We review the soft X–ray properties of 3C 390.3 , 3C 120 , 3C 382 and 3C 445 , the only Broad Line Radio Galaxies ( BLRG ) for which good quality gratings data are currently available .
The XMM–Newton /RGS data of 3C 390.3 and 3C 120 were re–analyzed searching for warm absorbers , already discovered in 3C 382 and 3C 445 .
We confirm the absence of ionized absorption features in 3C 120 , but find signatures of outflowing gas ( v _ { out } \sim 10 ^ { 2 } km s ^ { -1 } ) in 3C 390.3 .
Its warm absorber ( Log \xi \sim 2 erg cm s ^ { -1 } , N _ { H } \sim 10 ^ { 20 } cm ^ { -2 } ) , similar to that observed in 3C 382 , is probably placed in the Narrow Line Regions .
Its gas content is slower and less dense than the accretion disk wind discovered in 3C 445 .
Independently from the location of the warm gas , the outflowing masses ( \dot { M } _ { out } ) of BLRGs are significantly ( but improbably ) predominant with respect to the accretion masses ( \dot { M } _ { acc } ) , suggesting a clumpy configuration of the warm absorber .
However , even assuming overestimated values of \dot { M } _ { out } , the kinetic luminosity of the outflow ( \dot { E } _ { out } ) is well below 1 \% of the kinetic power of the jet ( P _ { jet } ) .
Thus , the jet remains the major driver of the radio–loud AGN feedback at least on pc scale and beyond .
The warm absorber parameters ( N _ { H } , \xi ) of BLRGs span similar range of values of type 1 radio–quiet AGNs .
However , when the mass outflow rate of BLRGs and Seyfert 1s is plotted as a function of the radio–loudness , R=Log [ \nu L _ { \nu ( 5 GHz ) } /L _ { ( 2 - 10 keV ) } ] , the mass outflow rate seems to increase with radio power .