Original NISSEI DG-503 SWR Digital Power Meter 1.6-525Mhz Radio Short Wave Meter

SWR minimum test power: 1W. Test function: forward / reflective power / Bobbi. Frequency correction point: 14 MHz/ 50MHz/ 145MHz/ 435 MHz. 1× Operation Manual. Frequency range:1.6-60MHz/125-525MHz. equipped with 13.8V DC power line.