Diamond Antenna SX-400 SWR/Power Meter
Diamond Antenna SX-400 SWR/Power Meter
The Diamond SX-400 SWR/Power Meter is a precision in-line RF measurement instrument designed to monitor standing wave ratio (SWR) and forward/reverse RF power in real time during transmitter operation. Built for amateur radio operators and HF/VHF station use, the SX-400 provides reliable visual feedback to optimize antenna matching, minimize reflected power, and protect transceiver output stages from high SWR conditions.
Featuring a rugged mechanical meter movement with dual scales, the SX-400 makes it easy to interpret SWR and power readings simultaneously—without requiring electronic displays or external power.
Ideal for:
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HF and VHF Station Monitoring
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Antenna Tuning & Matching Verification
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Transmitter Output Protection
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Portable Field Deployments
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Repeater and Base Station Diagnostics
12 Months of Brand Warranty