The first receiver in the "Skysensor" series. Radios such as this one sparked a surge in the popularity of listening to shortwave broadcasts. (Many users collected verification cards after tuning in stations all over the world.) Tuning is done through a large film dial that reinforces the image of a precision instrument. A matte black finish is used, fitting for such "hardcore" equipment. This matte black came to define the visual identity of the "Skysensor" series through the ICF-5600, ICF-3000, and later models.