after World War II, the set was standardized on 5 Feb 1944. and was an upgrade of SCR-592.
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Signals from the transmitter are received by the pilot of the aircraft, over the AN/ARN-5 receiving equipment. which provides visual indication of the proper course of descent in the vertical plane during instrument landing operation. At an altitude of 3,000 feet it provides a straight-line glide path course with good definition from a minimum distance of 15 miles from the point of landing contact with the ground. The angle indicated between the horizontal and the glide path is readily adjustable between 2 and 5 degrees.
The equipment operates in the frequency range of 329 to 335 Mc. power output is 25 Watts of CW power. the signal is a straight line glide path-double beam MCW Modulated continuous wave system. the range is 15 miles at 3,000 feet.
The transmitting components were mounted on an air transportable trailer (the V-1), power is provided by a PE-120 Generator (115 volts) and PP-29 Rectifier. Total weight is 1800 Lbs.
The AN/ARN-5 consists of antenna system