Homemade FM Radio Antenna

Antennas are devices that receive electromagnetic waves and convert them into electrical currents and vice versa. Antennas are quite an old application, as the use of antennas dates back to the latter half of the nineteenth century. Scientists like Thomas Edison and Heinrich Hertz have used antennas for scientific activities during this period. Antennas are widely used in information systems such as the radio, television, wireless local area network and radar.

Let's start with the concept of FM technology. FM is the abbreviation for frequency modulation. The father of this broadcasting technology is Edwin Howard Armstrong (1890-1954). The FM technology aims at transmitting superior quality sound to the listeners of FM radio stations. Some of the small scale applications of FM technology include: FM transmitters, wherein the transmission of a signal from an audio device is done to a FM radio receiver. FM microphones are another example of the application of the FM broadcast band. Making a homemade FM radio antenna is not a difficult task. With the proper understanding of the procedure and all tools at hand, you can perfectly do this work.

Materials to Build FM Antenna
In order to make FM antenna, you require a three meter long wire, an antenna, insulating tape and radio lead wiring.

Steps in Making FM Radio Antennas

• Before starting with the actual installation process, remember that higher the frequency of the FM channel is, lower should be the length of the wire. Suppose the FM channel is between the frequency of 87-90, the length of your wire should be around 3-3.5 meters.
• The first step is to cut the wire into two parts and remove the insulation from the both the ends of the wire.
• Now prepare a frame for the wires in order to hold the antenna and see that the length of the main arm of your antenna is large enough to support the wires.
• Now move the wires along with the main support of the frame so as to form a loop. Solder the wires at the place where the support arm ends and cap the joined ends with the help of an insulating tape.
• Take care you do not join the wires at the bottom of the loop.
• Now, cut and remove the insulation of a radio lead wiring and solder to the ends where the wires are open, and cap it with the help of an insulation tape.
• The last step is to just connect the radio and the antenna lead. Do this by plugging the antenna lead into the radio.

You must have realized how easy it is to make a homemade FM radio antenna. Moreover, by doing it yourself, you are not only saving the installation costs but also learning something new. This could also help you in guiding your friends and relatives in this regard. One disadvantage associated with this is that, the frequency of your homemade FM radio antenna is going to get disturbed on account of external interference from other radio stations from the vicinity, or devices such as pagers and walkie talkie devices. However, the excellent sound quality that FM provides makes it the most preferred technology amongst the radio lovers.