Applicable systems: Futaba FASSTest-2.4GHz system transmitter 

R7008SB FASSTest-2.4GHz Bidirectional Communication System

S.BUS2 / S.BUS Port and 8 Channels for Conventional System Receiver

Compliance Information Statement 

(for U.S.A.)

This device, trade name Futaba Corporation of America, model number 

R7008SB, complies with part15 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.

(3) This module meets the requirements for a mobile device that may be used 

at separation distances of more than 20cm from human body.

To meet the RF exposure requirements of the FCC this device shall not be colocated with another transmitting device.

The responsible party of this device compliance is:

Futaba Service Center

3002 N Apollo Drive Suite 1, Champaign, IL 61822 U.S.A.

TEL (217)398-8970 or E-mail: support@futaba-rc.com (Support)

R7008SB Specifications

FASSTest-2.4GHz system(18CH/12CH mode)/S.BUS2 and S.BUS port 

and 8 channels for conventional system receiver

• Dual antenna diversity

• Size: 0.98 x 1.86 x 0.56 in. (24.9 x 47.3 x 14.3 mm)

• Weight: 0.38 oz. (10.9g)

• Power requirement: 3.7V to 7.4V(Voltage range: 3.5 to 8.4V)

• Battery F/S Voltage: It sets up with a transmitter

• Extra Voltage port: 0 ~ 70V DC

* Be sure that when using ESCs regulated output the capacity of the ESC must 

meet your usage condition.

Thank you for purchasing a Futaba R7008SB FASSTest-2.4GHz compatible receiver. The R7008SB receiver features bi-directional communication 

with a FASSTest Futaba transmitter using the S.Bus2 port. Using the S.Bus2 port an impressive array of telemetry sensors may be utilized. It also 

includes both standard PWM output ports and S.Bus output ports.

LED Indication

Green Red Status

Off Solid No signal reception

Solid Off Receiving signals

Alternate blink Unrecoverable error (EEPROM, etc.)

(Antenna installation)

90 ̊

Please refer the table below for LED status vs 

receiver's condition.

1M23N17454

S.BUS2

port

S.BUS port (8/SB)

(S.BUS2) R7008SB

Terminal box

S.BUS Servo

S.BUS Gyro

HUB

HUB

HUB

HUB

Extra Voltage

Port

Link/Mode switch

Antenna

LED

Servo for conventional

system

Channel1 output

Channel8 output

Temperature

Sensor

RPM

Sensor

Voltage

Sensor

Voltage

Sensor

Altitude

Sensor

Altitude

Sensor

S.BUS2 Tool

Battery to 7/B

(It is not used for a link.)

+

-

It connects with the 

battery for power, etc.

External voltage input 

cable of an option is 

used. The voltage of 

the battery can be 

displayed with a 

transmitter. 

Usage precaution

•	Analog servos cannot be used with the R7008SB in the FASSTest

12CH mode.

•	The R7008SB receiver can only be used with FASSTest capable

transmitters.

•	Don't connect to Extra Voltage before turning on a receiver.

 WARNING

 Changes or modification not expressly approved by the

party responsible for compliance could void the user’s

authority to operate the equipment.

 The R7008SB receiver should be protected from vibration

by foam rubber, Velcro or similar mounting methods. 

Protect from moisture.

 Keep away from conductive materials to avoid short circuits.

Antenna installation precaution

 Do not cut or bundle the receiver antenna wire. 

 

 Do not bend the coaxial cable. It causes damage.

 The antennas must be mounted in such a way to assure

they are strain relieved. 

 Keep the antenna as far away from the motor, ESC and

other noise sources as you possibly can.

 Be sure that the two antennas are placed at 90 degrees to

each other.

•	The R7008SB has two antennas. In order to maximize signal reception

and promote safe modeling Futaba has adopted a diversity antenna

system. This allows the receiver to obtain RF signals on both antennas

and fly problem-free.

Antenna installation for carbon fuselage

 WARNING

 You must leave 30mm at the tip of the antenna fully exposed. The exposed antenna should be secured so that it

cannot move around or back inside of your aircraft.

(Typical installation)
What is S.BUS?

Unlike conventional radio control systems, the S.BUS system 

uses data communication to transmit control signals from a 

receiver to a servo, gyro, or other S.BUS compatible device. 

This data includes commands such as “move the channel 3 

servo to 15 degrees, move the channel 5 servo to 30 degrees” 

to multiple devices. The S.BUS devices execute only those 

commands for their own set channel. For this reason, it can 

be used by connecting multiple servos to the same signal 

line.

 [Connection by S.BUS system]

S.BUS hub S.BUS hub S.BUS output

S.BUS Ch output/

Battery terminal

R7008SB

Battery S.BUS servo

Conventional

servo

1ch 3ch

2ch 5ch

4ch

* Set the channel of S.BUS servos by using an SBC-1 channel changer, CIU-2 USB serial interface or the programming software resident in the 18MZ transmitter.

* Can also be used together with conventional servos. However, conventional servos cannot be used by the S.BUS output.

* When using servos with a remote battery pack, use S.BUS Hub with Cable (2-way/remote battery pack use).

Please refer to the instruction manual of S.BUS Hub with Cable (2-way/remote battery pack use) for the connection method.

 WARNING

 Do not perform the linking procedure while the motor's

main wire connected or the engine is operating as it may

result in serious injury.

 When the linking is complete, please cycle the receiver

power and ensure the receiver is properly linked to the

transmitter.

 Please power up your system in this order. Transmitter

first, followed by the receiver. 

FUTABA CORPORATION

1080 Yabutsuka, Chosei-mura, Chosei-gun, Chiba-ken, 299-4395, Japan

Phone: +81 475 32 6982, Facsimile: +81 475 32 6983

Link to the transmitter

Easy Link ID allows FASSTest receivers to link to compatible 

transmitter without pressing the link button on the receiver. 

1 Bring the transmitter and the receiver close to each other,

within 20 inches (half meter).

2 Turn on the transmitter. Place the transmitter into the receiver

linking mode.

3 Turn on the receiver.

4 The receiver will wait for the linking process to begin for 2

seconds. Following that it will return to the normal operation

mode.

5 When the LED of the receiver changes from blinking red to

solid green, linking is complete.

 (A link waiting state is ended in 1 second.)

•	Refer to the transmitters operation manual for complete details on how to place the

transmitter into the linking mode.

•	If there are many FASSTest systems turned on in close proximity, your receiver

might have difficulty establishing a link to your transmitter. This is a rare occurrence.

However, should another FASSTest transmitter/receiver be linking at the same time,

your receiver could link to the wrong transmitter. This is very dangerous if you do

not notice this situation. In order to avoid the problem,we strongly recommend you

to double check whether your receiver is really under control by your transmitter.

• If the System Type of the transmitter is changed, the receiver will need to be relinked to the transmitter.

Channel Modes

The R7008SB is capable of changing its channel allocations as described 

in the table below. This is especially important when using the receiver 

in a dual receiver mode. See your transmitter operation manual for 

complete details on operating in the dual receiver mode. 

1 Press and hold down the Link/Mode button on the R7008SB

receiver.

2 Turn the receiver on while holding down the Link/Mode button.

After power up, the button can be released.

3 The LED should now be blinking red in one of the patterns

described by the chart below.

4 Each press of the Mode/Link button advances the receiver to

the next mode.

5 When you reach the mode that you wish to operate in, press

and hold the Mode/Link button for more than 2 seconds.

6 Once locked into the correct mode the LED will change to a

solid color.

7 Please cycle the receiver(s) power off and back on again after

changing the Channel Mode.

FASSTest

FASSTest is a bidirectional communication system between the R7008SB 

receiver and FASSTest capable transmitters. Multiple optional telemetry 

sensors may be connected to the S.BUS2 on the receiver and that data is 

in turn displayed on the transmitter.

*Please see your transmitters operation manual to configure transmitter to

operate with telemetry sensors.

S.BUS2

S.BUS2 extends S.BUS and supports bidirectional communication. 

Sensors are connected to the S.BUS2 port.

*Only S.Bus2 capable devices may be connected to the S.Bus2 port. 

Standard S.Bus servos and gyros should not be connected to the S.Bus2

port.

 If the R7008SB receiver was previously linked to another

transmitter, make sure that transmitter is not operating

while linking the receiver to the new transmitter.

Output 

connector

Channel

Mode A

1 ~ 8CH

Mode B

1 ~ 7CH

Mode C

9 ~ 16CH

Mode D

9 ~ 15CH

1 1 1 9 9

2 2 2 10 10

3 3 3 11 11

4 4 4 12 12

5 5 5 13 13

6 6 6 14 14

7/B 7 7 15 15

8/SB 8 S.BUS 16 S.BUS

Red LED 

blink 1 time 2 time 3 time 4 time

R7008SB CH Mode table

 WARNING

 Turn on the power in transmitter → receiver order. In addition, always check the operation of all the servos before flight. 

 Do not insert or remove the servo connector while the receiver power is ON.

Since the S.BUS servo switches the operation mode automatically according to the type of signal (S.BUS signal/PWM signal) from the receiver, if the connector is 

inserted or removed while the power is ON, an S.BUS connected servo will be erroneously recognized and may stop.

©FUTABA CORPORATION 2011, 12 (1)