Sometimes signal level on an entrance of the radio receiver or TV is insufficient for consistent reception. In these cases use external antennas, including, directed and also antenna amplifiers. Their application is capable to bring closer quality of reception to that which is provided by the collective antenna sometimes.
Instruction
1. For reception on long, average or short waves the external antenna is good. It is a wire up to several dozen meters long, suspended at the height about twenty meters. It is rational to build such construction only in rural areas. The external antenna needs to be equipped surely with a grozopereklyuchatel and to ground during a thunderstorm. Its operation without grounding and a grozopereklyuchatel is not allowed.
2. In the city and also in the absence of desire to establish a grozopereklyuchatel, for reception on the same ranges it is possible to use the room antenna. It is the piece of a wire of several meters laid on a ceiling and if you live not on the first floor - even on a floor. It is optional to ground the receiver at use of such antenna.
3. The frame antenna for reception on short waves consists of one square round of a wire with the party in one meter. Connect the condenser of variable capacity with the top limit of adjustment to this round about 350 picofarads. Attach one of conclusions of this condenser to an antenna entrance of the receiver.
4. Reception on very high frequency on any receiver, except automobile, can be improved by means of the antenna about two meters long. For this purpose take a piece of a wire of the corresponding length and solder a clip to one of its ends. Put on this clip the telescopic antenna of the receiver.
5. The autoradio tape recorder is usually capable to accept stations in two ranges: averages and very high frequency. To increase its sensitivity, it is necessary to use the special antenna having the built-in amplifier. It is necessary to consider that empty boxes on which the light-emitting diode only for the sake of appearances burns are quite often sold under the guise of such amplifiers. Not to run a fake, buy them in the checked places.
6. Television antennas for improvement of reception supply with amplifiers which place in close proximity to them. It is possible to buy the antenna in which the amplifier already is, and it is possible to buy such device for the available antenna. Food on it moves not on a separate cord, and on the same cable by which the antenna is connected to the TV. In the amplifier there is a razvetvitelny device consisting of a throttle through which on it food, and the condenser on which the signal comes to a cable moves. The same splitter is available also in the special antenna plug which is included in the device package. Usually the power supply which is in advance attached to this plug also is applied to it. And here the coaxial cable of length necessary to you should be got separately and to lay from the TV to the antenna with the amplifier independently, being guided by the instruction to the device.
7. That the cell phone worked, say, in the metal construction car better, install on its roof the small television antenna without any amplifier. From her lead Kabel to a car window, unsolder from it the plug, and instead of it solder to the central vein a piece of a wire of eight centimeters. Use phone, holding it near this piece of a wire.