1 INTRODUCTION  
2 SAMPLE AND ANALYSIS  
2.1 Radio spectral index  
2.2 Contribution from star formation  
3 RESULTS AND DISCUSSION  
3.1 Radio AGN host galaxies  
3.2 Bolometric luminosities  
3.3 Jet kinetic power and feedback  
3.4 Black hole mass and accretion rate  
4 CONCLUSIONS AND OPEN ISSUES