Relative Flux Density of Pulsars

The challenges of detecting pulsars are clearly shown by the following tables which show the relative flux densities (in descending order) of a number of pulsars. (from the ATNF Pulsar Catalogue)

Ordered by Flux Density @ 400 MHz

After the first two pulsars (B0833-45, B0329+54) the 400 MHz signal strength drops away rapidly.

Ordered by Flux Density @ 1400 MHz

Once again, after the first several pulsars (B0833-45, B0329+54, J0437-4715) the 1400 MHz signal strength drops away quickly.