FUTABA R3204SB T-FHSS Air Receiver

A small four-channel Futaba T-FHSS Air-2.4GHz transmission system telemetry receiver with a pair of full-band differential antennas. It is designed for use in models of all categories, thanks to its compact dimensions, light weight, connectors located in the longitudinal axis and the ability to operate with a 1S LiPo (3.7 V) power supply, it is also suitable for very small and lightweight models. The R3204SB provides 4 classic PWM channel outputs and an S.BUS2 port for bidirectional communication, allowing connection of S.BUS2 servos and telemetry sensors. It supports the "model ID" function. The receiver's operating states are indicated by an LED.

Transmission system

Futaba T-FHSS Air-2.4GHz for flying models. Not compatible with the T-FHSS Surface 2.4GHz transmission system used in Futaba RC kits for RC cars, other ground vehicles and boats.

Power supply

3.7-7.4 V (nominal voltage), 3.5-8.4 V operation - that is, for example, 4-6 NiMH batteries, 1-2S LiPo/Li-ion batteries, 2S LiFe batteries, BEC power stabilizers in a given voltage range.

Antenna

The receiver is equipped with a pair of differential antennas to maximize signal reception regardless of the relative position of the model and transmitter. They should be mounted on the model with a mutual orientation of 90°.

Receiver outputs

The receiver allows you to connect standard Futaba connectors (with a tab) and UNI connectors (=JR/Graupner, Hitec) without a side projection (pay attention to polarity).

• Channel outputs (PWM): The R3204SB offers 4 classic PWM channel outputs, which can be used simultaneously with the S.BUS2 serial bus
• S.BUS2: The S.BUS2 socket allows connection of servos, gyroscopes and other compatible S.BUS2 devices, as well as connection of Futaba telemetry sensors, whose data can be displayed on the transmitter.

Telemetry

The R3204SB transmits receiver voltage data to the transmitter without connecting any sensors.
The R3204SB allows the use of all telemetry sensors
Futaba and other sensors compatible with the S.BUS2 bus system with bidirectional communication.

What is S.BUS2/S.BUS:

S.BUS - Futaba's serial bus with unidirectional communication that allows control of servos, controllers, switches, gyroscopes and other compatible RC devices connected to a single output port of the S.BUS receiver.
S.BUS2 - Futaba's serial bus for bidirectional communication allowing (like 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 you to connect telemetry sensors and send data from them through the receiver for display on the transmitter; from some servos, the S.BUS2 can send information about operating current, temperature or servo output lever angle to the transmitter.
Unlike classic RC kits, the S.BUS(2) system uses serial data communication to send control signals from the receiver to the servo, gyro or other device. This data includes commands such as "move channel 3 servo by 15 degrees, move channel 5 servo by 30 degrees" for many devices. S.BUS(2) devices only execute commands belonging to their own set channel. For this reason, it is possible to connect several servos to the same signal cable, setting and controlling them individually as needed. The servo identification code (ID) is used for this purpose. You can find the ID on a sticker on the servo box.

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

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

Technical specifications:

• modulation: T-FHSS Air - 2.4 GHz
• power supply (rated voltage): 4.8 V, 6 V, 7.2 V, 7.4 V, 3.7 V, 6.6 V
• number of channels: 4
• output: S-BUS2
• dimensions: 41.4 x 18 x 9.9 mm
• weight: 4.8 g

*Follow the instruction manual included with the product.