It is the school shielding device of cell phone jammer

It is the school shielding device of cell phone jammer 
Shows that its product shape and structure of success. The flip phone shown in Figure 2-1 (d). Figure 2-1 (d) flip phone 4. Turn / rotate to cover the phone flip cover phone with a screen cover can be opened and then rotated 180 degrees. This can be used with a stylus, and functional operation on the screen. Phones with camera, flip the screen when the camera is also easy to observe the subject object. Figure 2-1 (e). There is more to the rotation to cover mobile phones, rotated 180 degrees, revealing a button, and start using. The flip cover 55 Figure 2-1 (e) of the flip cover phone. The candy bar phone candybar phone is the phone screen and keypad in the open face, the phone keypad, the screen naked. The shielding range of the high power  cell phone jammer  is about 50-130m.
A manual prototype, respectively, must make a handmade prototype production technology to support the completion of the design and assembly drawings and part drawings, often called to do the palm. A single palm use of 3D CNC machine tools (CNC) production. Shouban out co-unit to do the drawings on the main points to explain. To ensure that the time to do right. Formal mold production technology to support the formal mold making technical support mold in the mold making process architect to fully integrate the design intent is passed to the mold maker addition to the drawings, but also direct verbal communication, intermediate links as possible. This is to ensure that the mold produced correct point. To measure and identify the parts of the mold and other home-made samples. But it is still suggested that people should be about one meter away from  cell phone jammer .
The built-in antenna is a metal piece, but there are also professional plant production, can be used. External antenna protruding outside the machine affect the appearance, has the basic need. Multilayer ceramic chip package antenna is also widely in the application. An incoming call ringtone device. Shell to leave it on the hole sound transmission. Separate with the speaker in order to power saving in standby. Its size by hardware engineers, antenna theory to calculate. Structural design to resolve installation issues. The location of the antenna is generally mounted to the top of the phone. There are two feed point antenna and motherboard, an antenna module output and the other is the RF ground.