Question
What digital protocol is used by APRS?
Answer Options
- A) PACTOR
- B) QAM
- C) AX.25
- D) AMTOR
Correct Answer: C
Explanation
APRS (Automatic Packet Reporting System) is a comprehensive system designed for real-time tactical digital communications, mapping, and information exchange, commonly used on VHF/UHF. It relies on packet radio to transmit data bursts containing location, telemetry, and status information.
APRS uses the AX.25 digital protocol, which is the standard protocol for amateur radio packet communications. AX.25 is an adaptation of the X.25 data-link layer protocol for amateur use, and it manages the framing, error checking, and addressing of the data packets that carry the APRS information.
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