hi everyone,
I intend to buy the module SparkFun LoRaSerial Kit - 915MHz, but I don’t know if I can use it in Taiwan?
Looks like Taiwan uses 923 to 925MHz with the rest of the band dedicated to cellular telephones.
Double check with your regulatory agencies for RF, I would imagine getting into cellular bandwidth could cause you some expensive troubles.
I’m confident that some amateur radio operators local to you in Taiwan will be willing to talk to you about it as long as you’d care to listen. If they’re like hams here, you’ll have the opposite problem of getting us to stop talking about radio for one stinking second. Emphasize in your introduction that you want advice to maintain legal compliance and that you’re not seeking help skirting any rules.
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I intend to use the SparkFun LoRaSerial Kit - 915MHz module for RTK. Can I adjust the frequency to range from 923 to 925 MHz?
It looks like the modules are compatible AT Commands - SparkFun LoRaSerial Product Manual by sending new frequency min/max settings via AT commands, provided that it is legal to use those bands where you are 
They were just saying to make sure using that isn’t against any laws over there 