A circuit has 2 cables with 4 dB loss each and an amplifier with a gain of 12 dB. It has one antenna with a gain of 10dBi and the attenuator has a loss of 5 dB. What is the effective gain or loss in the circuit?
A)35 dB gain
B)9 dB gain
C)9 dB loss
D)35 dB loss

Question

Quizplus · Accepted Answer

The circuit has an effective gain of 9 dB.
Key Takeaway: The effective gain or loss in a circuit is additive in nature. The total loss at the cable is (-8 dB). Adding all gains and losses in the circuit ((-8 dB) + 12 dB + 10dBi + (-5 dB)) yields an effective gain of 9 dB.

A Circuit Has 2 Cables with 4 DB Loss Each