FLUKE 4119-50

Contact plating (finish) provides corrosion protection for base metals and optimizes the mechanical and electrical properties of the contact interfaces.

Operating frequency is the frequency at which the communications are being made with the total bandwidth occupied by the carrier signal with modulation. Usually bandwidth of the antenna will be wider than the bandwidth of the signal so that more than one center frequency the antenna can be put in to effective use.

In electrical engineering, impedance is the opposition to alternating current presented by the combined effect of resistance and reactance in a circuit.