LoRa Frequency in the US: LoRaWAN Network Details

In the United States, LoRaWAN networks operate within specific frequency bands governed by the FCC. The use of ISM bands like 902-928 MHz enables long-range communication while ensuring low power consumption, making LoRa ideal for IoT applications such as smart cities, industrial monitoring, and agriculture.

This guide explores the LoRa frequencies used in the US and how they power efficient IoT solutions. It also mentions data rate and Tx power (i.e. EIRP). LoRaWAN frequency bands, channels, EIRP and data rate requirements are specific to different parts of the world. This section mentions the same for United States of America ( USA ).

What is LoRaWAN frequency bands used in US ?

The US902-928 Lorawan band is used in the United States region. This band is divided into following.

• Upstream Direction: 64 channels (numbering 0 to 63) starting from 902.3 MHz with 200 KHz spacing till 914.9 MHz.
• Upstream Direction: 8 channels (numbering 64 to 71) starting from 903.0 MHz with 1.6 MHz spacing till 914.2 MHz.
• Downstream Direction: 8 channels (numbering 0 to 7) starting from 923.3 MHz with 600 KHz spacing till 927.5 MHz

LoRaWAN data rates in US

The table below shows the bit rate or data rate for US LoRaWAN end devices.

LoRaWAN Transmit (Tx Power) and EIRP in US

The table below mentions Tx Power and EIRP for LoRaWAN US region.

LoRaWAN frequency Bands in other regions of the world

• 902 to 928MHz RF Band is used in US.
• 433 to 434 MHz RF band is used in EU region.
• 920.5 to 924.5 MHz, 779 to 787 MHz, 470 to 510 MHz, 433.05 to 434.79 MHz, 314 to 316 MHz, 430 to 432 MHz and 840 to 845 MHz LoRaWAN bands are used in CHINA.

Reference: RP002-1.0.0 LoRaWAN Regional Parameters, www.lora-alliance.org .

Conclusion

The US specific LoRa frequency bands form the foundation of robust LoRaWAN networks, supporting diverse IoT applications. A clear understanding of these frequencies ensures compliant and effective deployments.