QuestenaÜben und erkennen, was als Nächstes dran ist
Frage 464

Orthogonal frequency-division multiplexing (OFDM) is a technique used for which types of amateur communication?

  1. Digital modesRichtige Antwort
  2. Extremely low-power contacts
  3. EME
  4. OFDM signals are not allowed on amateur bands

Erklärung

OFDM spreads a data stream across many closely spaced subcarriers, and amateurs use it in digital modes that need higher throughput or resistance to multipath, such as wideband HF data and mesh networking equipment. Nothing in the rules prohibits it, and it is not tied to very low power work or to moonbounce.

Mit diesem Test weitermachen

Übung starten
Frage 464: Orthogonal frequency-division multiplexing (OFDM) is a… · FCC Amateur Extra Class (Element 4) · Questena