Advanced Qualification · A-007 Feedlines and matching · A-007-006-010
A transmitter has an output of 2000 watts PEP. The transmission line, connectors and antenna tuner have a composite loss of 1 dB, and the gain from the stacked Yagi antenna is 10 dBd. What is the Effective Radiated Power (ERP) in watts PEP?
- A16 000
- B18 000
- C20 000
- D2009
Correct answer: A — 16 000. From the official ISED question bank, verified word for word.
Why
A 1 dB loss cuts your 2000 watts down to roughly 1600 watts reaching the antenna, and adding the 10 dBd gain multiplies that result by ten to reach 16 000 watts effective radiated power. 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.
Drill A-007 — free, no account