KW202 topside, showing lots of wires. The vertical PCB in the foreground is the calibrator, and at rear left is the solid state notch & Q-multiplier board. Notice the writer’s black plastic cover over the VFO capacitor, to reduce drift. Also notice the yellow Kapton tape covering a hole on top of the VFO box. This is directly below the lid finger hole. It stops unwanted rubbish getting into the VFO.