The Midland KW 520 has two separate measurement lines, one from 1.8 to 200 MHz and the other from 140 to 525 MHz. This allows the simultaneous connection of 2 systems: one in HF/VHF and the other in VHF/UHF, with the ability to select which one will be used for measurements via the special switch. Also, the selected measurement line is displayed with the corresponding light indicator.