High quality construction The Antenna Analyzer features a black case to protect it from external damage, making it suitable for field use and transport. Convenient operation Control buttons are easy to use. You can select operation mode and access extended functions with simple, straightforward controls. Wide measurement range SWR measurement range is 1.0 to 9.99. The frequency step size is user configurable with increments of 100 Hz, 1 kHz, 10 kHz, and 100 kHz. Power and portability Powered by external DC 12 to 14 V at 500 mA with a 2.1 mm center-positive connector. The compact size makes it easy to carry and store in your bag. Use scenarios - Field deployment for ham radio: quickly tune and verify dipoles, wires, and vertical antennas for portable operation. - On-site antenna maintenance: check feedlines, coax, and antennas at remote locations to ensure proper performance. - Emergency and disaster response: include in a portable kit to confirm antenna readiness during outages or rapid deployments.