FM radio signals are directional, so tuning in weak signals can depend to a great deal on the antenna you're using to tune them in. The simple dipole antenna design is easy to make from basic materials and provides a big step up in performance from a simple wire antenna. In addition, ...
When there's bad weather that knocks out electricity and cell phone towers, the radio station (on a generator) can still give you pertinent information if you have a battery-powered radio. TheFM receiver chips in cell phones are finally getting activated, so you can listen to local radio on...
Disconnect the antenna, if it's already attached to the radio, by pulling oot the antenna plug from the jack usually found on the back of the tuner. Alternately, it might be necessary to loosen a screw or screws that serve as the antenna terminals on the tuner to release the wire. Unta...
FM radio was invented by Edwin Armstrong in order to make high-fidelity (and static-free) music broadcasting possible. He built the first station in 1939, but FM did not become really popular until the 1960s. Hence the higher frequencies for FM radio. Radio Frequency Scanners Most radios ...
Range for FM band transmitters It is not possible to have hundreds of miles of range on FM broadcast band (87.5MHz to 108MHz), even if terrain is perfectly flat and you have your antenna on the top of the mountain and you’re using many KW of power. It is occasionally possible due ...
A crystal earphone: This simple precursor to earbuds connects directly to the antenna diode. To make the process easier, some kits are also available online containing most of the necessary parts in the box. The Home Science Tools crystal radio kit also comes with an electric amplifier, making...
Let’s design a 1 MHZ dipole antenna. Selection of Length of the Dipole Antenna As we know that the wavelength of a radio wave or any other wave varies inversely proportional to the frequency. it is given by: (1) Where, C = velocity of light = ...
Electromagnetic waves that reach the antenna of the radio cause the electrons in the antenna to move. This in turn creates a signal that the radio can... Learn more about this topic: Applying Physics to Communications Technology from Chapter 4/ Lesson 1 ...
The rovers each use two antennas for communication: a high-gain antenna that can steer itself to beam information toward an antenna on Earth, and a low-gain antenna that can receive and send information from every direction at a lower rate than the high-gain antenna. All these communications...
The rovers each use two antennas for communication: a high-gain antenna that can steer itself to beam information toward an antenna on Earth, and a low-gain antenna that can receive and send information from every direction at a lower rate than the high-gain antenna. All these communications...