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Հարց 151

Where should the negative power return of a mobile transceiver be connected in a vehicle?

  1. At the 12-volt battery chassis groundՃիշտ պատասխան
  2. To the shell of the power connector
  3. To any metal part of the vehicle
  4. Through the transceiver’s mounting bracket

Բացատրություն

The transmit current must return by a low-resistance path, so the negative lead runs directly back to the battery's chassis ground connection rather than through body panels, brackets or the connector shell. Those alternative paths add resistance and noise and can drop the supply voltage under load.

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Հարց 151: Where should the negative power return of a mobile… · FCC Technician Class (Element 2) · Questena