Antenna

Receiver antenna is a tool to capture signals , FM radio reception for remote antenna is mostly Yagi (YAGI) antenna , Yagi antenna, the number of cells directly affect the reception range , unit number , the more, the direction of the more acute the

Posted at 11-12-23 by Sky views(34634)

Ceramic gas discharge tube using sealed package, in the discharge gap is filled into the appropriate gas medium (argon or neon gas) , together with the high activity of the electron emission materials and discharge ignition institutions , is a specia

Posted at 11-12-23 by Sky views(2703)

First, understanding the quasi-parabolic and parabolic line Parabola is a plane to a fixed point F and line a distance equal to the L locus of points. Shown in Figure 1, the plane to a point F and F is a fixed straight line, but the distance L equal

Posted at 11-12-23 by Sky views(3981)

And like to play on the VHF / UHF ham, most prefer to do their own antenna system, and more than a two, because the V / U section, good or bad for the transceiver antenna effect is very large, and also the cable loss very powerful, which requires the

Posted at 11-12-23 by Sky views(5677)

J -pole (J please Click here to get our dipole antenna -Pole) antenna consists of a 1 / 2 wave transmitting element and a 1 / 4 wave matching device driver structure, which is equivalent to a dipole antenna driven from the end , because the condu

Posted at 11-11-23 by Sky views(11656)

Amateur Radio in the quarter -wavelength antenna should be the most simple and the results are not that bad of a radio antenna in the world where it occupies a considerable proportion , for example if you pay attention to it most of the police car an

Posted at 11-11-23 by Sky views(4334)

Gamma Match Plans please Click here to get our dipole antenna

Posted at 11-07-11 by Sky views(8009)

Many users are making a lot of firing circuit boards , also used a lot of the antenna , but enthusiasts are always looking for high-efficiency transmitting antenna , the following description of this cross is a television or radio antenna used in tra

Posted at 11-11-23 by Sky views(5427)

The Super J-Pole Antenna(Collinear Design) Below is a Javascript for calculating the lengths of tubing to be used for the construction of a Super J-Pole. The antenna I constructed was made of 1/2 tubing. please Click here to get our dipole antenna

Posted at 11-07-19 by Sky views(8452)

The easiest way to free a coil around a metal radiator connected to the bottom , and then launched , with the standing wave table to see SWR, slowly correct number of turns , will use the following can be 1:1.5 . Efficiency Well , not easy to say , y

Posted at 11-10-27 by Sky views(1350)