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The evolved main-sequence Sun-like stars KIC 10273246 (F-type) and KIC10920273 (G-type) were observed with the NASA Kepler satellite forapproximately ten months with a duty cycle in excess of 90%. Such continuousand long observations are unprecedented for solar-type stars other than theSun.  We aimed mainly at extracting estimates of p-mode frequencies - as well as ofother individual mode parameters - from the power spectra of the light curvesof both stars, thus providing scope for a full seismic characterization.  The light curves were corrected for instrumental effects in a mannerindependent of the Kepler Science Pipeline. Estimation of individual modeparameters was based both on the maximization of the likelihood of a modeldescribing the power spectrum and on a classic prewhitening method. Finally, weemployed a procedure for selecting frequency lists to be used in stellarmodeling.  A total of 30 and 21 modes of degree l=0,1,2 - spanning at least eight radialorders - have been identified for KIC 10273246 and KIC 10920273, respectively.Two avoided crossings (l=1 ridge) have been identified for KIC 10273246,whereas one avoided crossing plus another likely one have been identified forKIC 10920273. Good agreement is found between observed and predicted modeamplitudes for the F-type star KIC 10273246, based on a revised scalingrelation. Estimates are given of the rotational periods, the parametersdescribing stellar granulation and the global asteroseismic parameters$\Delta\nu$ and $\nu_{\rm{max}}$.

Asteroseismology from multi-month Kepler photometry: the evolved Sun-like stars KIC 10273246 and KIC 10920273