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We report low frequency observations of Wolf-Rayet galaxies, NGC 4214 and NGC4449 at 610, 325 and 150 MHz, using the Giant Meterwave Radio Telescope (GMRT).We detect diffuse extended emission from NGC 4214 at and NGC 4449. NGC 4449 isobserved to be five times more radio luminous than NGC 4214, indicatingvigorous star formation. We estimate synchrotron spectral index afterseparating the thermal free-free emission and obtain $\alpha_{nt}=-0.63\pm0.04$(S$\propto\nu^{\alpha_{nt}}$) for NGC 4214 and $-0.49\pm0.02$ for NGC 4449.About $22\%$ of the total radio emission from NGC 4214 and $\sim 9\%$ from NGC4449 at 610 MHz is thermal in origin. We also study the spectra of two compactstar-forming regions in NGC 4214 from 325 MHz to 15 GHz and obtain$\alpha_{nt}=-0.32\pm0.02$ for NGC 4214-I and $\alpha_{nt}=-0.94\pm0.12$ forNGC 4214-II. The luminosities of these star-forming regions ($\sim 10^{19}\rmW~ Hz^{-1}$) appear to be similar to those in circumnuclear rings in normaldisk galaxies observed with similar linear resolution. We detect the supernovaremnant SNR J1228+441 in NGC 4449 and estimate the spectral index of theemission between 325 and 610 MHz to be $-1.8$ in the epoch 2008-2009. Thegalaxies follow the radio-FIR correlation slopes suggesting that star formationin Wolf - Rayet galaxies, which are low-metallicity systems, are similar tothat of normal disk galaxies.

GMRT radio continuum study of Wolf Rayet galaxies I: NGC 4214 and NGC 4449