Electronics Technician Second Class ET2 Practice Exam 2026 – Complete Test Prep

The correct answer indicates that a loss of receiver sensitivity has a similar effect on range performance as a loss in transmitter power. Both sensitivity and power output are crucial factors in determining the effective communication range between a transmitter and a receiver.

Receiver sensitivity refers to the minimum signal level that a receiver can detect effectively. If the sensitivity decreases, the receiver will struggle to detect weaker signals, which inherently limits its effective range. Similarly, if there is a reduction in transmitter power, the initial signal strength sent out by the transmitter is diminished, which can also result in weaker signals being received. The two losses directly correlate, as both impact the overall signal strength received at the end point, thereby reducing the communication range.

In contrast, the other choices relate to different aspects of electromagnetic wave propagation or system performance. Though they might influence communication effectiveness, they do not share the direct relationship with range performance as seen with receiver sensitivity and transmitter power. For instance, changes in receiver bandwidth affect the range differently by determining how much of the signal spectrum can be processed, while signal integrity loss would address the clarity and quality of the signal rather than the raw signal strength. Frequency error relates to how close the transmitted frequency is to the expected frequency, which can cause difficulties in demodulation but