U20425 Used Comet Antennas CAA-500 Mark II Standing Wave Analyzer 1.8-500MHz

U20425 Used Comet Antennas CAA-500 Mark II Standing Wave Analyzer 1.8-500MHz

Overall Condition: Used, pristine physical and operational condition throughout! Cosmetic Details: The black metal enclosure, front glass analog cross-needle meter, and full-color TFT display panel show no scuffs, scratches, or handling marks. Controls & Display: The dual rotary control knobs (BAND and FREQ.) and front function push-buttons (Sweep Center, A.P.-Off Bandwidth, Graph ON/OFF, and Power) are firm and respond crisply. Connectors: Top-mounted SO-239 connector (1.8–300 MHz) and N-Female connector (300–500 MHz) feature bright, damage-free threads and contacts.

The Comet CAA-500 Mark II is a professional-grade, portable antenna analyzer engineered for tuning, analyzing, and troubleshooting antenna systems across the 1.8 MHz to 500 MHz range. Combining a traditional analog cross-needle meter for SWR/Impedance (Ohms) readout with a modern high-resolution full-color TFT display, it provides both instant visual sweep graphs and precise digital frequency readouts.

Designed for effortless field and bench testing, the Mark II automatically sweeps selected frequency bands to map SWR curves, measure complex impedance, check battery voltage levels, and verify antenna resonant points. Powered via 6 AA batteries or an external 8–16 VDC power source, it is an essential piece of test gear for mobile, field-day, and bench station setups.

Condition Breakdown

• General: Pre-owned, pristine cosmetic and operational condition

• Displays: Large dual-needle analog meter window and full-color TFT digital graphic LCD screen are flawless and crystal clear

• Enclosure & Labeling: Black chassis housing and rear serial label (AA21E11555, QC Pass Dec.2021) present in pristine condition

• Knobs & Buttons: Silver rotary band/frequency encoders and soft-touch tactile buttons operate smoothly

• Top RF Connectors: SO-239 female jack (1.8–300 MHz band) and N-Type female jack (300–500 MHz band) are clean, firm, and oxidation-free

Key Features

• Continuous 1.8–500 MHz Coverage: Analyzes HF, 6M, VHF (2M), 220 MHz, and UHF (440 MHz) antenna systems across 6 selector bands

• Dual Display System: Analog cross-needle meter provides real-time SWR and Impedance ($Z$) measurements alongside a color TFT LCD display for digital readout and SWR graph sweeps

• Automatic Band Sweep Function: Automatically sweeps selected bandwidths to display graphical SWR curves on the LCD screen

• Dual Dedicated RF Ports: SO-239 connector for HF/VHF (1.8–300 MHz) and N-Type female connector for UHF (300–500 MHz)

• Flexible Power Supply Options: Operates on 6 AA internal batteries or via external DC power input

• Auto Power-Off System: Energy-saving feature prevents battery drain during field operating sessions

What's Included

• Comet CAA-500 Mark II Standing Wave Analyzer Unit (Serial #AA21E11555)

Warranty

Comes with our 90-Day Warranty!

S/N: AA21E11555

QR-0245