www.dragino.com
LG01-N/OLG01-N Gateway User Manual
53 / 61
13.
FAQ
13.1
Why there is 433/868/915 version LoRa part?
Different country has different rules for the ISM band for using the LoRa. Although the LoRa chip
can support a wide range of Frequency, we provide different version for best tune in the LoRa
part. That is why we provide different version of LoRa.
13.2
What is the frequency range of LG01N LoRa part?
The chip used in the LoRa part is:
Version
LoRa IC
Support Frequency
Best Tune Frequency
433
Semtech SX1278
Band2(LF): 410 ~525Mhz
Band3(LF): 137 ~175Mhz
433Mhz
868
Semtech SX1276
Band1(HF): 862 ~1020Mhz
868Mhz
915
Semtech SX1276
Band1(HF): 862 ~1020Mhz
915Mhz
User can set the LoRa within above frequency range in the software.
13.3
What does “Limited support on LoRaWAN”?
The base requirement to fully compatible with LoRaWAN protocol requires the gateway support
8 channels. The LG01N only support two channels and can only support limited LoRaWAN
protocol.
Because of this limitation, if user wants to use a standard LoRaWAN device with LG01N, user has
to modify this LoRaWAN node to run in single frequency to work with LG01N.
For example, in EU868 frequency plan, a standard LoRaWAN node will send the LoRa packet in
hoping frequency (normally in 8 different frequencies). So a full compatible LoRaWAN gateway
will be able to receive all packets while LG01N will miss 7 packets (according to the current
software design, only one rx channel support).
So LG01N is not recommended for high density LoRa deployment or the LoRa Node can’t be
configured to run in single frequency.
