The UPA-35 Training Aid below was contributed by Charles Egan, CMSgt USAF Ret
Technical Specs: (Radio Research catalog)
PPI 12` CRT : Range 0-250 miles cont. variable. Range-marks: 1,2,5, 10,20,50
and variable, offset center elect. Magnetic defl, joystick controls. Pwr: 115V, 60
Hz. Mfr: Hazeltine. Type UPA-35.