What is the purpose of using a "dummy load" in amateur radio?

• A. To measure signal strength
• B. To simulate an antenna
• C. For training new operators
• D. To avoid interference

Answer: (B)

Using a dummy load in amateur radio serves the important purpose of simulating an antenna without radiating a signal into the atmosphere. This allows operators to conduct tests and experiments safely and effectively, especially when they need to check equipment functionality or tune transmitters. A dummy load typically consists of a resistor that converts the transmitter's power into heat instead of broadcasting it. This helps prevent unwanted interference with other communications and provides a controlled environment for tuning or testing equipment while ensuring compliance with regulations against unwanted signal transmission.

While other options touch on various aspects of amateur radio operations, they do not capture the primary function of a dummy load. For instance, measuring signal strength requires actual signal transmission to gauge, which a dummy load would not allow. Training new operators generally involves practical, hands-on learning that may not require the use of a dummy load specifically. Lastly, while using a dummy load can help avoid interference, the core use of the device remains the simulation of an antenna for testing purposes.