What is the purpose of a "dummy load"?

The purpose of a "dummy load" is to simulate a proper load for transmitting equipment during testing without broadcasting a signal. When testing or adjusting radio transmitters, it’s essential to ensure that they operate correctly without radiating signals that could interfere with other communication systems or violate regulations. A dummy load acts as a resistor that absorbs the electrical power produced by the transmitter, thereby allowing the technician to monitor the transmitter's performance safely and effectively, verifying that it is functioning as intended without emitting any radio frequency (RF) energy into the air. This is crucial for maintaining compliance and ensuring that the equipment is in optimal working condition before actual transmission.