Horizon Hobby AR7600 User manual

Receiver Installation

In gas and glow aircraft install the main receiver using the same method you would use to install

a conventional receiver in your aircraft. Typically, wrap the main receiver in protective foam and

fasten it in place using rubber bands or hook and loop straps.

Alternately, in electric airplanes or helicopters, it’s acceptable to use thick double-sided foam tape

to fasten the main receiver in place.

Mounting the remote receiver in a slightly different location, even just inches away from the

primary receiver, gives tremendous improvements in path diversity. Essentially, each receiver

sees a different RF environment and this is key to maintaining a solid RF link, even in aircraft that

have substantial conductive materials (e.g. larger gas engines, carbon ﬁber, pipes, etc.), which

can weaken the signal.

Using servo tape, mount the remote receiver keeping the remote antennas at least 2 inches away

from the primary antenna. Ideally, the antennas will be oriented perpendicularly to each other. In

airplanes, we’ve found it best to mount the primary receiver in the center of the fuselage on the

servo tray and to mount the remote receiver to the side of the fuselage or in the turtle deck.

In helicopters, there is generally enough room on the servo tray to achieve the necessary separation.

If necessary a mount can be fashioned using clear plastic to mount the external receiver.

Important: Y-Harnesses and Servo Extensions

When using Y-harnesses or servo extensions it’s important to use standard non-ampliﬁed

Y-harnesses and servo extensions as this can/will cause the servos to operate erratically or not

function at all. Ampliﬁed Y-harnesses were developed several years ago to boost the signal for

some older PCM systems and should not be used with Spektrum equipment. Note that when

converting existing models to Spektrum be certain that all ampliﬁed Y-harnesses and or servo

extensions are replaced with conventional non-ampliﬁed versions.

Binding

The receiver must be bound to the transmitter before it will operate. Binding is the process of

teaching the receiver the speciﬁc code of the transmitter so it will only connect to that speciﬁc

transmitter.

1. To bind an AR7600 to a DSM2 transmitter, insert the bind plug in the BATT/BIND port on the

receiver.

AR7600 User Guide

The AR7600 full range 7-channel receiver features DSM2™technology and is compatible with

all Spektrum™and JR®aircraft radios that support DSM2 technology including: JR12X, X9303,

Spektrum DX7, DX6i, DX5e and Module Systems.

Note: The AR7600 receiver is not compatible with the Spektrum DX6 parkﬂyer transmitter.

Features

 •7-channelfullrangereceiver

 •PatentedMultiLinkreceivertechnology

 •Includesoneinternalandoneremotereceiver

 •SmartSafe™failsafesystem

 •QuickConnect™withBrownoutDetection

 •FlightLogcompatible(optional)

 •Singlereceivercapable(canbeusedwithorwithouttheincludedRemote

Receiver).

 •2048Resolution

 •High-speed11msoperation

 •Holdindicator(RedLEDindicatesnumberofholdsincurredduringight).

Applications

Full range up to 7-channel aircraft including:

 •Alltypesandsizesofglow,gasandelectricpoweredairplanes

 •Alltypesandsizesofno-poweredgliders

 •Alltypesandsizesofglow,gasandelectricpoweredhelicopters

Note: Not for use in airplanes that have full carbon fuselages. Not for use in airplanes that

have signiﬁcant carbon or conductive structures. It is recommended to use either the

AR6250 or AR9300 receivers for carbon fuselage applications.

Note: When used as a single receiver it is recommended that an appropriate model type is

used.Recommendedtypesofaircraft:250-to500-sizeelectrichelicopters,

parkﬂyer and sport aircraft.

Specifications:

 Type:DSM2fullrangereceiver

 Channels:7

 Modulation:DSM2

 MainReceiverDimensions:1.15x1.35x0.45in(29.2x34.3x11.4mm)

 RemoteReceiverDimensions:0.80x1.10x0.27in(20.3x28.0x6.9mm)

 MainReceiverWeight:.31oz(8.9g)WeightwithRemoteReceiver:.47oz(13.4g)

 Voltagerange:3.5to9.6V

 Resolution:2048

 Framerate:11mswhenpairedwiththeDX7se

 Compatibility:AllDSM2aircrafttransmittersandmodulesystems

PatentedMultiLink™ReceiverTechnology

The AR7600 incorporates dual receivers, offering the security of dual path RF redundancy. An

internal receiver is located on the main printed circuit board, while a second external receiver

is attached to the main board with a 6-inch extension. By locating these receivers in slightly

different locations in the aircraft, each receiver is exposed to its own RF environment, greatly

improving path diversity (the ability for the receiver to see the signal in all conditions).

AntennaPolarization

For optimum RF link performance it’s important that the antennas be mounted in an orientation

that allows for the best possible signal reception when the aircraft is in all possible attitudes and

positions.Thisisknownasantennapolarization.Theantennasshouldbeorientedperpendicular

toeachother;typicallyoneverticalandonehorizontal(seeReceiverInstallation).Theremote

receiver’s antenna should be mounted in a position perpendicular at least 2 inches away from

the main receiver’s antenna using double-sided foam tape.

Note: To bind an aircraft with an electronic speed controller that powers the receiver through

the throttle channel (ESC/BEC), insert the bind plug into the BATT/BIND port in the

receiver and the throttle lead into the throttle (THRO) port. Proceed to Step #2.

2. Power the receiver. Note that the LED on the receiver should be ﬂashing, indicating that the

receiver is in bind mode and ready to be bound to the transmitter.

3. Move the sticks and switches on the transmitter to the desired failsafe positions (low throttle

and neutral control positions).

4. Follow the procedures of your speciﬁc transmitter to enter Bind Mode, the system will

connect within a few seconds. Once connected, the LED on the receiver will go solid

indicating the system is connected.

5. Remove the bind plug from the BATT/BIND port on the receiver before you power off the

transmitter and store it in a convenient place.

6. After you’ve set up your model, it’s important to rebind the system so the true low throttle and

neutral control surface positions are set.

 IMPORTANT: Remove the bind plug to prevent the system from entering bind mode the next

time the power is turned on.

SmartSafe™Failsafe

The AR7600 features SmartSafe failsafe. SmartSafe is ideal for most types of aircraft. With

SmartSafe, when signal is lost the throttle channel only is driven to its preset failsafe position

(normally low throttle) while all other channels hold last command.

 •Preventsunintentionalelectricmotorresponseonstart-up.

 •Eliminatesthepossibilityofover-drivingservosonstart-upbystoringpresetfailsafe

positions.

 •Establisheslow-throttlefailsafeandmaintainslast-commandedcontrolsurfacepositionif

the RF signal is lost.

ReceiverPowerOnly

•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.

•Allotherchannelsaredriventotheirpresetfailsafe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SmartSafedrivesthethrottle

servo only to its preset failsafe position (low throttle) that was set during binding.

 •Allotherchannelsholdtheirlastcommandedposition.Whenthesignalisregained,the

system immediately (less than 4ms) regains control.

PluggingintheLeads

Plug the servo leads into the appropriate servo ports in the receiver noting the polarity of the

servo connector.

RedLEDHoldIndicator

The AR7600 features a red LED that indicates the number of holds that have occurred since

the receiver was last powered on. The LED will ﬂash the number of holds then pause (e.g., ﬂash,

ﬂash, ﬂash, pause, ﬂash, ﬂash, ﬂash, pause indicates three holds occurred since the receiver

waslastturnedon).Notethatholdsareresettozerowhenthereceiveristurnedoff.During

the ﬁrst ﬂights of a new airplane, it’s recommended to check the red LED hold indicator. If it’s

ashing,it’simportanttooptimizetheinstallation(moveorrepositionantennas)untilnohold

occurs. On later ﬂights, the LED Hold Indicator can be used to conﬁrm RF link performance.

RangeTesting

Before each ﬂying session and especially with a new model, it is important to perform a range

check. All Spektrum aircraft transmitters incorporate a range testing system which, when

activated, reduces the output power, allowing a range check.

1. With the model restrained on the ground, stand 30 paces (approx. 90 feet/28 meters) away

from the model.

2. Face the model with the transmitter in your normal ﬂying position and place your

transmitter into range check mode.

3. You should have total control of the model with the button depressed at 30 paces (90

feet/28 meters).

4. If control issues exist, call the Product Support Team in the U.S. at 1-877-504-0233 for

further assistance. In the UK or Germany use one of the following contacts.

European Union: +44 (0) 1279 641 097 (United Kingdom)

oremailsales@horizonhobby.co.uk

+49 4121 46199 66 (Germany)

oremailservice@horizonhobby.de

AdvancedRangeTesting

For sophisticated models that have signiﬁcant conductive material in them, the advanced range

test using a ﬂight log is recommended. The advanced range check will conﬁrm that the internal

and remote receivers are operating optimally and that the installation (position of the receivers)

isoptimizedforthespecicaircraft.ThisAdvancedRangeCheckallowstheRFperformanceof

eachreceivertobeevaluatedandtooptimizethelocationsoftheremotereceiver.

AdvancedRangeTest

1 Plug a Flight Log (SPM9540 - optional) into the Batt/Data port on the AR7600 and turn on

the system (Tx and Rx).

2. Advance the Flight Log until F-frame losses are displayed by pressing the button on the

Flight Log.

3. Have a helper hold your aircraft while observing the Flight Log data.

4. Standing 30 paces away from the model, face the model with the transmitter in your

normal ﬂying position and put your transmitter into range test mode. This causes reduced

power output from the transmitter.

5. Have your helper position the model in various orientations (nose up, nose down, nose

toward the Tx, nose away from the Tx, etc.) while your helper watches the Flight Log noting

any correlation between the aircraft’s orientation and frame losses. Do this for 1 minute.

The timer on the transmitter can be used here.

ReceiverPowerSystemRequirements

Inadequate power systems that are unable to provide the necessary minimum voltage to the

receiver during ﬂight 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:

•Receiverbatterypack(numberofcells,capacity,celltype,stateofcharge)

•TheESC’scapabilitytodelivercurrenttothereceiverinelectricaircraft

•Theswitchharness,batteryleads,servoleads,regulatorsetc.

The AR7600 has a minimum operational voltage of 3.5 volts; it is highly recommended the

power system be tested per the guidelines below and in the Flight Log section.

RecommendedPowerSystemTestGuidelines

If a questionable power system is being used (e.g. small or old battery, ESC that may not have

a BEC that will support high-current draw, etc.), it is recommended that a voltmeter be used to

perform the following test.

Note: The Hangar 9 Digital Servo & Rx Current Meter (HAN172) or the Spektrum Flight Log

(SPM9540) are the perfect tools to perform the test below.

Plug the voltmeter into 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.

Note: The latest generations of Nickel-Metal Hydride batteries incorporate a new chemistry

mandated to be more environmentally friendly. These batteries when charged with peak

detection fast chargers have tendencies to false peak (not fully charge) repeatedly. These

include all brands of NiMH batteries. If using NiMH packs, be especially cautious when

charging, making absolutely sure that the battery is fully charged. It is recommended to

use a charger that can display total charge capacity. Note the number of mAh put into a

discharged pack to verify it has been charged to full capacity.

QuickConnectWithBrownoutDetection

Your AR7600 features QuickConnect with Brownout Detection.

•Shouldaninterruptionofpoweroccur(brownout),thesystemwillreconnectimmediatelywhen

power is restored (QuickConnect).

•TheLEDonthereceiverwillashslowlyindicatingapowerinterruption(brownout)hasoccurred.

•Brownoutscanbecausedbyaninadequatepowersupply(weakbatteryorregulator),aloose

connector, a bad switch, an inadequate BEC when using an electronic speed controller, etc.

•Brownoutsoccurwhenthereceivervoltagedropsbelow3.5voltsthusinterruptingcontrolasthe

servos and receiver require a minimum of 3.5 volts to operate.

HowQuickConnect™WithBrownoutDetectionWorks

•Whenthereceivervoltagedropsbelow3.5voltsthesystemdropsout(ceasestooperate).

•Whenpowerisrestoredthereceiverimmediatelyattemptstoreconnecttothelasttwo

frequencies that it was connected to.

•Ifthetwofrequenciesarepresent(thetransmitterwaslefton)thesystemreconnects

typically within one second.

QuickConnect with Brownout Detection is designed to allow you to ﬂy safely through most short

duration power interruptions, however, the root cause of these interruptions must be corrected

before the next ﬂight to prevent catastrophic safety issues.

Note: If a brownout occurs in ﬂight it is vital that the cause of the brownout be determined

and corrected.

FlightLog(SPM9540Optional)

The Flight Log is compatible with the AR7600. The Flight Log displays overall RF link

performance as well as the individual internal and external receiver link data. Additionally it

displays receiver voltage.

UsingtheFlightLog

After a ﬂight and before turning off the receiver or transmitter, plug the Flight Log into the Data

port on the AR7600. The screen will automatically display voltage e.g. 6v2= 6.2 volts.

Note: When the voltage reaches 4.8 volts or less, the screen will ﬂash indicating low voltage.

Press the button to display the following information:

A - Antenna fades on the internal antenna

B – Not used

L – Antenna fades on the external antenna

R – Not used

F - Frame loss

H - Holds

Antenna fades—represents the loss of a bit of information on that speciﬁc antenna.

Typically it’s normal to have as many as 50 to 100 antenna fades during a ﬂight. If any single

antenna experiences over 500 fades in a single ﬂight, the antenna should be repositioned in the

aircrafttooptimizetheRFlink.

Frame loss—represents simultaneous antenna fades on all attached receivers. If the RF link

is performing optimally, frame losses per ﬂight should be less than 20. A hold occurs when 45

consecutive frame losses occur. This takes about one second. If a hold occurs during a ﬂight, it’s

important to evaluate the system, moving the antennas to different locations and/or checking to

be sure the transmitter and receivers are all working correctly.

Note: A servo extension can be used to allow the Flight Log to be plugged in more

conveniently. On some models, the Flight Log can be plugged in, attached and left on

the model using double-sided tape. Mounting the Flight Log conveniently to the side

frame is common with helicopters.

ModelMatch

Some Spektrum and JR transmitters offer a patent pending feature called ModelMatch.

ModelMatch prevents the possibility of operating a model using the wrong model memory,

potentially preventing a crash. With ModelMatch each model memory has its own unique code

(GUID) and during the binding process the code is programmed into the receiver. Later, when the

system is turned on, the receiver will only connect to the transmitter if the corresponding model

memory is programmed on screen.

Note: If at any time you turn on the system and it fails to connect, check to be sure the

correct model memory is selected in the transmitter. Please note that the Spektrum

Aircraft Modules do not have ModelMatch.

30 paces (90 feet/28 meters)

Tips on Using Spektrum 2.4GHz

WhileyourDSMequipped2.4GHzsystemisintuitivetooperate,functioningnearlyidenticallyto

72MHzsystems,followingareafewcommonquestionsfromcustomers.

Q:WhichdoIturnonrst,thetransmitterorthereceiver?

A: If the receiver is turned off ﬁrst—all servos except for the throttle will be driven to their

preset failsafe positions set during binding. At this time the throttle channel doesn’t output a

pulse position preventing the arming of electronic speed controllers or in the case of an engine

powered aircraft the throttle servo remaining in its current position. When the transmitter is

thenturnedonthetransmitterscansthe2.4GHzbandandacquirestwoopenchannels.Then

the receiver that was previously bound to the transmitter scans the band and ﬁnds the GUID

(Globally Unique Identiﬁer code) stored during binding. The system then connects and operates

normally.

If the transmitter is turned on ﬁrst—thetransmitterscansthe2.4GHzbandandacquirestwo

open channels. When the receiver is then turned on for a short period (the time it takes to

connect) all servos except for the throttle are driven to their preset failsafe positions while the

throttlehasnooutputpulse.Thereceiverscansthe2.4GHzbandlookingforthepreviously

stored GUID and when it locates the speciﬁc GUID code and conﬁrms uncorrupted repeatable

packet information, the system connects and normal operation takes place. Typically this takes

2 to 6 seconds.

Q:Sometimesthesystemtakeslongertoconnectandsometimesitdoesn’tconnect

atall?

A: In order for the system to connect (after the receiver is bound) the receiver must receive

a large number of consecutive uninterrupted perfect packets from the transmitter in order to

connect. This process is purposely critical of the environment ensuring that it’s safe to ﬂy when

the system does connect. If the transmitter is too close to the receiver (less than 4 feet) or if the

transmitter is located near metal objects (metal TX case, the bed of a truck, the top of a metal

work bench, etc.) connection will take longer and in some cases connection will not occur as

thesystemisreceivingreected2.4GHzenergyfromitselfandisinterpretingthisasunfriendly

noise. Moving the system away from metal objects or moving the transmitter away from the

receiver and powering the system again will cause a connection to occur. This only happens

during the initial connection. Once connected the system is locked in and should a loss of signal

occur (failsafe) the system connects immediately (4ms) when signal is regained.

Q:I’veheardthattheDSMsystemislesstolerantoflowvoltage.Isthiscorrect?

A: All DSM receivers have an operational voltage range of 3.5 to 9.6 volts. With most systems

this is not a problem as in fact most servos cease to operate at around 3.8 volts. When using

multiple high-current draw servos with a single or inadequate battery/power source, heavy

momentary loads can cause the voltage to dip below this 3.5-volt threshold thus causing the

entire system (servos and receiver) to brown out. When the voltage drops below the low voltage

threshold (3.5 volts), the DSM receiver must reboot (go through the start-up process of scanning

the band and ﬁnding the transmitter) and this can take several seconds. Please read the receiver

power requirement section as this explains how to test for and prevent this occurrence.

Q:Sometimesmyreceiverlosesitsbindandwon’tconnectrequiringrebinding.What

happensifthebindislostinight?

A: The receiver will never lose its bind unless it’s instructed to. It’s important to understand that

during the binding process the receiver not only learns the GUID (code) of the transmitter but the

transmitter learns and stores the type of receiver that it’s bound to. If the transmitter is placed

into bind mode, the transmitter looks for the binding protocol signal from a receiver. If no signal

is present, the transmitter no longer has the correct information to connect to a speciﬁc

receiver and in essence the transmitter has been “unbound” from the receiver. We’ve had

several DX7 customers that use transmitter stands or trays that unknowingly depress the

bind button and the system is then turned on losing the necessary information to allow the

connection to take place. We’ve also had DX7 customers that didn’t fully understand the range

test process and pushed the bind button before turning on the transmitter also causing the

system to “lose its bind.”

Warranty Period

Exclusive Warranty- Horizon Hobby, Inc., (Horizon) warranties that the Products purchased (the “Product”)

will be free from defects in materials and workmanship for a period of 1 year from the date of purchase by

the Purchaser.

Limited Warranty

(a) This warranty is limited to the original Purchaser (“Purchaser”) and is not transferable. REPAIR

OR REPLACEMENT AS PROVIDED UNDER THIS WARRANTY IS THE EXCLUSIVE REMEDY OF THE

PURCHASER. This warranty covers only those Products purchased from an authorized Horizon dealer.

Third party transactions are not covered by this warranty. Proof of purchase is required for warranty claims.

Further, Horizon reserves the right to change or modify this warranty without notice and disclaims all other

warranties, express or implied.

(b) Limitations- HORIZON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED,

ABOUT NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE

PRODUCT. THE PURCHASER ACKNOWLEDGES THAT THEY ALONE HAVE DETERMINED THAT THE

PRODUCT WILL SUITABLY MEET THE REQUIREMENTS OF THE PURCHASER’S INTENDED USE.

repair or (ii) replace, any Product determined by Horizon to be defective. In the event of a defect, these are

the Purchaser’s exclusive remedies. Horizon reserves the right to inspect any and all equipment involved

in a warranty claim. Repair or replacement decisions are at the sole discretion of Horizon. This warranty

does not cover cosmetic damage or damage due to acts of God, accident, misuse, abuse, negligence,

commercial use, or modiﬁcation of or to any part of the Product. This warranty does not cover damage due

to improper installation, operation, maintenance, or attempted repair by anyone other than Horizon. Return

of any goods by Purchaser must be approved in writing by Horizon before shipment.

Damage Limits

HORIZON SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, LOSS OF

PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCT,

WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY.

Further, in no event shall the liability of Horizon exceed the individual price of the Product on which liability

is asserted. As Horizon has no control over use, setup, ﬁnal assembly, modiﬁcation or misuse, no liability

shall be assumed nor accepted for any resulting damage or injury. By the act of use, setup or assembly, the

user accepts all resulting liability.

If you as the Purchaser or user are not prepared to accept the liability associated with the use of this

Product, you are advised to return this Product immediately in new and unused condition to the place of

purchase.

Law: These Terms are governed by Illinois law (without regard to conﬂict of law principals).

Safety Precautions

This is a sophisticated hobby Product and not a toy. It must be operated with caution and common sense

and requires some basic mechanical ability. Failure to operate this Product in a safe and responsible

manner could result in injury or damage to the Product or other property. This Product is not intended

for use by children without direct adult supervision. The Product manual contains instructions for safety,

operation and maintenance. It is essential to read and follow all the instructions and warnings in the

manual, prior to assembly, setup or use, in order to operate correctly and avoid damage or injury.

Questions, Assistance, and Repairs

Your local hobby store and/or place of purchase cannot provide warranty support or repair. Once assembly,

setup or use of the Product has been started, you must contact Horizon directly. This will enable Horizon to

better answer your questions and service you in the event that you may need any assistance. For questions

or assistance, please direct your email to productsupport@horizonhobby.com, or call 877.504.0233 toll

free to speak to a Product Support representative.

Inspection or Repairs

If this Product needs to be inspected or repaired, please call for a Return Merchandise Authorization (RMA).

Pack the Product securely using a shipping carton. Please note that original boxes may be included, but

are not designed to withstand the rigors of shipping without additional protection. Ship via a carrier that

provides tracking and insurance for lost or damaged parcels, as Horizon is not responsible for merchandise

until it arrives and is accepted at our facility. A Service Repair Request is available at www.horizonhobby.

com on the “Support” tab. If you do not have internet access, please include a letter with your complete

name, street address, email address and phone number where you can be reached during business days,

Prnted 7/09 16190

FCC Information

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 received, including interference that may cause undesired operation.

Caution: Changes or modiﬁcations not expressly approved by the party responsible for

compliance could void the user’s authority to operate the equipment.

This product contains a radio transmitter with wireless technology which has been tested and found

to be compliant with the applicable regulations governing a radio transmitter in the 2.400GHz to

2.4835GHz frequency range.

Compliance Information for the European Union

Instructions for Disposal of WEEE by Users in the

European Union

This product must not be disposed of with other waste. Instead, it is the user’s responsibility

to dispose of their waste equipment by handing it over to a designated collection point for the

recycling of waste electrical and electronic equipment. The separate collection and recycling of your

waste equipment at the time of disposal will help to conserve natural resources and ensure that it is

recycled in a manner that protects human health and the environment. For more information about

where you can drop off your waste equipment for recycling, please contact your local city ofﬁce,

your household waste disposal service or where you purchased the product.

Declaration of Conformity

(in accordance with ISO/IEC 17050-1)

No. HH20081022

Product(s): Spektrum AR7600 Receiver

Item Number(s): SPMAR7600

Equipment class: 1

The objects of declaration described above are in conformity with the requirements of the

speciﬁcations listed below, following the provisions of the European R&TTE directive 1999/5/EC:

EN 300-328 v1.7.1 ERM requirements for wideband transmission systems

operating in the 2.4 GHz ISM band

EN 301 489-1 v.1.6.1 General EMC requirements for Radio equipment

EN 301 489-17 v.1.2.1

Signed for and on behalf of:

Horizon Hobby, Inc.

Champaign, IL USA

Oct 22, 2008

US patent number 7,391,320. Other patents pending.

DSM and DSM2 are trademarks or registered trademarks of Horizon Hobby, Inc. The Spektrum trademark is used with

permission of Bachmann Industries, Inc. Spektrum radios and accessories are exclusively available from Horizon Hobby, Inc.

your RMA number, a list of the included items, method of payment for any non-warranty expenses and a

brief summary of the problem. Your original sales receipt must also be included for warranty consideration.

Be sure your name, address, and RMA number are clearly written on the outside of the shipping carton.

Warranty Inspection and Repairs

To receive warranty service, you must include your original sales receipt verifying the proof-of-purchase

date. Provided warranty conditions have been met, your Product will be repaired or replaced free of charge.

Repair or replacement decisions are at the sole discretion of Horizon Hobby.

Non-Warranty Repairs

Should your repair not be covered by warranty the repair will be completed and payment will be required

without notiﬁcation or estimate of the expense unless the expense exceeds 50% of the retail purchase cost.

By submitting the item for repair you are agreeing to payment of the repair without notiﬁcation. Repair

estimates are available upon request. You must include this request with your repair. Non-warranty repair

estimates will be billed a minimum of ½ hour of labor. In addition you will be billed for return freight.

Please advise us of your preferred method of payment. Horizon accepts money orders and cashiers checks,

as well as Visa, MasterCard, American Express, and Discover cards. If you choose to pay by credit card,

please include your credit card number and expiration date. Any repair left unpaid or unclaimed after 90

days will be considered abandoned and will be disposed of accordingly. Please note: non-warranty repair is

only available on electronics and model engines.

Electronics and engines requiring inspection or repair should be shipped to the following address:

Horizon Service Center

4105 Fieldstone Road

Champaign, Illinois 61822 USA

All other Products requiring warranty inspection or repair should be shipped to the following address:

Horizon Product Support

4105 Fieldstone Road

Champaign, Illinois 61822USA

Please call 877-504-0233 or e-mail us at productsupport@horizonhobby.com with any questions or

concerns regarding this product or warranty.

European Union:

Electronics and engines requiring inspection or repair should be shipped to one of the following addresses:

Horizon Hobby UK

Units 1-4 Ployters Rd

Staple Tye, Harlow

Essex CM18 7NS

United Kingdom

Please call +44 (0) 1279 641 097 or email sales@horizonhobby.co.uk with any questions or concerns

regarding this product or warranty.

Horizon Technischer Service

Hamburger Str. 10

25335 Elmshorn

Germany

Please call +49 4121 46199 66 or email [email protected] with any questions or concerns

regarding this product or warranty.

Steven A. Hall

Vice President

International Operations and Risk Management

Horizon Hobby, Inc.

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