The radio may cover 76 to 108 MHz, the frequency coverage may be selectable by the user, or during assembly the radio may be set to operate on one band by means of a specially placed diode or other internal component.
12.
The first step toward the creation of what would become ALMA came in 1997, when the ESO ( European Southern Observatory ) agreed to pursue a common project that merged the MMA and LSA . The merged array combined the sensitivity of the LSA with the frequency coverage and superior site of the MMA . ESO and NRAO worked together in technical, science, and management groups to define and organize a joint project between the two observatories with participation by Canada and Spain ( the latter became a member of ESO later ).
