Basic Qualification · B-005 Basic electronics and theory · B-005-013-007
Quel instrument permet la lecture directe de la puissance à la sortie d'un émetteur?
- AUn wattmètre RF
- BUn ondemètre
- CUn mesureur de champ
- DUn ampèremètre
Correct answer: A — Un wattmètre RF. Question tirée de la banque officielle d'ISDE.
Why
An RF wattmeter is the only instrument listed that directly measures the actual power, in watts, flowing from your transmitter to the antenna. The full explanation — and one for every question — is in Pro.
Practise this section
Basic electronics and theory is section B-005 of the Basic exam: The theory: Ohm's law, power, series and parallel circuits, AC and DC, frequency and wavelength, decibels, and the metric prefixes the exam leans on.
Drill B-005 — free, no account