VHF FM broadcasting provides significantly higher quality than traditional broadcasting on low frequency bands using amplitude modulation. However, the frequency range in which FM radio stations operate provides a relatively small radius of reliable reception, at the border of which its quality drops sharply.
It is necessary
- - a piece of wire several meters long;
- - plug;
- - metal clip for curtains;
- - soldering iron, solder and neutral flux;
- - OIRT-CCIR converter;
- - antenna amplifier or active antenna.
Instructions
Step 1
In some cases, unstable reception in the VHF range is due to the low sensitivity of the receiver or radio. It should be noted that there is no dependence of this parameter of the device on its price. Try to receive the same station in the same room with several receivers - the one that will provide the most reliable reception is the most sensitive one.
Step 2
It is possible to indirectly determine the mediocre quality of the radio path of the receiver by the presence of an antenna socket, despite the fact that it has a telescopic antenna. If there is such a socket, the manufacturer could have added it precisely in order to compensate for the low sensitivity.
Step 3
An external antenna is a piece of wire several meters long. Unwind it completely. To one of the ends of the wire, solder either a plug, the type of which corresponds to the type of socket on the receiver, or a metal clip for curtains, put on the telescopic antenna. So that such an antenna does not need to be supplied with lightning protection, in no case make it external.
Step 4
Sometimes the following tool can help improve FM reception. Wrap about 20 turns of insulated wire directly over the sheath of the coaxial cable going to your TV. Connect one of its ends to the receiver in the manner indicated above.
Step 5
Pocket players and mobile phones use a headphone or headset wire as an antenna when receiving FM radio stations. Change this accessory to another one with a longer wire, or grow it yourself if you know how to do it. The quality of reception and the number of received radio stations will increase significantly.
Step 6
Often, even in the city center, the receiver receives very few radio stations just because it is designed for the VHF-1 range (65 - 74 MHz), while most stations today operate in the VHF-2 range (88 - 108 MHz). Rebuilding the device from one range to another is a very painstaking operation, so you should only take on it if you have the necessary experience. In the absence of such experience, a special attachment will help - the CCIR-OIRT converter. This device is commercially available on radio markets.
Step 7
You can improve the quality of reception in the FM range of a car radio using an antenna amplifier or an active antenna. When choosing this device, it should be remembered that often under the guise of such amplifiers "dummies" are sold, in the cases of which there is nothing but a resistor and an LED. Therefore, they should be purchased only in company stores.
Step 8
Some people like to use the car radio at home by connecting it to the power supply and speakers. There is a misconception that in this case it will work well without an antenna. But, having connected even a very short antenna to the radio tape recorder, everyone can be convinced of the opposite.
