We have searched the northern sky for pulsars at the low radio frequency of
81.5 MHz, using the 3.6-hectare array at Cambridge, England. The survey covered
most of the sky north of declination -20 deg and provided sensitivities of
order 200 mJy for pulsars not too close to the galactic plane. A total of 20
pulsars were detected, all of them previously known. The effective
post-detection sampling rate was 1.3 kHz, and the sensitivity to low-dispersion
millisecond pulsars was sufficient to allow the detection of objects similar to
PSR J0437-4715 (period 5.7 ms, dispersion measure 2.6 cm^-3 pc, mean flux
density 1 Jy). No such pulsars were found.Comment: 19 pages, 5 figure