The Comet CAA-500 Mark II Antenna Analyzer is an advanced, professional-grade instrument designed to provide precise measurements of Standing Wave Ratio (SWR), impedance, resistance, and reactance across a wide frequency range of 1.8 to 500 MHz. This comprehensive tool is essential for amateur radio enthusiasts and professionals seeking to optimize antenna performance with accuracy and efficiency.

Key Features:

• Wide Frequency Coverage: The CAA-500 Mark II spans frequencies from 1.8 MHz to 500 MHz, encompassing HF, VHF, and UHF bands, including the 222 MHz band. This extensive range allows users to analyze and fine-tune antennas across multiple amateur radio bands.
  
  

• Dual Display System: Combining a traditional cross-needle analog meter with a modern full-color TFT LCD, the analyzer simultaneously displays SWR and impedance. The analog meter provides real-time feedback, while the LCD offers detailed numerical data and graphical representations.
  
  

• Auto and Manual Sweep Functions:
  
  

• Auto Band Sweep: Select a preset amateur band and initiate the sweep. The analyzer automatically scans the entire band, graphing the SWR curve on the LCD within approximately 30 seconds.

• Manual Sweep: Define specific center frequencies and bandwidths to manually sweep and analyze particular frequency segments, allowing for targeted antenna adjustments.

• Multiple Sweep Overlays: The device supports overlaying up to five manual sweeps in different colors. This feature enables users to compare the effects of various antenna adjustments, such as changes in length, position, or height above ground, facilitating informed optimization decisions.
  
  

• Versatile Connectors: Equipped with an SO-239 connector for the 1.8 to 300 MHz range and a Type-N connector for the 300 to 500 MHz range, the analyzer ensures minimal signal loss and maintains measurement accuracy across all supported frequencies.
  
  

• Power Options: The CAA-500 Mark II operates on six AA alkaline batteries, providing up to 10 hours of continuous use. For extended sessions, an external 8-16V DC power source can be connected via the included 2.5mm plug and cable. Additionally, the built-in trickle charger supports Nickel-Metal Hydride (NiMH) rechargeable batteries, offering flexibility for various operating conditions.
  
  

• Compact and Durable Design: Measuring 3.3 x 6.9 x 2.5 inches (80 x 170 x 60 mm) and weighing approximately 28 ounces (800 grams), the analyzer is both portable and robust. Its sturdy construction ensures reliability in both field and laboratory environments.
  
  

Technical Specifications:

• Frequency Range: 1.8 MHz to 500 MHz

• Impedance Measurement Range: 12.5 to 300 Ohms

• SWR Measurement Range: 1:1 to infinity

• Display: Full-color TFT LCD and cross-needle analog meter

• Power Supply: 6 AA batteries (alkaline or NiMH) or external 8-16V DC

• Connectors: SO-239 (1.8-300 MHz), Type-N (300-500 MHz)

• Dimensions: 3.3 x 6.9 x 2.5 inches (80 x 170 x 60 mm)

• Weight: 28 ounces (800 grams)

The Comet CAA-500 Mark II Antenna Analyzer stands out as a versatile and indispensable tool for anyone serious about antenna analysis and optimization. Its blend of traditional analog metering with modern digital displays, coupled with comprehensive measurement capabilities, makes it a valuable addition to any radio operator's toolkit.

Note: For additional information, look at the files under the "Documentation" tab.