PCTI can provide the frequency converters you need for any commercial, industrial or military application including 400Hz frequency converters for aircraft ground support and other combinations of input/output frequencies (50Hz, 60Hz, 400Hz, etc.). Their frequency converters are available as mobile, towable, bridgemount or freestanding units to standards including MIL-STD-704F, MIL-STD-810, MIL-STD-461 and others.