Hi, user here from Malaysia 
… I’m setting up my boards and for the region code, I’m a little confused. There’s MY_433 and MY_919 available. However, when I first started doing research on LoRa frequency for Malaysia, it’s suppose to be AS920-923 (“AS1”), the same as used in Japan. My Heltec v3 board can work fine with either MY_919 or JP AS1, but I am just confused which to use 
… if anyone can shed any light on this, I would be extremely grateful. Thanks 
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Hiya,
MY433 If you are a HAM Radio operator without encryption.
MY919 is the right for public use. Hope that helps.
Any question please visit MCMC. Ta
2 Likes
Thank you so much for the clarification.
Hi all, I checked, we can use 433MHz as public (encryption also can). This is because the band overlaps. Please be mindful only on the transmitted power.
More info here
Let’s connect at 433MHz!
73
9W2LRM
page 8 lists the frequencies & power allowed.
page 11 describes the process to get the devices certified to be used in Malaysia