Futaba R3008SB T-FHSS 8k receiver

Eight-channel telemetry receiver Futaba of the T-FHSS Air-2.4GHz transmission system with a pair of full-range diversity antennas. It is intended for general use in models of all categories; thanks to its compact dimensions, low weight and connectors inserted in the longitudinal axis, it is also suitable for models with a slim fuselage, such as F3B, F3J gliders, etc. Thanks to optional channel modes and dual receiver operation, it will also serve well in models requiring a large number of channels - the R3008SB pair provides up to 16 standard PWM channel outputs or 14-15 PWM outputs and 1-2 S.BUS serial outputs. In addition, the receiver is equipped with an S.BUS2 port for two-way communication allowing the connection of S.BUS2 servos, telemetry sensors and other compatible devices. The operating states of the receiver are indicated by an LED indicator.

Transmission system

Futaba T-FHSS Air-2.4GHz for flying models. It is not compatible with the T-FHSS Surface 2.4GHz transmission system used by Futaba RC kits for RC cars, other ground equipment and boats.

Power supply

4.8-7.4 V (nominal voltage) - ie eg 4-6 cells NiMH, 2S LiPo, LiFe, Li-ion batteries, BEC power stabilizers in the given voltage range.

Antenna

The receiver is equipped with a pair of diversity antennas in order to maximize signal reception regardless of the relative position of the model and the transmitter. These must be fastened in the model with a mutual orientation of 90 °.

Receiver outputs, channel modes

The receiver is equipped with sockets for standard Futaba connectors (with protrusion), into which it is of course possible to insert UNI connectors (= JR / Graupner, Hitec) without a side protrusion.

Channel outputs (PWM / S.BUS): The R3008SB allows you to change the channel assignment as shown in the table below allowing the use of a combination of conventional PWM outputs and S.BUS output or dual receiver operation (requires the use of a Futaba transmitter enabling dual receiver operation) offer up to 16 classic PWM channels or 14-15 PWM outputs and 1-2 SB US serial outputs. The channel modes are selected using the button on the receiver in a special setting mode - in normal operating mode, the channel modes cannot be changed.

S.BUS2: The S.BUS2 socket allows the connection of S.BUS2 servos, gyroscopes and other compatible devices and the connection of Futaba telemetry sensors, the data of which can be displayed on the transmitter.

EXT (Extra Voltage): Socket for measuring the voltage of an external (eg drive) battery connected with a CA-RVIN-700 cable (sold separately) in the range 0-70 V.

Telemetry

The R3008SB transmits to the transmitter the supply voltage of the receiver and the voltage measured at the EXT input without the need to connect any sensors.

The R3008SB allows the use of all Futaba telemetry sensors and other S.BUS2-compatible sensors with bidirectional communication.

The receiver set includes: R3008SB receiver, operating instructions.

What Is S.BUS2 / S.BUS

• S.BUS - Futaba serial bus with one-way communication enabling control of servos, controllers, switches, gyroscopes and other compatible RC devices connected to a single SB output port US receivers.
• S.BUS2 - Futaba serial bus for bidirectional communication enabling (as S.BUS) control of servos, controllers, switches, gyroscopes and other compatible RC devices connected to a single output / input port of the S.BUS2 receiver. In addition, it allows the connection of telemetry sensors and the transmission of data from them via a receiver for display on the transmitter; from some S.BUS2 servos can transmit information about the operating current, temperature or angle of the servo output lever to the transmitter.

Unlike conventional RC S.BUS (2) kits, the system uses serial data communication to transmit control signals from the receiver to a servo, gyro or other device. This data contains commands such as "move servo channel 3 to 15 degrees, move servo channel 5 to 30 degrees" for multiple devices. S.BUS (2) devices only execute commands corresponding to their own set channel. For this reason, it is possible to connect several servos to the same signal cable, while setting and controlling them individually as needed. The servo identification code (ID) is used for this. You can find the ID on the sticker on the servo box.

The S.BUS2 servo can be connected to both S.BUS2 and S.BUS ports of the receiver. Its function is given by setting the channel in the servo memory (it is performed using the programming interface of the Futaba transmitter, SBC-1 programmer or CIU-3 USB interface with PC program S-Link - for some servos the channel can be set only with the transmitter).

The S.BUS or S.BUS2 servo connected to the channel output of the classic receiver (PWM) works like a classic servo. Its movement is given by a signal in the channel of the receiver to which it is connected. The settings of the programmable servo functions remain valid.