We explore modulation-sideband recoupling conditions of the 13 C– 13 C Second-order Hamiltonian among Analogous nuclei plus pulse sequence (SHA+), and found that this sequence can be used in two different recoupling regimes. The first regime, ν R >Δνisomax, is recommended for broad-band recoupling to avoid any rotational resonance broadening. In this regime, the spinning speed should be only slightly larger than Δνisomax, to obtain the best transfer efficiency. The second regime, ν R <Δνisomax, can be used to observe long-range constraints with lower spinning speed, which increases the transfer efficiency, and may allow using bigger rotors to increase the S/N ratio.