Lcd - Kenwood TS-590SG Manual

We will provide the temperature data when a continuous transmission is made at a 25 ° C or 77 ° F room temperature so
that you can understand the TS-590S/SG s superb cooling capability.
As can be seen from the above graph, the output power does not drop (the protection is not activated) while transmitting
continuously for more than two hours at a 25 ° C or 77 ° F room temperature with an output power of 100 W.
As explained above, TS-590S/SG is designed for heavy-duty operation as were the previous HF transceivers, but, as a
general rule not limited to KENWOOD products, the higher the temperature, the shorter the life span of an electronic device.
Therefore, we recommend you use the transceiver with an appropriate output power that suits the circumstances in order
to prolong the longevity of the transceiver.

7.2 LCD

We wanted to complete the display without uneven brightness! That was our goal of designing the display screen, or the
face of the transceiver. On the TS-590S/SG, after repeated examinations and trials, we have finally reached our goal of
a display with perfectly even brightness.
The secret of this even brightness lies in the illumination structure of the LCD.
The TS-590S/SG s illumination structure is a bottom direct-lit type backlight structure in which LEDs are lit from the reverse
side of the LCD. In the stage of discussing the structure, we have also examined front-lit and edge-lit designs that have
been already proven in the previous transceivers, but they didn t suit the display size of the TS-590S/SG, resulting in uneven
illumination. So, we focused on the bottom direct-lit type backlight structure and further studied the design.
We would like you to confirm the beauty of the display with your own eyes.
And the TS-590SG allows you to select an intermediate color between the conventional amber and green. There are 10
selectable intermediate colors. Besides amber and green, you can now select an intermediate color such as yellow and
customize it as your preferred backlight color.
In addition to the backlight itself, we also carefully designed the brightness (dimmer setting) of the backlight and the
segment displays for better visibility. You can choose among 7 steps of brightness (OFF and 1 though 6) of the backlight
in the menu mode.
The TS-590S/SG has more dimmer setting steps than the TS-570 or TS-2000/X, allowing a user to adjust the backlight
brightness to suit the installation environment. For the segment displays on the LCD, we have adopted a large-size, positive
LCD.
Focusing on the visibility, for 7-segment and 13-segment displays, we have adopted the same large-size characters as in
the TS-570 that were highly evaluated. The type of LCD chosen is a semi-transmissive TN LCD (1/3 duty) that has high
contrast.
Figure 7-6 Temperature Data while Transmitting Continuously
STRUCTURAL FEATURES 07
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