43-UHF, Broadband RF Wattmeter (UHF)
Model 43-UHF
Broadband RF Wattmeter
The Trusted Standard in RF Power Measurement.
The Bird Model 43-UHF is a legacy RF wattmeter that’s been trusted for decades in field and bench environments around the world. Its fully analog design provides clear, directional power measurements using a simple, mechanical interface that technicians have relied on for generations. With quick-change elements and a rugged metal housing, the Model 43 continues to deliver lasting value for routine RF testing, tuning, and service work.
Why Choose the 43-UHF?
Reliable, Directional Power Measurement
The Model 43-BNC uses a precision directional coupler to measure forward and reflected RF power.
Field-Proven Durability
Built with a rugged metal housing, shock-mounted meter movement, it’s trusted to perform in harsh environments year after year.
Modular and Easy to Use
With Bird’s plug-in elements, you can adapt to different frequency bands and power levels.
How It Works - Simple, Passive, Proven
The Model 43-UHF measures RF power using a passive, mechanical design built around two key components: a directional coupler and an analog meter movement. This architecture provides direct analog readings with low insertion loss, high durability, and consistent performance across a wide range of RF systems.
Passive RF Power Measurement
Sample directional RF energy through a precision coupler and convert it to analog needle movement.
Forward & Reflected Power Detection
Measure power in both directions by rotating the plug-in element ideal for load matching, tuning, and reflection analysis.
Directional Power Sampling
Separate forward and reflected power using a high-directivity coupler trusted by generations of RF professionals.
Enduring RF Measurement Standard
Decades after its introduction, the Model 43-BNC remains a trusted tool across public safety, broadcast, and defense.
Specifications
- Power Range: 100 mW to 5 kW
- Frequency Range: 450 kHz to 1.2 GHz
- Accuracy: ±5% of reading
- Connectors: UHF (F)
