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The most widely used class of antenna, a dipole antenna consists of two symmetrical radiators such as metal rods or wires, with one side of the balanced feedline from the transmitter or receiver attached to each. A horizontal dipole radiates in two lobes perpendicular to the antenna's axis. A half-wave dipole the most common type, has two collinear elements each a quarter wavelength long and a gain of 2.15 dBi. Used individually as low gain antennas, dipoles are also used as driven elements in many more complicated higher gain types of antennas.

How much gain does a half-wave dipole have?
Answer: 2.15 dBi
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Schwarzenegger's endorsement in the Republican primary of the 2008 U.S. presidential election was highly sought; despite being good friends with candidates Rudy Giuliani and Senator John McCain, Schwarzenegger remained neutral throughout 2007 and early 2008. Giuliani dropped out of the presidential race on January 30, 2008, largely because of a poor showing in Florida, and endorsed McCain. Later that night, Schwarzenegger was in the audience at a Republican debate at the Ronald Reagan Presidential Library in California. The following day, he endorsed McCain, joking, "It's Rudy's fault!" (in reference to his friendships with both candidates and that he could not make up his mind). Schwarzenegger's endorsement was thought to be a boost for Senator McCain's campaign; both spoke about their concerns for the environment and economy.

Which candidate withdrew from the presidential race in January of 2008?
Answer: Rudy Giuliani
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At its press conference at the 2007 Tokyo Game Show, Sony announced DualShock 3 (trademarked DUALSHOCK 3), a PlayStation 3 controller with the same function and design as Sixaxis, but with vibration capability included. Hands-on accounts describe the controller as being noticeably heavier than the standard Sixaxis controller and capable of vibration forces comparable to DualShock 2. It was released in Japan on November 11, 2007; in North America on April 5, 2008; in Australia on April 24, 2008; in New Zealand on May 9, 2008; in mainland Europe on July 2, 2008, and in the United Kingdom and Ireland on July 4, 2008.

On what date was the DualShock three released in Australia?
Answer:
April 24, 2008