The portable models 454-P and 455-P are broadcast receivers housed in cabinets attractively finished in leatherette. They embody a hinged front cover which effectively protects the dial and controls from damage, dust and weather. Features of their design include: Tropic-proof construction, automatic volume control, magnetite cores in I.F. transformers, oscillator coils and loop coupling coils, air-dielectric trimming capacitors, straight-line tuning dial.