What is the received signal level with a transmit power of 10 W (+40 dBm), a transmit antenna gain of 6 dBi, a receive antenna gain of 3 dBi, and a path loss of 100 dB?
-51 dBm✓Correct answer
-54 dBm
-57 dBm
-60 dBm
Explanation
In a decibel link budget gains are added and losses subtracted, so +40 dBm + 6 dBi + 3 dBi − 100 dB gives −51 dBm at the receiver input.