Monochromatic uv-plane coverage of a typical 8 h 150 MHz LoTSS observation around declination +55° excluding the international stations. The left panel shows the full uv coverage and the right panel shows the dense uv coverage in the inner region of the uv plane. Here we presented the monochromatic coverage for display purposes but the full bandwidth used in each observation is 48 MHz, which corresponds to a fractional bandwidth of ~1/3, and this provides considerable additional filling of the uv plane. The uv points are colour coded according to the type of stations that make up each baseline. Those containing only core stations, remote stations, or a combination of the two are shown in black, red, and green, respectively.