The Green Bank 6cm (GB6) radio survey

The GB6 survey [24] covers the declination band 0$^\circ$ $< \delta <$ 75$^\circ$. It contains 54579 sources stronger than 25mJy. 16050 sources are within the FBS area. We expect 15 chance coincidences within 2$^\prime$ and four within 1$^\prime$. We found 18 and 12 coincidences within 2$^\prime$ and 1$^\prime$, respectively. Eight known QSOs are detected, all within 30$^{\prime\prime}$ of the radio-positions. We have measured accurate optical positions (Table 1) for the ten remaining objects not known to be QSOs. We are left with three objects for which the distance between optical and radio positions is less than three times the quoted radio error. Two (FBS 0958+353 and 1534+389) are stars. A more accurate position of the third source associated with FBS 1619+749, measured with the NRAO VLA sky survey (see below), excludes this identification.