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the radio frequencies assigned to NDBs shall be selected from those available in that portion of the spectrum between 190 kHz and 1 750 kHz.
Position
See In case a NDB (Locator) collocated with a marker is physically located at the same position as the marker, the geographic position (latitude and longitude) of the Marker is also the geographic position of the NDB.
In case a NDB (Locator) is collocated with a Marker and the position of the NDB is different from the position of the Marker, some restrictions have to taken into account (see coding rules for Marker).
For mor edetails see topic Navaid Position & Elevation.
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