Special Features:

Nha 546-7273-004, 549-8750-005 and 554-4075-005; 500 kc intermediate frequency transformer; ambient temperture range m55.0 to 85.0 degrees c; altitude 50, 000 feet max; unit shall be tunable from 450 kc to 550 kc when tested; dielectric strength test at sea level 150 vrms, at 50, 000 ft 100 vrms; insulation resistance measurement 500 megohms min; polarization voltage 10 v dc

Properties:

An item having either a single tapped winding (autotransformer type), or two or more windings designed to furnish inductive reactance and/or transfer electrical energy in circuits by means of a magnetic field. It is so designed that its entire intended range of operations is above 20 kilohertz (kilocycles). The minimum value may extend into the audio frequency range (below 20 kilohertz). It may include integral capacitors, coils, resistors, and adjustable tuning cores. For items having only two active terminals see coil, radio frequency. Includes types having windings which may be moved with respect to each other. Excludes transformer, discriminator.