Construction Coordinator Practice Exam

What is the typical gain of a line extender measured in decibels (dB)?

1. 10 to 20 decibels (dB)

2. 20 to 25 decibels (dB)

3. 28 to 35 decibels (dB)

4. 35 to 40 decibels (dB)

The correct answer is: 28 to 35 decibels (dB)

The gain of a line extender typically falls within the range of 28 to 35 decibels (dB). This range is critical to understand because line extenders are designed to amplify signals over long distances, ensuring that the integrity and strength of the signal are maintained when it reaches its final destination. A gain of 28 to 35 dB is effective for compensating for the signal losses that occur due to cable length and other factors in the transmission medium. Within this range, line extenders can provide sufficient amplification without introducing excessive noise or distortion, which can degrade the quality of the transmitted signal. The other ranges provided, while they may reflect gains for different types of equipment or specific conditions, do not typically apply to line extenders used in standard applications. For instance, gains below 28 dB might not meet the amplification needs for longer runs of cable, while gains above 35 dB could reach levels that introduce distortion or noise in the system. Understanding this typical range is crucial for construction coordinators and signal technicians when selecting the appropriate equipment for a given installation.