Polarisation of S Per and VX Sgr in OH

Both targets were sampled at irregular intervals of 2-3 days up to 4 months. Time series of OH spectra in the Stokes parameters I, Q, U and V are presented.

The spectra of the linearly polarized flux density, p=sqrt{Q^2^+U^2^}, the degrees of circular polarization, m_C_=V/I linear polarization, m_L_=p/I, and position angle, {chi}=0.5xtan^-1^(U/Q), drived from the Stokes parameters are also given. The degrees of polarization at 1667MHz show diverse behaviours usually uncorrelated with the total flux, whereas those at 1612MHz are commonly stable on time scales of 4-6yr. Several outbursts of the 1667MHz emission on time scales of 0.5-2yr were found in both targets.