  Narrow linewidth signals of Electromagnetically Induced Transparency (EIT) in
the metastable 83Kr have been observed for the first time. Various hyperfine
transitions in 4p55s[3/2]2 to 4p55p[5/2]3 manifolds of 83Kr have been
identified through the experimentally observed EIT signals. Some unresolved or
poorly resolved hyperfine transitions in saturated absorption spectroscopy
(SAS) are clearly resolved in the present work. Using the spectral separation
of these EIT identified hyperfine transitions, the magnetic hyperfine constant
(A) and the electric quadrupole hyperfine constant (B) are determined with
improved accuracy for 4p55s[3/2]2 and 4p55p[5/2]3 manifolds.
