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receiver  switch  harness,  then  the  transmitter 
and be careful not to move the servo arms from 
their  centered  position  during  installation.  The 
servo  connectors  are  keyed  to  prevent 
improper connection, but do pay close attention 
when  connecting  them  to  the  receiver.  The 

black wire goes toward the outside edge of the 
receiver case. Mount the switch harness to the 
side  of  the  fuselage  away  from  the  engine 
exhaust  (refer  to  your  model’s  instruction 
manual). Connect the red plug to the receptacle 
on the receiver marked B for battery. 

 

RANG & BATTERY TEST 

It is very important to check the transmitter will operate the model satisfactorily at maximum range. 
 
1.  In  order  to do  this,  place  the model  on  the 
ground and walk away from it whilst operation 
the swashplate controls. Check that the servo 
in the model operate without interference up to 
a distance of 33m.   

2. Check that the transmitter battery status LED 
is  showing  a  bright  red.  Do  not  fly  if  the  LED 
begins  to  flash,  as  the  batteries  need  to  be 
replaced or recharged. . 

 

ADJUSTMENTS 

The operating direction, neutral position and steering angle of each servo are adjusted. 
 
Caution: The basic linkage and adjustments of the fuselage conform to the fuselage design drawing. 
Be sure that center of gravity is at the prescribed position. 
 
Before making and adjustments, set all the servo reverser switches on the front of the transmitter to 
the lower (NOR) position (Switch the switches with a small screwdriver). 
 
Turn on the transmitter and receiver power switches and make the following adjustments. 

 

1.  Neutral  Adjustment:  Check  the  aileron, 
elevator  and  rudder  neutral  adjustment  and 
left-right (up-down) throw. 
 
Check  that  when  trimmed  to  the  center,  the 
servo  horn  is  perpendicular  to  the  servo  and 
check  the  neutral  position  of  the  fuselage 
control surfaces (aileron, elevator, rudder, etc.). 
If the neutral position has changed, reset it by 
adjusting the length of the rod with the linkage 
rod adjuster. 

 

When  the  throw  is  unsuitable  (different  from 
steering  angle  specified  by  the  kit  instruction 
manual),  adjust  it  by  changing  the  servo  horn 
and each control surface horn rod.   

 
2. Check the engine throttle (speed adjustment) 
linkage. 
 
Change the servo horn installation position and 
hole position so that the throttle is opened fully 
when the throttle stick is set to HIGH (forward) 
and  is  closed  fully  when  the  throttle  stick  and 
throttle  stick  and  throttle  trim  are  set  for 
maximum  slow  (backward  position  and  lower 
position, respectively). 
 
3. After all the linkages have been connected, 
recheck the operating direction throw, etc. 
 
Before  flight,  adjust  the  model  in  accordance 
with the kit and engine instruction manuals. 
 
4. Fly the model and trim each servo.   

Summary of Contents for AT402

Page 1: ...Radio Control Transmitter AT402 INSTRUCTION MANUAL Digital Proportional Radio Control System Taizhou Best Team Technology Limited www rcmodel net ...

Page 2: ...turn Off the transmitter power switch Failure to follow this order could cause the engine to go to full throttle and cause an injury Do not make adjustments to the radio system while the engine is running unless absolutely necessary Failure to do so could cause the engine to accidentally go to high speed and cause an injury The transmitter is designed for use with 8 dry cell Non rechargeable AA si...

Page 3: ...ttle trim lever model 1 Elevator trim lever model 2 Carrying bar Elevator model 1 Throttle model 2 rudder stick Throttle model 1 Elevator model 2 Aileron stick Rudder trim lever Aileron trim lever Hook LED Power on Power switch in the upper position the power is turned on Crystal Jack Battery Box Cover Use when replacing the battery Battery Box Charging Jack Charging jack when the transmitter was ...

Page 4: ...unted as shown in the model s instructions Use the rubber grommets screws and brass eyelets supplied when mounting your servos Do not over tighten the mounding screws The servos should be able to move slightly to compensate for engine vibration For each servo use a servo horn long enough to accommodate the entire range of movement for that particular control When mounting the servos make sure the ...

Page 5: ...of gravity is at the prescribed position Before making and adjustments set all the servo reverser switches on the front of the transmitter to the lower NOR position Switch the switches with a small screwdriver Turn on the transmitter and receiver power switches and make the following adjustments 1 Neutral Adjustment Check the aileron elevator and rudder neutral adjustment and left right up down th...

Page 6: ...oves up and down on the horizontal stabilizer of an aircraft It usually controls up and down Linkage Mechanism that connects the servos and the fuselage control surfaces Neutral Means the neutral position It is the state in which a transmitter stick returns to the center when not operated Normal NOR For the servo reversing function it is the normal side the opposite side is the reverse side Rudder...

Page 7: ...y one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help This equipment complies with FCC radiation exposure limits set forth for uncontrolled e...

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