The quality of TV and radio signals does not always suit viewers and listeners. Moreover, interference can be even when there is a seemingly powerful antenna. In order to improve the quality of reception, the antenna must be properly tuned.
It is necessary
coaxial cable, portable radios or mobile phones
Instructions
Step 1
The effective antenna height is one of the most important parameters that determine its sensitivity. Therefore, to improve reception, raise the antenna as high as possible above the ground, whether it is radio or television.
Step 2
If the antenna is directional, try re-positioning it so that there are no obstacles between it and the signal source. Such obstacles can be high-rise buildings or other structures, power lines, and so on. You can try to fine-tune the direction to the signal source. To do this, you can use the help of an observer who monitors the signal at the receiver. To communicate with him, you can use portable radio stations or a mobile phone.
Step 3
If you have a directional antenna with flat polarization (like "Wave channel" and the like), check the polarization of the received signal. Adjust it according to the received data. To do this, you need to rotate the antenna about the axis directed to the signal source. In most cases, simply trying to rotate the antenna 90 ° is sufficient.
Step 4
Antenna efficiency can be increased by using an antenna amplifier. But in this case, the gain limit is set according to the noise level. To reduce their level, use a shielded reduction, that is, the antenna is best connected using a coaxial cable.
Step 5
Antenna performance, especially when receiving long, medium and short wavelengths, can be improved by installing additional grounding. It should also be borne in mind that the antenna must be matched in impedance with the input circuit of the radio receiver. That is, it must be connected with the type and brand of cable that are recommended in the instructions for the receiver or TV.
