Surge Protectors With UHF Connectors

Two very common "gas tube" ratings that are non exaggerated ratings where a gas tube will arc:

600 Volt Tube
At 1:1 about 1600 Watts, at 1.5:1 about 1100 Watts, at 3.0:1 about 700 Watts

230 Volt Tube
At 1.1 about 250 Watts, at 1.5:1 about 175 Watts, at 3.0:1 about 100 Watts