E4B10:Which of the following methods measures intermodulation distortion in an SSB transmitter?
Direct answer summary (2024-2028 NCVEC pool)
The official correct answer for E4B10 is Modulate the transmitter using two AF signals having non-harmonically related frequencies and observe the RF output with a spectrum analyzer.
The key fact is Modulate the transmitter using two AF signals having non-harmonically related frequencies and observe the RF output with a spectrum analyzer. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.