How do I choose the right wattmeter element (slug)?

Start with your system’s frequency and power level. Each Bird element is marked with both. Choose an element that matches your frequency and matches or slightly exceeds your expected power range.

How often should I calibrate my wattmeter?

Annual calibration is recommended for reliable results, especially in regulated or safety-critical environments. Bird also offers factory calibration services for its RF wattmeters.

What if I’m constantly switching frequencies?

Consider a digital wattmeter. The Bird 4480A covers a wide frequency range without requiring element changes, making it a good fit for fast-paced, multiband RF work.

What’s better—an analog or digital wattmeter?

The right choice depends on your application. Analog wattmeters such as the Bird 43 are rugged, simple, and require no external power, making them useful for quick field measurements. Digital wattmeters provide direct numerical readings, wider frequency coverage, additional measurement data, and models that do not require element changes.

Trusted. Tested. Field-Proven.

CW Wattmeters

Built for dependable performance—not lab-perfect specs—Bird’s CW Wattmeters remain a trusted standard in RF testing. These analog workhorses have supported critical communications in defense, broadcasting, and land mobile radio for decades.

They offer practical accuracy for everyday power measurement—especially in high-power, analog, or stable CW systems. With swappable elements, one tool covers a wide range of frequencies and power levels.

They’re not made for digital signals or fine-tuned precision—but they’re built to last, built to travel, and built to deliver results when reliability matters most.

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When it has to work, trust Bird.

The Standard in RF Power Measurement

Since 1952, RF professionals have trusted Bird’s CW wattmeters to deliver reliable, repeatable results—day in and day out. Built to last and engineered for accuracy, these tools are the benchmark for analog RF measurement. When your system matters, Bird is what you reach for.

See the Problem, Solve It

Forward and reflected power readings reveal mismatches, bad connections, and antenna faults—before they cause damage.

Dial In with Confidence

Fine-tune your antenna and transmitter for optimal VSWR and performance—with live, in-line power feedback.

One Meter, Every Job

Swap elements to match frequency and power range. Take it anywhere—from bench setups to field deployments.

New to RF Power Measurement?

Pick the Right Wattmeter in 3 Steps

You don’t need to be an expert to pick the right Bird CW wattmeter. Just follow these three steps to find the tool that fits your work.

Know Your Frequency

Every wattmeter is designed for a specific frequency range. Make sure it covers the band you’re working in.

Check Your Signal Type

If you're working with AM, SSB, or pulsed signals, choose a peak power model like the 43P or 4314C.

Decide on Flexibility

Need to measure across multiple bands? Go with a swappable-element model like the 43. Sticking to one setup? A fixed-element model is a solid fit.

CW Wattmeter FAQs

Have more questions? Get Expert Help>

What is a CW wattmeter?

Why do technicians continue to use the Bird Model 43?

How do you choose the right element for a CW wattmeter?

Trusted in RF Since 1948

Why RF Pros Choose Bird

Bird wattmeters are the standard for accurate, durable RF power measurement. From analog tools to peak power models, professionals trust Bird when it has to work—every time.

Proven Wattmeters. Trusted Results.

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CW Wattmeters