Radiomaster ER6G ExpressLRS Receiver

Thank you for purchasing the Radiomaster ER6G ExpressLRS receiver. The ER6G receiver is based on the revolutionary ExpressLRS system. It offers high performance, high reliability, flexible configuration, fast response speed, and ultra-long range. The ER6G Receiver has the same functionality as the ER6GV, but without a built-in Vario, making it suitable for competitions that prohibit the use of a Vario or for users who do not need a vario on their receiver.

Important Notes

Recommended ELRS LUA Settings:
- Standard servos: Packet Rate: 100Hz Full, Telem Ratio: Std (1:32), Switch Mode: 8ch
- Performance servos: Packet Rate: 333Hz Full, Telem Ratio: Std (1:128), Switch Mode: 8ch
The maximum input voltage for the EXT-V (external voltage input) telemetry reading is 35V. Do not exceed 35V, or the receiver will be damaged.
The EXT-V input is accessed via the EXT-V solder pad on the PCB. A wire must be soldered to this pad and connected to the positive wire of the battery or ESC. If no EXT-V power source is found, the ER6G will default to reading the voltage on the receiver pins. Only one voltage input can be used at any given time.
Ensure the ESC BEC's power supply current matches the servo's power consumption requirements. For high-voltage and high-torque servos, a 25V or 7.4V battery for direct power supply or a suitable high-current UBEC is recommended.
Telemetry voltage calibration is required on your radio. Navigate to the telemetry page, locate the RxBt sensor, edit its settings, and adjust the offset until the displayed reading matches the actual battery voltage. Adjust the ratio if there is a significant difference.
Channel 6 on the receiver must not be used as a power input channel; it can be used as a servo output channel. Power from an ESC or receiver battery must only be applied to Channels 1 to 5.
ExpressLRS requires CH5 to set the Arm state of the RF module in your radio. It is recommended to assign CH5 to a switch (e.g., throttle cut switch) for benefits like dynamic power. Different channels can be assigned to the receiver's CH5 output using the ExpressLRS LUA or Wifi WebUI.

For more information on the importance of setting up arming, please visit https://www.expresslrs.org/.

Product Overview

The Radiomaster ER6G receiver is designed for glider pilots needing a compact and slim receiver. It supports up to 6 servos and features built-in receiver and flight battery telemetry, automatically detecting the voltage input. The ER6G has dual antennas with telemetry power up to 50mw. It does not have a built-in altimeter, making it suitable for competitions that prohibit vario usage. The ER6G can be powered by a 1S Lipo receiver battery.

Product Features

Power supply: DC 3.5 - 8.4V
Antenna type: 15cm high sensitivity antenna
Wireless protocol: ExpressLRS 3.2 pre-installed
Output channel: 6CH PWM
Return power: maximum 50mw (LUA Adjustable)
Battery voltage detection range: DC 4.0 - 35V
Weight: 5.0 grams
Dimensions: 42*13*8mm

Firmware

Device Category: Radiomaster 2.4Ghz
Device: Radiomaster ER6G

Telemetry Example

The following shows an example of telemetry data that can be displayed on your radio:

Parameter	Value	Unit	Type	Source	ID	Precision	Ratio
TRSS	-28dB			Internal
TQIY	100%
TSNR	15dB
RxBt	7.00V	V	Custom	0008	1	0.0	0.3
Curr	0.0A	A
Cap	0mAh	mAh
Bat.%	0%	%

Wiring Diagram

The ER6G receiver features standard PWM output channels. The EXT-V input allows for external voltage monitoring. A 3-pin connector for optional components may require soldering.

Standard Connection:

CH1: CH1
CH2: CH2
CH3: CH3
CH4: CH4
CH5: CH7 (ExpressLRS Arming)
CH6: CH6

External Voltage Input (EXT-V): Connect to battery or ESC positive wire (DC 3.5 - 8.4V).

Binding Methods

Traditional Binding

Power on the receiver. The LED will double blink, indicating bind mode. If not, hold the boot button for 10 seconds to reset.
Open the ExpressLRS LUA on your remote controller, select [BIND], and confirm.
A steady LED indicates successful binding.

Note: To bind a second time or to another radio, power cycle the receiver 3 times. On the third cycle, the LED will double blink. If this fails, reset the receiver by holding the boot button for 10 seconds.

WARNING: Using the reset button erases all previous settings.

Binding Phrase Method

Open the ExpressLRS LUA, navigate to the Wifi Connectivity page, and enable Wifi. Connect to your radio's Wi-Fi (see TX Wifi notes below). Open the WebUI (http://10.0.0.1/) and enter a unique bind phrase. Save and reboot.
Power up the receiver and wait 60 seconds for the LED to blink rapidly (Wi-Fi mode). Connect your phone, tablet, or PC to the receiver's Wi-Fi (see RX Wifi notes below). Open the WebUI (http://10.0.0.1/) and enter the same bind phrase used for the transmitter. Save and reboot. The transmitter and receiver will automatically bind when they share the same bind phrase.

TX Wifi Notes:
Network Name: ExpressLRS TX
Password: expresslrs

RX Wifi Notes:
Network Name: ExpressLRS RX
Password: expresslrs

Default URL: http://10.0.0.1/ (Open in browser)

	Radiomaster ER6 ELRS Receiver: Features, Setup, and Binding Guide Comprehensive guide to the Radiomaster ER6 ELRS receiver, covering its features, technical specifications, setup instructions, and binding methods for optimal performance in RC hobbies.
	RadioMaster ER4 2.4GHz ELRS PWM Receiver User Manual This document provides detailed instructions and specifications for the RadioMaster ER4 2.4GHz ELRS PWM Receiver, covering setup, binding, telemetry, and product features for hobbyist applications.
	Radiomaster ER8 ELRS Receiver: Features, Setup, and Binding Guide Comprehensive guide to the Radiomaster ER8 ELRS receiver, covering its features, important settings, traditional and passphrase binding methods, telemetry, and FCC compliance. Designed for fixed-wing aircraft.
	Radiomaster ER6 ExpressLRS Receiver User Manual and Guide Comprehensive guide to the Radiomaster ER6 2.4GHz ELRS PWM receiver, covering setup, features, important notes, and binding methods for fixed-wing aircraft.
	Radiomaster ER8G ExpressLRS Receiver: Features, Setup, and Binding Guide Comprehensive guide to the Radiomaster ER8G ExpressLRS 2.4GHz RC receiver, covering its features, technical specifications, important notes, and binding procedures using traditional and passphrase methods.
	RadioMaster ER4 2.4GHz ExpressLRS Receiver User Manual Comprehensive user manual for the RadioMaster ER4 2.4GHz ExpressLRS receiver, covering setup, specifications, binding procedures, and telemetry calibration for RC models.
	RadioMaster ER8 ELRS Receiver User Manual and Setup Guide Comprehensive guide for the RadioMaster ER8 ELRS receiver, covering setup, binding, telemetry, and product features for fixed-wing aircraft.
	Radiomaster RP3-H ExpressLRS Receiver: Specifications and Binding Guide Detailed specifications and binding instructions for the Radiomaster RP3-H ExpressLRS 2.4GHz receiver, featuring TCXO for enhanced stability and compatibility with CRSF/S.BUS flight controllers.