Advanced Qualification · A-005 Transmitters, modulation and processing · A-005-008-007
APRS (Automatic Packet Reporting System) does NOT support which one of these functions?
- AAutomatic link establishment
- BTwo-way messaging
- CTelemetry
- DAmateur-specific local information broadcast
Correct answer: A — Automatic link establishment. From the official ISED question bank, verified word for word.
Why
Automatic link establishment requires a protocol that can negotiate connections and manage handshakes, which APRS does not do because it relies on simple, unacknowledged packet broadcasts. The full explanation — and one for every question — is in Pro.
Practise this section
Transmitters, modulation and processing is section A-005 of the Advanced exam: Transmitters, modulation and processing: AM, FM, SSB, keying, speech processing, and the numbers behind occupied bandwidth.
Drill A-005 — free, no account