What is one reason to use an impedance matching transformer at a transmitter output?
To minimize transmitter power output
To present the desired impedance to the transmitter and feed line✓Bonne réponse
To reduce power supply ripple
To minimize radiation resistance
Explication
A transmitter delivers its rated power with minimum reflected power only when it sees the load impedance it was designed for, usually 50 ohms, so a matching transformer transforms the actual load to that value. It is about presenting the right impedance, not about reducing output power.