# 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:

-   HF and VHF Station Monitoring
    
-   Antenna Tuning & Matching Verification
    
-   Transmitter Output Protection
    
-   Portable Field Deployments
    
-   Repeater and Base Station Diagnostics

## Details

- **Price:** 12500.0 INR
- **Vendor:** Diamond
- **Type:** SWR Power Meters
- **Tags:** Diamond, rf-measuring-instruments, swr-power-meters

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 12500.00 INR | In stock |

## Images

- Diamond Antenna SX-400 SWR/Power Meter - RFCharge

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> Source: [RFCharge](https://rfcharge.com/products/diamond-antenna-sx-400-swr-power-meter)
> Updated: 2026-04-28