  We present a multi-frequency study of eclipse properties of a transitional
redback millisecond pulsar J1227$-$4853 discovered in 2014 with the GMRT.
Emission from this pulsar is eclipsed at 607 MHz for about 37% of its orbit
around the superior conjunction. We observe eclipse ingress and egress
transition which last 12% and 15% of its orbit respectively, resulting in only
36% of the orbit being unaffected by eclipsing material. We report an excess
dispersion measure (DM) at eclipse boundaries of 0.079(3) pc cm$^{-3}$ and the
corresponding electron column density (N$_e$) is 24.4(8) x 10$^{16}$ cm$^{-2}$.
Simultaneous timing and imaging studies suggests that the eclipses in
J1227$-$4853 are not caused by temporal smearing due to excess dispersion and
scattering but could be caused by removal of pulsar flux due to cyclotron
absorption of the pulsed signal by intra-binary material constraining the
companion's magnetic field. Additionally, near inferior conjunction at orbital
phase 0.71 and 0.82 the pulsed emission is significantly delayed which is
associated with a fading of the pulsed and continuum flux densities. At orbital
phase $\sim$0.82, we measure a change in DM of 0.035(3) pc cm$^{-3}$ and N$_e$
of 10.8(8) x 10$^{16}$ cm$^{-2}$ associated with a dimming of up to $\sim$30%
of the peak flux density. Such flux fading around a fixed orbital phase is not
reported for other eclipsing binaries. Moreover, this event around inferior
conjunction could be caused by absorption of pulsed signal by fragmented blobs
of plasma generated from mass loss through the L2 Lagrangian point.
