  Triatomic molecule RaOH combines the advantages of laser-coolability and the
spectrum with close opposite-parity doublets. This makes it a promising
candidate for experimental study of the $\mathcal{P}$,$\mathcal{T}$-violation.
Previous studies concentrated on the calculations for different geometries
without the averaging over the rovibrational wave function and stressed the
possibility that the dependence of the $\mathcal{P}$, $\mathcal{T}$ parameters
on the bond angle may significantly alter the observed value. We obtain the
rovibrational wave functions of RaOH in the ground electronic state and excited
vibrational state using the close-coupled equations derived from the adiabatic
Hamiltonian. The potential surface is constructed based on the two-component
relativistic CCSD(T) computation employing the generalized relativistic
effective core potential (GRECP) for the Radium atom. The averaged values of
the parameters $E_{\rm eff}$ and $E_s$ describing the sensitivity of the system
to the electron electric dipole moment and the scalar-pseudoscalar
nucleon-electron interaction are calculated and the value of $l$-doubling is
obtained.
