The APG-70 was a 1980s redesign of the APG-63 for greater reliability and easier maintenance.[5] Additionally, gate array technology enabled the APG-70 to incorporate new modes with enhanced operational capabilities. To reduce production costs, many of the upgraded radar's modules are common with the F/A-18's APG-73 radar, while the computers / processors share an 85% commonality with that of the F-14's APG-71 radar.

APG-70 systems were originally installed on later model F-15C/D aircraft, but have since been replaced on those aircraft by the APG-63(V)1. As with the basic APG-63, the APG-70 is no longer in production; but were in service on the F-15E Strike Eagle, the Israeli F-15I and the Saudi F-15S.

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