  A new technique for calibrating Tully-Fisher like relations by using field
galaxies is proposed. Based on a null-correlation approach (NCA), the technique
is insensitive to the presence of selection effects on apparent magnitude $m$
and on log line-width distance indicator $p$. This interesting property is used
for discarding near by galaxies of the observed sample. It is shown that such a
subsampling allows in effect to attenuate biases on calibration parameters
created by the presence of radial peculiar velocities.
