RadioLink AT9SPro Quick Start Manual page 9

(5) Antennas should be kept away from metal conductor and carbon fiber at least half inch
away and no over bending.
(6) Keep antennas away from motor, ESC, or other possible interference sources.
(7) Receiver contains some electronic components of high-precision. Be careful to avoid strong
vibration and high temperature.
2. Transmitter Antenna Orientation
(1) The transmitter antenna orientation is adjustable. Make sure the antenna never points
directly at the model when flying as this may possibly decrease the receiver signal (See
Picture 1 below).
(2) If the antenna is upright, the antenna signal mainly diverges in the horizontal direction,
which is beneficial to flying farther (See Picture 2 below); if the antenna is horizontal and
parallel to the ground, the signal mainly diverges in the vertical direction, which is beneficial
to fly higher (See Picture 3 below), so it is best to place the transmitter antenna
perpendicular to the connection line between the remote control and the aircraft during
flight.
(3) During the flight, please ensure that there is no obstruction between the transmitter antenn
and the receiver antenna to maximize the communication distance.
Picture 1
RSSI Testing
RSSI stands for Received Signal Strength Indicator. Before flight, always remember to do the
RSSI testing to avoid the possible unexpected signal loss.
1. Power on transmitter and receiver, keep them with the
distance of about 30 centimeters and both antennas straight
(See the right picture).
2. Enter the basic menu. Rotate the PUSH button to select
Picture 2
8
a
Picture 3