  Recent observations with the low threshold Cherenkov telescopes proved that
sub-TeV gamma-rays are able to arrive from active galaxies at relatively large
distances in spite of expected severe absorption in the extragalactic
background light (EBL). We calculate the gamma-ray spectra at TeV energies from
two example OVV quasars, 3C 273 and 3C 279, assuming that gamma-rays are
injected in the inner parts of the jets launched by the accretion disks. It is
assumed that gamma-rays in the broad energy range (from MeV up to TeV) are
produced in these blazars with the power law spectrum with the spectral index
as observed from these objects by the EGRET telescope at GeV energies. We take
into account the internal absorption of these gamma-rays by considering a few
different models for the radiation field surrounding the jet. The classical
picture of the relativistic blob in jet model for the injection of primary
gamma-rays is considered with the injection rate of gamma-rays as observed by
the EGRET telescope in the GeV energy range. The results of calculations are
compared with positive detection and the upper limits on the sub-TeV gamma-ray
fluxes from these two sources. It is concluded that even with the Stecker EBL
model, the level of the gamma-ray emission from 3C~279 is close to the recent
measurements in the sub-TeV gamma-ray energies provided that the injected
gamma-ray spectrum extends from the GeV energies over the next two decades with
this same spectral index. We also suggest that a few day time scale flare from
3C 273 can be detected by the MAGIC II stereo telescopes.
