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Radio Antennas work best when the diameter of the antenna is equal to the wavelength of its radio wave Reasonable antennas range from 1 cm-5 m in diameter What frequency range fits the antenna range?
Wiki User
∙ 15y ago
1 cm= .01 m C=?v 3.00 x 108 m/s= .01 m (v) v= 3.00 x 1010 Hz C=?v 3.00 x 108 m/s= 5 m (v) v= 6.00 x 107 Hz Frequency range: 3.00 x 1010 Hz - 3.00 x 107 Hz
Wiki User
∙ 15y ago
Wiki User
∙ 15y ago1 cm= .01 m C=?v 3.00 x 108 m/s= .01 m (v) v= 3.00 x 1010 Hz C=?v 3.00 x 108 m/s= 5 m (v) v= 6.00 x 107 Hz Frequency range: 3.00 x 1010 Hz - 3.00 x 107 Hz
Wiki User
∙ 15y ago1 cm= .01 m C=λv 3.00 x 108 m/s= .01 m (v) v= 3.00 x 1010 Hz C=λv 3.00 x 108 m/s= 5 m (v) v= 6.00 x 107 Hz Frequency range: 3.00 x 1010 Hz - 3.00 x 107 Hz
Wiki User
∙ 15y ago1 cm= .01 m C=λv 3.00 x 108 m/s= .01 m (v) v= 3.00 x 1010 Hz C=λv 3.00 x 108 m/s= 5 m (v) v= 6.00 x 107 Hz Frequency range: 3.00 x 1010 Hz - 3.00 x 107 Hz
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Does 60Hz fall into the range of RF waves used by commercial broadcasting?
No. That would be technologically difficult, and very unwise.-- In order to transmit efficiently, the length of a transmitting antenna must be an appreciablefraction of a wavelength. The easiest to handle are 1/2-wavelength horizontal wire antennas,and 1/4-wave or 5/8-wave vertical antennas, including towers. The wavelength at 60 Hzis 5 million meters, or roughly 3,100 miles.-- With every utility power line, extension cord, toaster, and baseboard heater in North Americaradiating a small signal at 60 Hz, the interference environment for anyone trying to receivea clear newscast on a pocket portable at 60 Hz would be quite unfavorable.The lowest frequency used for commercial broadcasting in the Americas is the low endof the AM dial ... 550,000 Hz, with a wavelength of 545 meters (0.34 mile).
Why the antenna of radio are vertical?
Not all radio antennas are vertical.The main reason radio antennas tend to be vertical is convenience of mounting. Many early radio antennas were long horizontal wires strung between two poles or trees. This was also a matter of convenience in mounting such a long antenna (e.g. 50 feet to 100 feet in length).When you are operating radios in the VHF or UHF band a vertical or horizontal mounting of the short antennas used at these frequencies might be selected to improve reception of a polarized radio signal sent by the transmitter.
What antenna do I need for my CB radio?
The main thing to remember for CB radio antennas is that taller antennas will work better. If this is for a vehicle, select a tall antenna where at least 50 percent of it will be above the roof line. You will have the best range this way.
Why is a wire wrapped around GM radio antennas?
The spiral shape lessens wind noise created by typical cylindrical shaped antennas masts. It is there for passenger compartment noise reduction only, and has nothing to do with the noise or clarity of the radio signal it receives.
Why are ferrite bar antennas often used for the AM band while whip antennas are often used for the FM band?
The ideal length for a simple antenna is approximately 1/2 of a wavelength. At VHF FM frequencies this will be about than 1.5m long. On the AM band, a much longer whip antenna will be required (100m+). Not very practical. The ferrite rod is placed inside a coil of wire producing a simple loop antenna with the ferrite helping to intensify its magnetic properties producing a relatively compact antenna solution.
Radio Antennas often work best when the diameter of the antenna is equal to the wavelength of the radio wave Reasonable antennas range from 1 cm to 5 meters in diameter What frequency range does this?
c=wavelength*frequency f=c/λ
How far apart should you place the midpoints of the antennas?
half the wavelength of the lowest frequency
What polarization are AM antennas?
It depends on the frequency, not the type of modulation. However, in view of the wavelength of medium waveband transmissions and h.f. transmissions the antennas are always horizontal and therefore so is the polarisation.
Is an antennas length dependent on the frequency used?
Yes.
Maxwell's Laws have the requirement of equilibrium. Why is equilibrium ignored in the application of such laws e.g. fractional wavelength antennas when a wavelength represents equilibrium?
Because of practical considerations. Unit wavelength antennas are usually impractical. Compromises are needed to provide useful solutions.
What is the relationship between frequency and antenna height?
For horizontal antennas operating below 30 MHz the optimum height is half a wavelength, so the height in metres would be 149.9/Frequency in MHz.
Does Heat have shorter wavelengths than visible light?
No. Heat is infrared radiation ("infra" means "lower"). Lower frequency means longer wavelength. All radiation is captured by antennas that resonate at the frequency of the radiation. The "antennas" for visible light are electrons that use the radiation to jump into excited states and cause optical neurons to fire. The "antennas" of heat (infrared) are bigger -- they are molecules that jiggle faster when the radiation hits them. That jiggling is heat.
Why car antennas are as long as TV antennas?
The length of an antenna is based on what frequency it is designed to send or receive. The higher the freq. the shorter the antenna. For instance, cell phone antennas are very short while AM radio antennas are long. CB antennas are 18 feet long but there are many exceptions where people have tried to design shorter versions that will still work well.
What types of products does the Wilson's Antennas company offer to consumers?
Wilson's Antennas company offers the highest performing CB Antennas to customers. This includes Base Load Antennas, Trucker Antennas and Fiberglass Antennas.
Do millipedes have antennas?
no,they do not have any antennas
Does every insect have antennas?
Yes.Every insect does have antennas.
In wireless communication to exchange information two antennas must be tuned to the same?
frequency
