Many of us are faced with poor reception 3G connection.Homemade antenna for 3G modem - an option out of the situation.And it is not so important to have a connector for it on your device or not, because we offer you the option of solutions for such equipment, where it is, and for which it is not.
antenna modem is capable of amplifying a weak signal.Let's start with the most simple method of its manufacture.Take the copper wire, and is about three to four turns around the your device.It is best to do them at the tip of it, because there is a built-in antenna reception.
For the test we have a modem, which showed -107 decibels.When winding copper wire increased rate of so-called "palkomera", while enrollments increased to -101 dB.This antenna for 3G modem with your hands requires clear action.After all, you yourself have to choose the length, thickness and number of turns of wire.For example, the additional length or loop can both improve and reduce the quality of signal reception.
antenna modem: the second option.It is called pan or colander.All fans of the experiments, which are brought to despair faint-speed access, inventing various exotic designs in the image pans, screens, and a satellite dish.This version is slightly better than the previous one, but this antenna for modem will require much more time.
should be noted that with the device often includes a wire extension.Its length, usually from three to five meters.At the end of a small piece of double-sided tape, with which the modem is attached near a window or wall.Instruction is also provided by the device manufacturer.By the action of such an antenna modem option is similar to the wire, which was considered by us in the beginning.
following method - cupping.First, it is often used in networks WI-FI.With this method, craftsmen able to stretch the network over a distance of several kilometers between the access points.So, take the empty cans and produce some simple calculations.
Here is an example of this calculation.The diameter of the cans (D) equals one hundred millimeters.The wavelength is 143 millimeters Lo, respectively Lo / 4 will be equal to approximately 36 millimeters.Wavelength Lg equal to 261 mm, and Lg / 4 is equal to approximately 65 millimeters.Therefore, at a distance of 65 millimeters from the bottom of our banks make a hole in which we fix a standard socket.To this soldered waveguide length equal to 36 millimeters.It must be of a copper wire having a diameter of two millimeters.
now taken cable television braided thereto attached antenna connector that plugs into the bank, on the other hand - jack for the modem.
And if there is no connector?In this case, you can disassemble the unit and to find on the board measuring socket.To him soldered shielded wire of small diameter.Thereby you output adapter to connect it to the antenna.But it should be done very carefully so as not to lose the guarantee of a modem or not to withdraw it completely unusable.
