The 5 GHz strong source surveys. V. Survey of the area between declination 70 and 90deg.

The north pole region between declinations 70° and 90° has been surveyed at 4.9 GHz using the MPI 100-m telescope. A total of 476 sources with flux densities above 50 mJy were found in this survey, which covers 0.401 sr of the sky and is essentially complete above 250 mJy. It is thus the most sensitive of the S-surveys. Radio positions accurate to between 0.2 and 6 arcsec are given in this catalog, as well as accurate flux densities at 2.7, 5.0, and 10.7 GHz, and suggested optical identifications for the stronger sources.