We present a 324.5 MHz image of the NOAO Boötes field that was made using Very Large Array ( VLA ) P-band observations .
The image has a resolution of 5.6 \times 5.1 arcsec , a radius of 2.05 ^ { \circ } and a central noise of \sim 0.2 mJy beam ^ { -1 } .
Both the resolution and noise of the image are an order of magnitude better than what was previously available at this frequency and will serve as a valuable addition to the already extensive multiwavelength data that are available for this field .
The final source catalogue contains 1370 sources and has a median 325 to 1400 MHz spectral index of -0.72 .
Using a radio colour-colour diagram of the unresolved sources in our catalogue , we identify 33 megahertz peaked-spectrum ( MPS ) sources .
Based on the turnover frequency linear size relation for the gigahertz peaked-spectrum ( GPS ) and compact steep-spectrum ( CSS ) sources , we expect that the MPS sources that are compact on scales of tens of milliarcseconds should be young radio loud active galactic nuclei at high ( z > 2 ) redshifts .
Of the 33 MPS sources , we were able to determine redshifts for 24 , with an average redshift of 1.3 .
Given that five of the sources are at z > 2 , that the four faint sources for which we could not find redshifts are likely at even higher redshifts and that we could only select sources that are compact on a scale of \sim 5 arcsec , there is encouraging evidence that the MPS method can be used to search for high-redshift sources .