First, choose coaxial switches with high-quality materials and excellent manufacturing processes. Low-loss connectors, such as precision SMA or N-type connectors, can reduce signal attenuation at the interfaces. Ensure that the switch's internal conductors are made of materials with high conductivity, like oxygen-free copper, to minimize resistance-related signal loss.

During installation, make sure all connections are tight and free from oxidation. Use torque wrenches to tighten connectors to the manufacturer-specified torque values, as loose connections can cause impedance mismatches and increased attenuation. Additionally, avoid sharp bends or kinks in the coaxial cables connected to the switch, as these can distort the electromagnetic field and lead to signal degradation. Keep the cable length as short as possible to reduce cumulative losses.

Periodically clean the coaxial switch and its connectors to remove dust, moisture, and contaminants. Oxidation on the connector surfaces can increase contact resistance and attenuation. Use specialized contact cleaners and non-abrasive materials for cleaning. Check for any signs of wear or damage, such as cracked insulators or corroded conductors, and replace the affected components promptly.

Ensure that the impedance of the coaxial switch, cables, and connected devices is properly matched. Mismatched impedances cause signal reflections, which contribute to attenuation. Use impedance-matching devices like stubs or transformers if necessary. Calibrate the system regularly to maintain optimal impedance matching across the operating frequency range.

High temperatures can increase the resistance of conductors and thus signal attenuation. Operate the coaxial switch within its specified temperature range and consider using cooling measures if needed. Protect the switch from moisture, humidity, and corrosive environments, as these can degrade the performance of the switch and its components over time.