A transmitter has a power output of 125 watts. There is a loss of 0.8 dB in the transmission line, 0.2 dB in the antenna tuner, and a gain of 10 dBd in the antenna. The Effective Radiated Power (ERP) is:

Why

Start by combining the losses: 0.8 dB plus 0.2 dB equals 1.0 dB lost in the feedline and tuner. The full explanation — and one for every question — is in Pro.

Practise this section

Feedlines and matching is section A-007 of the Advanced exam: Feedlines and matching at the advanced level: transmission line theory, impedance transformation, stubs and matching networks.

Cette question en français · All A-007 questions