Direction is the shape of the transmission pattern. As the gain of a directional antenna increases, the angle of radiation usually decreases. This provides a greater coverage distance, but with a reduced coverage angle. The coverage area or radiation pattern is measured in degrees. These angles are measured in degrees and are called beamwidths.
1. (Units) Also called: long ton Brit a unit of weight equal to 2240 pounds or 1016.046909 kilograms. 2. (Units) Also called: short ton or net ton US a unit of weight equal to 2000 pounds or 907.184 kilograms. 3. (Units) Also called: metric ton or tonne a unit of weight equal to 1000 kilograms. 4. (Units) Also called: freight ton a unit of volume or weight used for charging or measuring freight in shipping.
The UK Weights and Measures Act 1985 explicitly excluded from use for trade many units and terms, including the ton and the term metric ton for tonne. In the United States and formerly Canada a ton is defined to be 2,000 pounds (907 kg). Where confusion is possible, the 2240 lb ton is called long ton and the 2000 lb ton short ton; the tonne is distinguished by its spelling, but usually pronounced the same as ton, hence the US term metric ton.