## Beam-switching parameters (for spectra or drifts)

      ! BEAM: Beam-switching parameters (for spectra or drifts).
      integer(kind=4), parameter :: class_sec_bea_id=-11
      integer(kind=4), parameter :: class_sec_bea_len=5
      type beam
         sequence
         real(kind=4)    :: cazim   ! [ rad] Azimuth of observation
         real(kind=4)    :: celev   ! [ rad] Elevation of observation
         real(kind=4)    :: space   ! [ rad] Beam spacing
         real(kind=4)    :: bpos    ! [ rad] Position angle of beams
         integer(kind=4) :: btype   ! [code] System for angle
      end type beam