  We present simultaneous spectroscopic observations taken during four
observing runs (1996 to 1999) of H_alpha, H_beta, H_epsilon, Ca II H & K, and
Ca II IRT lines of the chromospherically active binary BF Lyn. Both components
have strong emission in the H_epsilon, Ca II H & K and Ca II IRT lines and a
strong filling-in of the H_alpha and H_beta lines have been observed after the
application of the spectral subtraction technique. We have found that the hot
component (K2 V) is always the most active of the system. The different
activity indicators of the hot and cool components show anticorrelated
variations with the orbital phase.
