Helang Electronics T572 Users Manual

Preliminary User’s Manual

Introduction

The T572 FM Radio is specifically made for simple 5-channel electric model airplanes.

Transmitter

Install 8 new AA Alkaline Batteries into the transmitter battery compartment. Do not use
rechargeable batteries. Always be sure to insert the batteries in the proper polarity order.
Switch the power on. A bright green and red light indicates good power. Replace the batteries
when the green light gets dim compared to the red light.

WARNING The crystals are not to be changed. Changing frequencies by the consumer will void
the warranty and is a violation of FCC regulations.

Always remember to never have the airplane “ON” without having the transmitter “ON”. The
transmitter should always be turned “ON” first before supplying power to the airplane and turned
‘OFF’ last after removing power to the airplane.

Hold the transmitter with two hands, gripping the sides in the palms of each hand. Do not touch
the antenna while in use because it will affect the power output. Always make sure your antenna
is attached and fully extended before use, otherwise your operating range will be greatly reduced
and could result in damage to your transmitter, aircraft and/or injuries to yourself and others.

Installation of the Receiver

Check the polarity of all connections and ensure the connections are snug.

WARNING Do not trim the length of the receiver antenna wire. This will severely affect the
operating range and could result in injury to yourself and others.

Elevator and Rudder Servo Trim Settings

Trim Setting before Flight

The servo trim enables minor adjustment of the servo neutral position so that the plane will fly
straight when the stick is in the center position. Before adjusting the servo trim, make sure that
when both the stick and the servo trim is in the center position, (1) the servo arm is perpendicular
to the push rods, and (2) the elevator and rudder of the plane is flush with the tail wing.

Servo Reversing Switches

The switches found in the battery compartment will reverse the servo direction.

Range Testing

With the plane resting on the ground and transmitter powered in hand with antenna fully
extended, walk away about 100 pieces while moving the control sticks back and forth. Listen
carefully to make sure that the servo motor noise is heard only when you move the sticks. The
control surfaces should operate smoothly with direct correspondence to your stick movements.

Statement for U.S.A.

This device complies with part 15 of the FCC rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept
any interference that may cause undesired operation. Transmitter frequencies are not to be
changed. Changing frequencies by the consumer will void the warranty and is a violation of FCC
regulations.

WARNING changes or modification to this unit not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.

NOTE This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used accordance with the
instructions, may cause harmful interference to radio communications.

However, there is no guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by 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 difference from that to which the receiver is

needed.

Consult a dealer or a TV/Radio technician for help.