Where should the negative power return of a mobile transceiver be connected in a vehicle?
At the 12-volt battery chassis ground✓Bonne réponse
To the shell of the power connector
To any metal part of the vehicle
Through the transceiver’s mounting bracket
Explication
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.