To assemble the upper frame,
use M2.5 *6 hexagon round
heads to cross between
member frames. The member
frame with holes is for the
antenna tube and should be
placed at the rear.
Use M2 * 4 round Phillips’ screw,
fixed to the frame, to mount
between two frames.
Slot the upper frame into the
rear channel on the upper
deck.
Use M2.5 *6
hexagon
round screw
to tighten the
frame
mounted on
the deck.