This meter is designed for checking SWR and power levels across VHF and UHF systems, operating from 120 MHz to 500 MHz to support 2m, 1.25m, and 70cm bands along with GMRS and MURS. It matches a 52-ohm impedance setup and works between your antenna and radio for clear readings while tuning or verifying system performance. The unit is black in color and labeled as the Workman 104.