For safety, what should the chassis of each piece of station equipment be connected to?

Connecting the chassis of each piece of station equipment to a good ground connection is essential for safety in amateur radio operations. This grounding serves multiple important functions. First, it helps to disperse any stray electrical currents that may occur due to faults or surges, thereby protecting both the equipment and the operator from potential electric shocks.

A proper ground connection also aids in reducing electromagnetic interference (EMI) by providing a stable reference point for the electrical signals and helps to ensure that any signals transmitted are more effective and clearer. Additionally, grounding is crucial in preventing equipment from floating at a high voltage, which can happen if it is not securely bonded to the earth, leading to unsafe operating conditions.

The other choices highlight scenarios that do not address safety adequately. A strong antenna does not mitigate electrical hazards, a high voltage source can increase risk rather than reduce it, and an insulated cover provides no electrical connection to ground. Thus, maintaining a good ground connection is vital for both operational efficiency and personal safety in amateur radio setups.