NV/HEG Mtg. -Sept. 26-27, 1968 investigation of Ft. Page ll Irwin as alternate PILOT LIGHT site appears reasonable notwithstanding the accompanying need for an the Public Health Service network to cover expansion of that area. The question of a safe overpressure for helicopters involved in the exercise was resolved by the explanation that the helicopters would not be airborne at the time of detonation. In response to the question of the possibility of a non-exercise source simulating the radar signal to the aircraft, described in detail. The command signals are carried by UHF data link. Three crystal controlled channels, preselection and utilization. or frequencies, are available for There are four code options for use as desired on the channel selected. modulated signals. The signals transmitted are tone There are two basic modes by which the exercise air- craft is picked up and tracked, skin track mode and beacon mode. modes may be selected in skin track only, beacon track. the the TPQ-10 radar was beacon track only, These or skin/ It is intended that the beacon only will be utilized in exercise. If a bomb is not known to be safe, there is a provision to remove not ct oy only safing power but all pulse power by disengaging a circuit breaker which insures cutting all power to the weapon. An indication of such ft an unsafe position after the weapon has been armed would He by the light ing of warning or disagreement lights. OE SNL Ane $3 FA