RadioLink AT9SPro Quick Start Manual page 10

RECEIVE and press PUSH button to enter and check the RSSI value. RSSI value between 0 to
-30dBm is normal when the transmitter keeps about 30 centimeters distance from the receiver.
The RSSI value is closer to 0, the signal is stronger.
Real-time Built-in Telemetry
R9DS receiver integrates telemetry of signal strength and receiver voltage by default. It can also
realize the telemetry of model battery voltage or flight controller and GPS information when used
with RadioLink PRM-01 or PRM-03 telemetry module, and the telemetry information can be
displayed on the screen of AT9S Pro or AT10II transmitter.
Model battery voltage telemetry: When connecting R9DS to telemetry module PRM-01, the
model voltage will be displayed on the screen of AT9S Pro (See picture below).
Note: PRM-01 is sold separately. PRM-01 only supports R9DS or R12DS receiver.
Flight controller and GPS information telemetry: When connecting R9DS to telemetry
module PRM-03 and flight controller, more information will be displayed on the screen of AT9S
Pro, including the model battery voltage, speed, climb, throttle, longitude, latitude, altitude, GPS,
RSSI, flight mode, yaw, roll, pitch, and distance (See picture below).
Note: PRM-03 is sold separately. PRM-03 only supports R9DS or R12DS receiver, and it works
with flight controller crossflight, PIXHAWK, Mini Pix, TURBO PiX or APM .
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