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Some CB operators use special directional antennas such as a horizontal beam antenna sending the signal to the ionosphere at an angle which helps them to make distant contacts or DX.Some CB operators use special directional antennas such as a horizontal beam antenna sending the signal to the ionosphere at an angle which helps them to make distant contacts or DX. Technically this activity is forbidden by the FCC on CB. However, operators using legal power limits are not actively sought out with any punitive action.