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61	61	= 2. Notice of US915/CN470/AU915 Frequency band =
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63	63	If user has problem to work with lorawan server in band US915/AU915/CN470, he can check:
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65		-* What **sub-band** the server support ?
66		-* What is the **sub-band** the gateway support ?
67		-* What is the **sub-band** the end node is using ?
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	68	+What **sub-band** the server support ?
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	71	+What is the **sub-band** the gateway support ?
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	73	+* (((
	74	+What is the **sub-band** the end node is using ?
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69	69	All of above should match so End Node can properly Join the server and don't have packet lost.
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71	71	In LoRaWAN protocol, the frequency bands US915, AU915, CN470 each includes at least 72 frequencies. Many gateways support only 8 or 16 frequencies, and server might support 8 frequency only. In this case, the OTAA join time and uplink schedule is long and unpredictable while the end node is hopping in 72 frequencies, because the end node will send data in many frequency that the gateway or server doesn,t support.
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73	73	Here are the freuqency tables for these bands as reference:
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75	75	[[image:https://wiki.dragino.com/images/thumb/3/3f/US915_FRE_BAND-1.png/600px-US915_FRE_BAND-1.png||height="170" width="600"]]
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