What method is used when a transmitter's output power is read directly from a wattmeter?

The method used when a transmitter's output power is read directly from a wattmeter is known as the direct method. This approach involves taking a measurement that reflects the actual output power being delivered by the transmitter at its antenna feed point. A wattmeter provides a real-time reading, allowing for accurate monitoring of the power levels being transmitted. This direct measurement is essential for ensuring compliance with regulatory power output limits and for efficient troubleshooting of broadcast systems.

The direct method stands in contrast to other potential methods where calculations or estimates would be used instead. For example, in the estimated method, one might use assumptions or averages instead of actual measurements. Similarly, the feedback method generally relates to systems that utilize feedback loops for adjustments rather than direct output readings. The calculated method typically involves deriving values based on known parameters and formulas, rather than simply measuring the output directly. Therefore, the direct method is the most reliable and straightforward approach when obtaining power readings from a transmitter.