My first question is about the mystery panels In the SA-5. They are the ones that appear above the speed officer's and the fire control officer's main panels and display the Lissajous curve during AS-3 tracking. Can you tell me their function?

This display shows the received signal strength in Epsilon - Summa - Beta.

Both panels has the same image, but with different options.

On the KI-236V panel, it has an illuminated range scale for received signal strength (dB).
At the left side of this panel, there is a "Control" switch (not simulated) with options of self test with the K7 tower.

On the KI-234V panel, this display has no range scale, as there is a separate instrument for more precise received signal strength (dB) indication.