RigExpert AA-600 HF/VHF Antenna Analyzer (0.1-600MHz) Frequency range: 0.1 to 600 MHz Frequency entry: 1 kHz resolution Measurement for 25, 50, 75 and 100-Ohm systems SWR measurement range: 1 to 100 in numerical mode, 1 to 10 in graph mode ---SWR display: numerical or easily-readable bar ---R and X range: 0...10000, -10000...10000 in numerical mode, 0...1000, -1000...1000 in graph mode Display modes: SWR at single or multiple frequencies, SWR, return loss, R, X, Z, L, C at single frequency, SWR graph, 80 points, R, X graph, 80 points, Smith chart, 80 points, TDR (Time Domain Reflectometer) graph