Interferometer spectrum obtained with the new wideband correlator (WIDEX) that is centered at 99.5 GHz. The five recombination lines that fall in the 3.6 GHz wide spectrum are labeled. The zoomed-in spectra of the three clearly detected lines are shown in the insets on velocity scales with the continuum subtracted. The dotted red curves indicate Gaussian fits whose parameters are listed in Table 2.