The SCR-784 was a radar set used by the U.S. Army.

It was a mobile version of the SCR-584, used to control the fire of anti-aircraft batteries,[1] and mounted on a searchlight trailer called a K-84.

The set was used to guide the flare plane over the target.

[2] Frequency: 2,800 MHz Pulse Width: 0.8 μs Pulse Repetition Rate: 1707 pps Vertical Coverage: 300 to 10,000 yards (270 to 9,140 m) Indicator Type: display 7 inch PPI and, two 3 inch CRT's for range determination There are no known surviving examples of this array.