COMET CAA500MKII SWR Antenna Analyzer
Best precision tool for amateur radio antenna tuning and field maintenance.
The COMET CAA-500MarkII is a versatile SWR and impedance analyzer designed for amateur radio enthusiasts. It covers amateur bands from 1.8MHz to 500MHz, combining a classic analog meter with a modern full-color LCD for detailed impedance data. This analyzer features auto and manual band-sweep functions, allowing up to five manual sweep results to be overlaid for easy comparison. Power options include external DC or 6 AA batteries, offering up to 10 hours of operation for convenient field use. Its robust metal construction ensures durability.
$499.95
Owner Satisfaction
4.6
/ 5
Category Rank
187
/ 1072
#187 in Communication Radio Accessories
Price vs Category Average
+401%
Above average
Frequency Range
1.8500
/ -MHz
Who it's for
- Amateur radio operators needing broad spectrum coverage
- Users preferring simultaneous analog and digital data visualization
- Technicians requiring precise antenna tuning and troubleshooting metrics
Who should skip it
- Hobbyists working with a limited equipment budget
- Field operators needing long-lasting battery performance
- Travelers prioritizing lightweight and compact portable gear
Performance breakdown
Frequency Versatility
Broad coverage handles everything from HF to UHF bands with ease.
Display Clarity
Hybrid analog and digital interface provides excellent visual data feedback.
Field Portability
Robust metal housing and reliable battery life suit remote site operations.
Sweep Functionality
Overlay capabilities make comparing multiple antenna configurations simple and intuitive.
Build Durability
Rugged metal construction withstands the rigors of frequent field deployment.
Operational Simplicity
Straightforward interface design allows for quick setup without complex menus.
Key Specs
Frequency Range
1.8-500MHz
Display
Analog cross-needle meter and full-color TFT LCD screen
Connectors
SO-239 (1.8-300MHz), N-male (300-500MHz)
Power Source
8-16VDC external power or 6 AA batteries (Alkaline or NiMH)
Battery Life
Up to 10 hours
Charging
Trickle charger built-in (for NiMH only)
Battery Chemistry
Alkaline, Nickel-Metal Hydride (NiMH)
Model Number
CAA500MKII
Features
- Simultaneous SWR and impedance analog display
- Full-color LCD for graphic impedance data
- Overlay up to 5 manual sweep results
- Auto and manual band-sweep functions
- Extended 10-hour battery life
- Covers 1.8MHz to 500MHz amateur bands
- Built-in trickle charger for NiMH
- Simple operation with visual feedback
What customers say
The Comet CAA500MKII SWR Analyzer is highly regarded for its exceptional versatility and ease of use across HF, VHF, and UHF bands due to its wide frequency coverage. Users consistently praise the intuitive design, which pairs a clear analog SWR meter with a precise digital display for impedance and frequency. This dual display facilitates quick and accurate tuning adjustments. Reviewers also note the robust, professional build quality, suggesting excellent durability for both home and portable operation. While the initial cost is significant, most operators feel the analyzer’s reliability and comprehensive performance justify the investment as a long-term tool. Overall satisfaction remains very high, positioning this instrument as a trusted standard for critical antenna work.
Know before you buy
Yes, it features two separate connectors to maintain signal integrity. You will use the SO-239 connector for the 1.8MHz to 300MHz range and the N-type connector for the 300MHz to 500MHz range.
Absolutely. The unit runs on six AA batteries and provides up to 10 hours of operation, making it well-suited for portable antenna tuning and field diagnostics.
The analog cross-needle meter provides an immediate, intuitive look at your SWR and impedance, while the full-color LCD offers precise, detailed graphic data for more complex analysis.
Yes, the device allows you to perform manual sweeps and overlay up to five different results on the screen, which is very helpful for comparing antenna performance across different heights or orientations.
No, the internal trickle charger is designed specifically for NiMH rechargeable batteries. You should not attempt to charge standard alkaline batteries using this feature.
Yes, the CAA-500MKII covers a wide frequency range from 1.8MHz to 500MHz, making it a versatile tool for testing antennas across HF, VHF, and UHF amateur radio bands.
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