ParkZone Radian RTF PKZ4700 Data Sheet

•  Prevents unintentional electric motor response on  

start-up.

•  Eliminates the possibility of over-driving servos on

start-up.

•  Establishes low-throttle failsafe if the RF signal is lost.
•  The AR500 removes servo output pulses to all channels

except the throttle channel during failsafe.

•  The AR500 throttle failsafe position is stored via the

throttle stick position on the transmitter.

RECEIvER POwER Only
•  In electric aircraft, when the receiver only is turned on

(no transmitter signal is present), the throttle channel 

has no output, to avoid operating or arming the 

electronic speed control. 

•  In glow-powered models, the throttle servo receives no

input so it remains in its current position.

note: Some analog servos will coast slightly even 

though there is no signal present. This is normal.

•  All other channels will move to the positions set  

during binding

AfTER COnnECTIOn
•  When the transmitter is turned on, and after the receiver

connects to the transmitter, normal control of all 

channels occurs. 

•  After the system makes a connection, if loss of signal

occurs, the AR500 failsafe drives the throttle servo only 

to its preset failsafe position (low throttle) that was set 

during binding. 

•  All other channels receive no output pulses/ commands,

and are not active during failsafe. 

The DX5e features servo reversing on channels 1-4. The 

switches are located at the lower front of the transmitter  

and are used to select the direction of each channel. Use  

a small screwdriver to change the switch position to  

normal or reverse.

The DX5e offers a high/low rate function on aileron,  

elevator and rudder. When the HI/LO rate switch is in the 

upper position or “HI” position, 100% travel is achieved  

on the aileron, elevator and rudder channels. When the 

switch is in the lower position a reduced travel of 70% is

achieved on the aileron, elevator and rudder channels. This 

is useful allowing the aircraft to have a high control rate 

(switch in the “HI” position) for aggressive maneuvers and 

a low control rate (switch in “LO” position) for smooth, 

precise maneuvers.

•  High 100% rate on aileron, elevator and rudder
•  Low 70% rate on aileron, elevator and rudder

The DX5e offers an Elevon mix. Elevon (also called delta 

wing) mixing combines the function of ailerons with the 

function of the elevator to allow precise control of both roll 

and pitch for delta wing aircraft. To activate the Elevon mix, 

move the mix switch to the on (up) position.

AILE Servo Port

(Left Elevon)

ELEV Servo Port

(Right Elevon)

Elevon Wing Type Connection

•  ELEV servo port (right aileron)
•  AILE servo port (left aileron)

note: If proper servo direction cannot be achieved 

with the servo reversing switches, swap the servo input 

leads from AILE to ELEV or vice versa.

With all radio installations, it is vital the onboard power 

system provides adequate power without interruption to the 

receiver even when the system is fully loaded (servos at 

maximum flight loads). This becomes especially critical with 

giant-scale models that utilize multiple high-torque/ high-

current servos. Inadequate power systems that are unable 

to provide the necessary minimum voltage to the receiver 

during flight loads have become the number-one cause of 

in-flight failures. Some of the power system components 

that affect the ability to properly deliver adequate power 

include: the selected receiver battery pack (number of cells, 

capacity, cell type, state of charge), switch harness, battery 

leads, regulator (if used) and, unless it’s a regulator, power 

bus (if used).

While a Spektrum receiver’s minimum operational voltage is 

3.5 volts, it is highly recommended the system  

be tested per the guidelines below to a minimum acceptable 

voltage of 4.8 volts during ground testing. This  

will provide head room to compensate for battery 

discharging or if the actual flight loads are greater than the 

ground test loads.

1.  When setting up large or complex aircraft with multiple 

high-torque servos, it’s highly recommended that a 

current and voltmeter (Hangar 9 HAN172) be used. Plug

the voltmeter in an open channel port in the receiver 

and, with the system on, load the control surfaces 

(apply pressure with your hand) while monitoring the 

voltage at the receiver. The voltage should remain above 

4.8 volts even when all servos are heavily loaded.

2.  With the current meter in line with the receiver battery 

lead, load the control surfaces (apply pressure 

with your hand) while monitoring the current. The 

maximum continuous recommended current for a 

single heavy-duty servo/battery lead is three amps 

while short-duration current spikes of up to five amps 

are acceptable. Consequently, if your system draws 

more than three amps continuous or five amps for short 

durations, a single battery pack with a single switch 

harness plugged into the receiver for power will be 

inadequate. It will be necessary to use multiple packs 

with multiple switches and multiple leads plugged into 

the receiver.