Deep Dive: G0A09
The correct answer is B: A calibrated field strength meter with a calibrated antenna. The type of instrument that can be used to accurately measure an RF field strength is a calibrated field strength meter with a calibrated antenna. Accurate RF field measurements require calibrated equipment. For amateur radio operators, this is essential for RF exposure evaluation. Understanding this helps ensure accurate measurements.
Why Other Answers Are Wrong
Option A: Incorrect. Receiver with DSP noise reduction isn't for field strength measurement - it's for receiving signals, not measuring field strength. DSP receiver isn't the instrument. Option C: Incorrect. SWR meter with peak-reading function isn't for field strength measurement - it measures SWR, not field strength. SWR meter isn't the instrument. Option D: Incorrect. Oscilloscope with crystal marker isn't for field strength measurement - it's for waveform display, not field strength. Oscilloscope isn't the instrument.
Exam Tip
Accurate RF field strength measurement = calibrated field strength meter with calibrated antenna. Think 'A'ccurate 'M'easurement = 'A'ppropriate 'M'eter (calibrated). Accurate RF field measurements require calibrated equipment. Not DSP receiver, not SWR meter, not oscilloscope - just calibrated field strength meter.
Memory Aid
Accurate RF field strength measurement = calibrated field strength meter with calibrated antenna. Think 'A'ccurate 'M'easurement = 'C'alibrated 'M'eter. Accurate RF field measurements require calibrated equipment. Essential for RF exposure evaluation.
Real-World Example
RF field strength measurement: A calibrated field strength meter with a calibrated antenna is used to accurately measure RF field strength. The meter and antenna must be calibrated to ensure accurate readings. This is essential for RF exposure evaluation - you need accurate measurements to determine compliance. This is the instrument for accurate RF field strength measurement.
Source & Coverage
Question Pool: 2023-2027 Question Pool
Subelement: G0A
Reference: FCC Part 97.13, FCC OET Bulletin 65
Key Concepts
Verified Content
Question from the official FCC General Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the G0A topic.