Dirt and other contamination on the connector interfaces can affect the performance of the RF components. To clean the connector interfaces, use only pure isopropyl alcohol as a cleaning solvent. Do not use excessive amounts of alcohol, as this prolongs drying time. Apply the alcohol with a foam-tipped swab instead of cotton swabs, because the cotton can become lodged in the connector.

Use low-pressure compressed air to remove foreign particles and to dry the connector. After cleaning, verify that the center pin has not been bent or damaged.