Futaba R7308SB Receiver

With the R7308SB, Futaba offers a particularly light and small receiver with telemetry and the new Dual RX function. Its narrow design makes it ideal for use in narrow fuselages. But also on radio controlled helicopters without fuselage, where the space for electronics is reduced.

The R7308SB differs from the R7208SB by the use of a double sleeve antenna. Sleeve antennas benefit from a specific dipole design to optimize both the reception and transmission of radio frequency signals. Finally, they improve the omnidirectional function of the Futaba double antenna diversity.

When the R7308SB is operated in Dual RX mode, a second S.BUS/S.BUS2 receiver is connected to the R7308SB and operated in parallel.
This receiver redundancy further increases model reliability: In case of a problem on the main receiver, the system switches immediatly to the second receiver.
An additional S.BUS/S.BUS2 receiver is required to operate the R7308SB in dual link mode.

This Futaba receiver features antenna diversity. This means the 7308SB constantly compares which antenna has the better signal and switches to it in a flash.

Analog or digital servos can be connected to ports 1 to 8. To enable shorter response times, the servo output signal for digital servos can be changed to 6.3 ms (instead of 16 ms for analog servos). The PWM ports can be switched so that channels 9 to 18 can be used alternatively at the ports. Or the ports can be used as additional S.BUS2 ports.

Up to 18 programmable S.BUS servos or other S.BUS components such as gyros, flybarless systems or governors can be connected to the S.BUS port. All S.BUS servos are digitally addressed and can be connected with a single servo line (3 wires). For instance, if 4 servos are fitted in a wing, only one servo cable goes into the wing. This keeps the complete wiring very simple and clear.
If analog servos are to be used on the S.BUS, they must be connected using a PWM adapter.

S.BUS2 sensors can be connected to the S.BUS2 ports. They transmit up to 32 telemetry data sets. The receiver has an integrated telemetry transmitter that transmits the data to the transmitter (FASSTest only). This allows the measured values to be displayed or acoustically output at the transmitter. In addition, the receiver automatically always transmits the voltage of the receiver power supply (voltage sensor is integrated) and the signal strength.

The receiver supports HV (High Voltage 8.4 Volt) and can be powered directly from a 2s LiPo battery. Always make sure that the connected servos are also designed for HV !

Specifications:

Transmission type: FASSTest
Frequency range: 2.4 GHz
Channels: 8 PWM / 18 S.BUS
Transmit power: 100 mW EIRP
S.BUS Port: S.BUS / S.BUS2
Voltage range: 3.7 - 8.4 V Hi-Voltage (HV)
Weight: 11 g
Dimensions: 24.9 x 38.8 x 14.3 mm
Dual RX Link
Telemetry with S.BUS2 (32 channels)
PWM channels: 1-8 or 9-16 selectable
Antenna diversity (Sleeve antenna)
Pulse switching digital servos