Extra exam question E2A08
Subelement E2, OPERATING PROCEDURES· Group E2A
Why should effective radiated power (ERP) be limited to a satellite that uses a linear transponder?
- A.To prevent creating errors in the satellite telemetry
- B.To avoid reducing the downlink power to all other users (correct answer)
- C.To prevent the satellite from emitting out-of-band signals
- D.To avoid interfering with terrestrial QSOs
WhyEffective radiated power should be limited on a satellite using a linear transponder to avoid reducing the shared downlink power available to every other user. A linear transponder divides its total downlink power output among every signal present in its passband at once, so a station transmitting with excessive effective radiated power grabs a disproportionate share of that shared downlink power and crowds out everyone else using the satellite at the same time, answer B. It's not primarily about telemetry errors, out-of-band emissions, or terrestrial interference, those are different concerns from how a shared linear transponder's downlink power gets divided.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
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