AMC4 RF Connector Amphenol RF AMC4 RF Connectors offer a PCB surface mount termination, straight orientation, and 50Ω impedance rating. These connectors feature a push-on coupling mechanism and solder contact termination construction. The location of the cavity number and gate may be arranged on the left or right side of the solder tails. Amphenol RF AMC4 RF Connectors provide a 60VAC rated voltage, DC to 6GHz frequency range, and -40°C to +90°C operating temperature.