SIMBAD references

We present 2 and 20cm observations with the VLA of 25 candidate peaked spectrum radio sources. These data combined with those from earlier surveys have allowed us to construct radio spectra spanning a range of frequency from 0.3 to 15GHz. Ten of the 25 sources are found to be variable with no dominant peak in their spectra, four are large extended sources with simple steep spectra, and ten are confirmed as definite peaked spectrum sources, whose spectra are dominated by a peak between 1.0 and 2.5GHz, with peak flux densities between 0.4 and 3.8Jy. Two of the latter group are variable in flux density, but their spectra appear to remain peaked during the variation.