SC

Type of Radar

Air Search/Surface Search

Manufacturer

General Electric

IEEE Frequency

I and G Bands

NATO Frequency

A Band

Exact Frequency

175 – 225 MHz

Peak Power

100 kilowatts

Pulse Repetition Frequency (PRR/PRF)

60 pps

Pulse Length

5 microseconds

Bandwidth

1.5 MHz

Beamwidth

30 x 40 degrees

Scan Rate

5 rpm

Range Accuracy

± 200 yards

Bearing Accuracy

± 5°

Performance Examples:

(Antenna at 100 foot altitude)

Medium Bomber at 1,000 feet at 30 nautical miles
Fighter at 25 nautical miles
Battleship at 10 nautical miles
Destroyer at 3 nautical miles

Description:

Long wave search sets, installed on destroyers and larger ships to search for planes and surface vessels and for control of interception. All sets have an "A" scope, provision for IFF connections, and work with a gyro-compass repeater.

Transportability:

Shipment includes spares for each set. If separate generator is needed, it is included in shipment. Not air transportable.

Installation:

Has 5 components weighing a total of 1,800 lbs. Weight and dimension of antenna assembly is 450 lbs. 6'11.5" x 8'6". Antennas should be mounted as high as possible, preferably 100 feet or more, above other superstructures.

Personnel:

One operator per shift is minimum.

Power:

Require primary power of 1500 watts at 115 volts, 60 cycles. Uses ship's power of 115 volts, 60 cycles; transformer, if ship's power is 440 volts AC or 220 volts AC; motor generator if ship's power is DC.

Notes.

Attempt to reduce bulk of CXAM by using a newly designed smaller antenna (8'6” x 7'6”). There is no elevation control on any of the sets, but height can be estimated roughly from positions of minimum signal strength.