7 STRUCTURAL FEATURES
TS-590S CONTENTS 51
We have designed the main control knob located in the center of the front panel, focusing on easy
handling and good appearance.
For the encoder, a 250-pulse magnetic encoder is adopted, which enables the pulses are multiplied
by 4 using software to produce 1,000 pulses per revolution so that a user can tune to the desired
frequency smoothly.
Each of the aluminum parts is machined with CNC (computerized numeric control) and treated with
spin finish. We also paid careful attention to the color of the main control knob; we have colored the
knob with a color alumite treatment.
We made samples repeatedly until the desired color was finalized. The alumite color is adjusted to
match the rubber color of the knob ring and the paint color of the front panel in order to express the
integration and massiveness of the entire panel.
Not only for the main control knob, easy handling was our priority when designing the sizes and
locations of other controls (knobs and keys). We carefully studied the sizes and layout of the knobs
so that a finger will not hit the adjacent knob when a user turns a knob.
Though the TS-590S has a relatively compact front panel as an HF transceiver, the controls are
positioned for comfortable operation.
Figure 7-8 Main Control Knob