Diamond Antenna SX600 Dual Power Meter
Best dual-radio monitor for versatile HF, VHF, and UHF station management.
The Diamond Antenna SX600 Dual Power Meter offers unparalleled flexibility for monitoring two transceivers simultaneously. It features switchable metering for distinct frequency ranges: 1.8-160 MHz for Low-Band/VHF and 140-525 MHz for VHF/UHF. This meter accurately displays forward/reflected power and SWR on a single, illuminated sweep meter. With power scales of 5, 20, and 200 watts, it caters to QRP and high-power operations. Notably, it reads both peak and RMS watts, crucial for SSB modes. Its compact size and low insertion loss ensure optimal station efficiency for both base and mobile setups.
$199.99
Owner Satisfaction
4.5
/ 5
Category Rank
284
/ 1072
#284 in Communication Radio Accessories
Price vs Category Average
+100%
Above average
Frequency Range 1
1.8160
/ - MHz
Who it's for
- Operators needing real-time monitoring of signal performance
- Multi-band enthusiasts managing diverse radio equipment
- High-power users requiring robust measurement for heavy-duty setups
Who should skip it
- Field operators lacking access to external DC power sources
- QRP hobbyists requiring precise readings for low-power transmissions
- Budget-conscious buyers seeking basic or entry-level instrumentation
Performance breakdown
Frequency Versatility
Seamlessly covers HF, VHF, and UHF bands for diverse radio setups.
Measurement Precision
Accurate forward and reflected power readings ensure reliable station performance monitoring.
SSB Capability
Peak and RMS power reading modes are essential for voice operation.
Build Quality
Rugged metal construction stands up to both mobile and base environments.
Operational Efficiency
Dual-input switching allows for rapid monitoring of two separate transceivers.
Display Visibility
Illuminated sweep meter provides clear, readable data in low-light conditions.
Key Specs
Frequency Range 1
1.8-160 MHz
Frequency Range 2
140-525 MHz
Power Scales
5 W, 20 W, 200 W
Requires 12 Vdc external power for illumination
Connector Type
UHF female, SO-239
Dimensions
6.000 in. W x 2.000 in. H x 4.000 in. D
Weight
2.00 lbs. (907.185 grams)
Material
Metal
Features
- Switchable dual input for two radios
- Measures forward, reflected power, and SWR
- Reads peak and RMS power values
- Illuminated meter for easy viewing
- Covers HF, VHF, and UHF bands
- Suitable for QRP up to 200W
- Compact for base or mobile use
- Ensures peak station efficiency
What customers say
Amateur radio operators highly regard the Diamond Antenna SX600 for its exceptional reliability and quality construction. Users consistently value the dual sensor, enabling simultaneous monitoring across VHF and UHF bands, which greatly improves operational convenience. The instrument feels professional grade, built for longevity and delivering excellent measurement accuracy. While the initial investment is premium compared to entry level options, serious operators find the precision and durability justify the cost. A minor point noted by some is the illumination feature, which sometimes requires an external power source for best visibility. Overall, the SX600 is considered an essential, dependable tool for accurate high frequency measurements.
Know before you buy
The SX600 features dual inputs, allowing you to connect two transceivers. However, you must use the front-panel switch to toggle between the two inputs, as it does not display both signals simultaneously.
The meter functions for power and SWR readings without external power. You only need to connect a 12 Vdc power source if you want to use the internal illumination for the display.
Yes, the SX600 is specifically designed to read both RMS and peak power, making it an excellent choice for monitoring SSB transmissions where power output fluctuates.
The unit is equipped with standard SO-239 (UHF female) connectors, which are compatible with most common PL-259 coaxial cables used in amateur radio setups.
Absolutely. With a minimum power scale of 5 watts, the meter provides accurate readings for low-power QRP operations as well as higher-power transmissions up to 200 watts.
Yes, its dimensions of 6 inches wide by 2 inches high and 4 inches deep make it compact enough to fit in many mobile radio environments, though it is primarily designed for desktop use.
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$200