T4A05:Where should an RF power meter be installed?
Direct answer summary (2026-2030 NCVEC pool)
The official correct answer for T4A05 is In the feed line, between the transmitter and antenna.
The key fact is In the feed line, between the transmitter and antenna. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.