5.4.3F Channel raster for UE category NB1 and NB2
36.521-13GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Part 1: Conformance testingRadio transmission and receptionRelease 17TSUser Equipment (UE) conformance specification
Channel raster for category NB1 and NB2 in-band, guard-band and standalone operation is 100 kHz.