Simplex operation vs repeater operation in terms of range, reliability, and channel usage on a typical VHF/UHF net.

• A. Simplex uses a single frequency with limited range; repeater uses a paired frequency to extend range and improve signal quality.
• B. Simplex uses direct, full duplex communication.
• C. Simplex requires a repeater to extend range; repeater uses a single frequency.
• D. Both use the same technology and yield identical results.

Answer: (C)