Elecraft K3 Assembly Manual User Manual
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Front Panel and DSP
Front Panel and DSP Description
The Front Panel is a large plug-in module that provides the K3’s user interface (LCD, switches, shaft encoders,
potentiometers, and LEDs) as well as the microcontroller (MCU) and parameter storage (EEPROM and
FLASH). It also includes the 32-bit DSP assembly, which processes all AF and IF signals. See Theory of
Operation, Front Panel and DSP, in the K3 Owner’s Manual.
Front Panel Assembly Procedure
CAUTION
Do not use inside tooth lock washers where split lock washers are specified. Inside tooth lock
washers are slightly larger and may short nearby circuit pads.
Mount three standoffs on the back of the front panel board as shown in Figure 37 . Place the lock washer
between the screw head and the board as shown.
Figure 37. Preparing the Front Panel Board for Mounting, Part 1.