Huanyu Mini HF ANT SWR Antenna Analyzer SARK100 For Ham Radio Hobbyists 1-60 Mhz USB port connects to PC for field-upgradeable software and uploading of real-time measurement data Precise and self-calibrating reflectometer design measures forward and reflected signals and impedance data Display 2x16 with optional backlight Manual control option displays SWR and complex impedance at selected frequencies