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We present the results of 325 MHz GMRT observations of a super-cluster field,known to contain five Abell clusters at redshift $z \sim 0.2$. We achieve anominal sensitivity of $34\,\mu$Jy beam$^{-1}$ toward the phase centre. Wecompile a catalogue of 3257 sources with flux densities in the range$183\,\mu\rm{Jy}\,-\,1.5\,\rm{Jy}$ within the entire $\sim 6.5$ square degreefield of view. Subsequently, we use available survey data at other frequenciesto derive the spectral index distribution for a sub-sample of these sources,recovering two distinct populations -- a dominant population which exhibitspectral index trends typical of steep-spectrum synchrotron emission, and asmaller population of sources with typically flat or rising spectra. Weidentify a number of sources with ultra-steep spectra or rising spectra forfurther analysis, finding two candidate high-redshift radio galaxies and threegigahertz-peaked-spectrum radio sources. Finally, we derive theEuclidean-normalised differential source counts using the catalogue compiled inthis work, for sources with flux densities in excess of $223 \, \mu$Jy. Ourdifferential source counts are consistent with both previous observations atthis frequency and models of the low-frequency source population. Theserepresent the deepest source counts yet derived at 325 MHz. Our source countsexhibit the well-known flattening at mJy flux densities, consistent with anemerging population of star-forming galaxies; we also find marginal evidence ofa downturn at flux densities below $308 \, \mu$Jy, a feature so far only seenat 1.4 GHz.

Deep observations of the Super-CLASS super-cluster at 325 MHz with the GMRT: the low-frequency source catalogue