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LTE Bands (max. 4)AT command LTEBANDVALhttps://wiki.teltonika-gps.com/index.php?title=LTE_band_lock
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https://www.quectel.com/wp-content/uploads/2021/05/Quectel_RG50xQRM5xxQ_Series_AT_Commands_Manual_V1.2.pdf
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8000124gsmctl -A 'AT+QCFG="band",0,LTEBANDVAL,0,1'
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