Diamond Antenna SX-400 SWR/Power Meter
Brand:
Diamond
Diamond Antenna SX-400 SWR/Power Meter
Diamond Antenna SX-400 SWR/Power Meter
Diamond Antenna SX-400 SWR/Power Meter
The Diamond SX-400 is a wideband analog SWR and power meter engineered for accurate measurement of forward power, reflected power, and Standing Wave Ratio (SWR) across VHF and UHF amateur radio frequencies. Covering 140–525 MHz with multiple power ranges and a large illuminated analog meter, it is an excellent instrument for antenna tuning, transmitter verification, repeater maintenance, and station monitoring.
Key Features
- Wideband analog SWR and RF power meter
- Designed for VHF and UHF amateur radio applications
- Frequency coverage from 140 MHz to 525 MHz
- Measures forward power, reflected power and SWR
- Selectable power ranges of 5 W, 20 W and 200 W
- Large illuminated analog meter for easy viewing
- Dedicated SWR and RF power measurement modes
- Simple front-panel calibration for accurate SWR measurements
- High measurement accuracy across the operating frequency range
- 50 Ohm impedance compatible with standard RF systems
- Low insertion loss for minimal signal attenuation
- SO-239 (UHF female) RF input and output connectors
- No external power required for RF measurements
- Heavy-duty directional coupler for reliable performance
- Suitable for antenna tuning and impedance matching
- Compatible with VHF/UHF transceivers, repeaters and power amplifiers
- Compact metal enclosure for long service life
- Provides continuous transmitter output monitoring
- Easy inline installation between radio and antenna
- Ideal for base stations, mobile installations and repeater systems
- Professional-grade Diamond Antenna construction
- Excellent for RF maintenance and troubleshooting
- Designed for continuous-duty amateur radio operation
- Reliable performance for fixed and portable stations
- Precision instrument for VHF and UHF system optimization
Typical Uses
- VHF amateur radio stations
- UHF amateur radio stations
- Repeater installations
- Antenna tuning and matching
- RF power monitoring
- Mobile radio installations
- Station maintenance and testing
In the Box
- Diamond Antenna SX-400 SWR/Power Meter
- User manual
| Brand | Diamond Antenna |
| Model Number | SX-400 |
| Product Type | SWR/Power Meter |
| Frequency Coverage | 140-525MHz |
| Measurement Functions | Forward Power/Reflected Power/SWR |
| Meter Type | Analog |
| Power Ranges | 5W/20W/200W |
| Minimum Power For SWR | 3W |
| Power Accuracy | ±10% Full Scale |
| Impedance | 50 Ohm |
| Connector Type | SO-239 (UHF Female) |
| Connector Quantity | 2 |
| Insertion Loss | 0.1dB Maximum |
| Power Requirement | None |
| Dimensions | 155x63x103mm |
| Weight | Approximately 540g |
| Application | VHF Amateur Radio |
| Application | UHF Amateur Radio |
| Application | Antenna Tuning |
| Application | RF Power Monitoring |