AS923-3 is one of the regional parameter sets defined for LoRaWAN in the AS923 family. AS923 covers much of the Asia-Pacific region and operates in the sub-GHz spectrum around 915-928 MHz, using 125 kHz channels. The “-3” suffix denotes a specific variant: it shares the AS923 channel plan but applies a defined frequency offset to the default channels, fitting the plan within a particular slice of locally allocated spectrum.
The AS923 group exists because different countries permit slightly different sub-bands within the broader allocation. Rather than define a separate plan per market, the LoRaWAN Regional Parameters specify AS923-1 through AS923-4 as offset variants of the same base scheme.
A LoRaWAN end device must support the exact frequency plan used by its network. Key points:
- AS923-3 uses the AS923 channel structure with its own frequency offset.
- A mismatched variant can prevent a device from joining or transmitting.
- Always confirm the required variant with your operator before provisioning.
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Frequently asked questions
How does AS923-3 differ from AS923-1 and AS923-2?
All are part of the AS923 family defined in the LoRaWAN Regional Parameters and share the same channel plan structure and 125 kHz bandwidth. They differ by a frequency offset applied to the default join channels, letting operators fit AS923 operation into different slices of the regional spectrum allocation. AS923-3 applies its own offset, so a device must be configured for the specific variant in use on the network it joins.
Which frequency plan should my device use?
Match the plan to the country and network where the device is deployed. A device configured for the wrong AS923 variant will use the wrong default channels and may fail to join. Confirm the exact variant (AS923-1, -2, -3, or -4) with your network operator before provisioning.