(Auto Detection),
For EP Car models
Built-in antenna
4-channel receiver
NEVER use dry batteries for the
power supply of the R204GF-E as
they may cause difficulties.
NEVER use the R204GF-E in GP
Thank you for purchasing the R204GF-E receiver.
Link Procedure
The R204GF-E is designed for use with the Futaba
S-FHSS or FHSS system transmitter. The S-FHSS
system has two(2) operation mode as shown below.
Each transmitter has an individually assigned,
unique ID code. In order to start operation, the
receiver must be linked with the ID code of the
transmitter with which it is being paired. Once the
link is made, the ID code is stored in the receiver
and no further linking is necessary unless the
receiver is to be used with another transmitter.
•Normal mode/High Speed mode
The "Normal mode" accepts any type of servos or the
peripherals as the frame rate of the output is 13.6ms.
The "High Speed mode" only accepts the digital
servos, including BLS series, and most peripheral
equipments such as the brushless ESCs. The frame rate
of the outputs is 6.8ms. However, there is a transmitter
that cannot correspond, to high speed mode.
Please pay special attention to the information
contained within this manual and transmitter's manual
in order to have a pleasant running experience.
1 Place the transmitter and the receiver close
to each other within half (0.5) meter
2 Turn on the transmitter and the receiver.
3 Push and hold the Link switch on the
4 When the link is complete, the LED on the
receiver changes to solid green.
•Built-in antenna
The R204GF-E receiver is designed to be used only
for EP Car models. Due to the special design of the
R204GF-E, we cannot recommend its use in other
types of models (gas poweredmodels.)
the linking is done, please cycle
receiver power and check if the receiver
*Please refer to the table below for LED status
and receiver condition.
to be linked is really under the control by the
transmitter to be linked.
No signal reception
Receiving signals
Receiving signals, but ID
is unmatched.
Do not perform the linking procedure
motor's main wire connected or
Power On, when F/S
sets it.
•The R204GF-E is compatible with the
S-FHSS or FHSS system transmitters.
LED: Off
LED: Blink
LED: Early
Blink the first
one second
with the engine operating as it may result in
serious injury.
R204GF-E Specifications:
The R204GF-E is compatible with the S-FHSS or FHSS
system transmitters .
(S-FHSS/FHSS system, 4-channel receiver)
•Receiving on 2.4GHz band
•System: S-FHSS/FHSS system (auto detection)
At S-FHSS Normal/High speed mode (auto detection)
• Receiving Range : 70m (230ft.)(at the best conditions)
•Operating voltage(Typ.): 4.8V-7.4V(shared with servo)
• F/S and Battery F/S function: The operation channels differ according to the transmitter used. However,Battery
F/S doesn't function when it is used with FHSS and F/S becomes only CH2.
• Battery F/S voltage: 3.8V
•Current drain: 30mA (at no signal)
•Size: 1.38x0.91x0.35” (35.1x23.2x9mm)
•Weight: 0.21oz. (6g)
*The Battery F/S voltage is set for 4-cell NiCd/NiMH battery. Battery F/S function doesn't work
properly when other type battery is used.
*Futaba S-FHSS/FHSS system does not work with current Futaba FASST system.
*If there are many S-FHSS/FHSS systems turned
on around your receiver, it might not link to your
transmitter. In this case, even if the receiver’s
LED stays solid green, unfor tunately the
receiver might have established a link to one of
the other transmitters. 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
controlled by your transmitter by giving throttle
input, etc. and then checking servo response.
Link switch
Ch4 output/Battery terminal (B)
Ch output (1 to 3)
Compliance Information Statement (for U.S.A.)
Usage condition on "High Speed mode"
using the high-speed mode, use a Futaba
digital servo (including brushless servo). Analog
servos cannot be used.
•The use of analog servos may cause servo trouble.
Operating Precautions:
Once the R204GF-E detects the
S-FHSS normal mode, S-FHSS high
speed mode or FHSS mode, the
detected mode is locked as long
as the power is ON. When need
to change the mode, please cycle
This device, trade name Futaba Corporation of America, model number R204GF-E, 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 undesiredoperation.
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)
1080 Yabutsuka, Chosei-mura, Chosei-gun, Chiba-ken, 299-4395, Japan
Phone: +81 475 32 6982, Facsimile: +81 475 32 6983
2011, 11 (1)