ERTX-01 radio module is a high performance ultra long range wireless communication module.
ERTX-01 is a compact 868 MHz bi-directional radio module powered by Semtech's LoRa modulation technology.
The module provides ultra-long-range broadband communications and high noise immunity with minimal power consumption.
The module is designed as a product intended for installation on a custom board of an end device, is optimized for surface mounting and has a minimum number of required external connections.
LoRa modulation technology
ERTX-01 uses Semtech's patented LoRa spread spectrum modulation method. LoRa spreading modulation is performed by representing each bit of a data packet in multiple chips. The rate at which the data packet is transmitted directly is called the symbol rate, the ratio between the nominal modulation rate and the symbol rate per bit of information.
In LoRa mode, ERTX-01 radio module offers three bandwidth options: 125 kHz, 250 kHz and 500 kHz, with SF from 7 to 12.
The rate at which the data packet is transmitted directly is called the symbol rate, the ratio between the nominal modulation rate and the symbol rate per bit of information.
To further improve the robustness of the radio communication channel, ERTX-01 uses cyclic coding with different coding rates. This coding scheme allows for forward error detection and correction.
Radio module control
via UART using AT commands
Antenna path resistance
2.4 to 3.6 V
Digital input and output
Output power level
up to +19 dBm
Range of action
up to 15000 m (within line of sight)
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