T9A07:What is a potential drawback of using a handheld VHF transceiver inside a vehicle that lacks an externally mounted antenna?
Direct answer summary (2026-2030 NCVEC pool)
The official correct answer for T9A07 is Signal strength is reduced due to the shielding effect of the vehicle.
The key fact is Signal strength is reduced due to the shielding effect of the vehicle. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.