E7C08:Which of the following is most frequently used as a band-pass or notch filter in VHF and UHF transceivers?
Direct answer summary (2024-2028 NCVEC pool)
The official correct answer for E7C08 is A helical filter.
The key fact is A helical filter. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.