NRSWA Operative Practice Questions - NRSWA Street Works Operative Units (City & Guilds 6167 SWQR) Exam

When a Cable Avoidance Tool (CAT) is set to Radio (R) mode, what frequency range is it designed to detect?

Very Low Frequency (VLF) radio signals between 15 kHz and 30 kHz re-radiated by long metallic conductors 50 Hz power distribution frequencies emitted by high-voltage transformers Microwave frequencies above 2.4 GHz emitted by wireless telecommunication towers Direct current (DC) magnetic fields from cathodic protection systems

Correct Answer:

Very Low Frequency (VLF) radio signals between 15 kHz and 30 kHz re-radiated by long metallic conductors

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