We have studied radio haloes and relics in nine merging galaxy clusters using the Murchison Widefield Array ( MWA ) .
The images used for this study were obtained from the GaLactic and Extragalactic All-sky MWA ( GLEAM ) Survey which was carried out at 5 frequencies , viz .
88 , 118 , 154 , 188 and 215 MHz .
We detect diffuse radio emission in 8 of these clusters .
We have estimated the spectra of haloes and relics in these clusters over the frequency range 80 - 1400 MHz ; the first such attempt to estimate their spectra at low frequencies .
The spectra follow a power law with a mean value of \alpha = -1.13 \pm 0.21 for haloes and \alpha = -1.2 \pm 0.19 for relics where , S \propto \nu ^ { \alpha } .
We reclassify two of the cluster sources as radio galaxies .
The low frequency spectra are thus an independent means of confirming the nature of cluster sources .
Five of the nine clusters host radio haloes .
For the remaining four clusters , we place upper limits on the radio powers of possible haloes in them .
These upper limits are a factor of 2 - 20 below those expected from the L _ { X } - P _ { 1.4 } relation .
These limits are the lowest ever obtained and the implications of these limits to the hadronic model of halo emission are discussed .