What is the effective isotropic radiated power (EIRP) of a repeater station with 200 watts transmitter power output, 2 dB feed line loss, 2.8 dB duplexer loss, 1.2 dB circulator loss, and 7 dBi antenna gain?
Explanation
Losses add to 2 dB + 2.8 dB + 1.2 dB = 6 dB, leaving 7 dBi − 6 dB = +1 dB net. Since the gain is given in dBi the result is EIRP: 200 W × 101/10 = 200 × 1.259 = 252 watts.