The analyzer measures SWR, return loss, cable loss, and other parameters ranging from 60 kHz to 55 MHz. It features a built-in ZOOM capability for practical graphical measurements. Tasks such as rapid antenna check-out, tuning, comparing antenna characteristics, making coaxial stubs, cable testing, and measuring capacitance or inductance can be easily accomplished. The analyzer's "brain" is an STM 32-bit RISC microcontroller controlling a Si5351 PLL chip generating two sinusoidal signals.

The analyzer includes Rig Expert AA-55 ZOOM, USB cable, manual, software manual, alkaline batteries, and a frequency range of 0.06 to 55 MHz with 1 Hz resolution. It provides an SWR measurement range of 1 to 100 in numerical modes and 1 to 10 in chart modes. Display modes include SWR at single or multiple frequencies, SWR chart, return loss chart, and more. The RF output features a UHF connector type and square signal shape from 0.06 to 55 MHz with an output power of +13 dBm at 50 Ohm load. The analyzer operates on batteries or through a USB connection to a PC with a 320×240 colour TFT display and a waterproof keypad.