Relationship between radio luminosity and black hole mass for bright and detected galaxies at 22 GHz. Filled circles and open squares indicate detected and non-detected galaxies at 22 GHz. The crosses represent galaxies detected at 22 GHz with L_22  GHz < 10²³ W Hz^-1. The correlation coefficients are derived from the sample of galaxies detected at 22 GHz L_22  GHz > 10²³ W Hz^-1. There is no apparent correlation between black hole mass and radio luminosity at both 1.4 and 22 GHz.