Swr / power meter dimensions: 155wx63hx103dmm weight: 540g frequency range: 140 to 525mhz power display range: 5w 20w 200w accuracy at full scale: 5w range ±10%(f.s), 20w range ±5%(f.s), 200w range ±5%(f.s), (add -10% of full scale at 220 to 420mhz,add +10% of full scale at 450 to 525mhz) minimum power at swr measurement: 4winsertion loss:less than 0.1Db(140 to 250mhz) less than 0.2Db(400 to 470mhz)/less than 0.3Db(525mhz)measurement function: forward rf power, reflected rf power,swr,pep monitorconnector:n