Wavelength = speed/frequency = 3 x 108/100 x 106 = 3 meters (in vacuum)
The wavelength of a 99.0 MHz signal is about 9.94 feet.
Frequency = speed/wavelength = 300,000,000/2 = 150,000,000 = 150 MHz. (The ham-radio band from 144 to 148 MHz is usually called the "two-meter band".)
A Radio Wave within the RF spectrum range of 4200 - 4400 MHz
The numbers in an FM radio station represent the frequency the station transmits the signal on. The frequency range for FM band radio stations is from 87.5 MHz to 108.0 MHz. These radio frequencies are considered VHF or Very High Frequency. The difference between AM and FM radio is that in AM radio the Amplitude is Modulated, or changed to send the signal, whereas with FM, the Frequency is Modulated or altered to send the signal.
Just divide the speed of light (300 million meters/second) by the frequency, remembering that MHz means "millions of hertz".
The wavelength of a 99.0 MHz signal is about 9.94 feet.
49 MHz (mhz) is the main radio frequency of the signal that controls a radio-controlled (RC) car. I hope that answers your question. :)
Frequency = speed/wavelength = 300,000,000/2 = 150,000,000 = 150 MHz. (The ham-radio band from 144 to 148 MHz is usually called the "two-meter band".)
GPS uses radio frequency signals in the L1 (1575.42 MHz) and L2 (1227.60 MHz) bands for its signal transmission.
To determine the wavelenght of a signal, invert it. This would take 88.9 MHz, invert it (1/88.9) giving you 0.01125 microseconds. Now, determine the speed of the signal. Generally, for an FM radio signal, the speed is the speed of light, which is 3 x 108 meters per second. So multiply 0.01125 by 3 x 108, giving 3.75 meters. The question asked for nanometers, so multiply by 1 x 109, giving 3.75 x 109 nanometers for a signal frequency of 88.9 MHz.
A Radio Wave within the RF spectrum range of 4200 - 4400 MHz
The numbers in an FM radio station represent the frequency the station transmits the signal on. The frequency range for FM band radio stations is from 87.5 MHz to 108.0 MHz. These radio frequencies are considered VHF or Very High Frequency. The difference between AM and FM radio is that in AM radio the Amplitude is Modulated, or changed to send the signal, whereas with FM, the Frequency is Modulated or altered to send the signal.
Just divide the speed of light (300 million meters/second) by the frequency, remembering that MHz means "millions of hertz".
Radio signals at frequencies up to roughly 40 to 60 MHz are absorbed or reflected from the ionosphere. At higher frequencies, the signals easily penetrate the ionosphere and continue on into space. This is the reason that AM radio (1 MHz) and "short-wave" broadcasts (4-13 MHz) are often received from great distances, but TV (54 MHz and up) and FM radio (100 MHz) are not.
A short wave radio signal at 20 MHz falls within the High Frequency (HF) band, which is typically used for various military communications. Specifically, it is part of the 2 to 30 MHz frequency range. The military often utilizes specific sub-bands within this range for tactical communication and other operational purposes. Thus, a 20 MHz signal would be relevant in military HF operations.
To calculate the intermediate frequency (IF) for a radio receiver at 70 MHz, you typically choose a fixed IF value such as 455 kHz or 10.7 MHz. The IF frequency is chosen in such a way that when the desired signal frequency (70 MHz) is mixed with the local oscillator signal, it falls within the receiver's bandwidth for demodulation. This allows for effective filtering and processing of the signal at a manageable frequency before demodulation.
Let's take an example. Suppose that the intermediate frequency is 10,7 MHz (FM). The local oscillator works on 110,7 MHz. First case: You receive a signal of 100 MHz, the mixer will generate a frequency of 110,7 + 100 = 210,7 MHz, which will be rejected by the band-pass filter. The difference of the two frequencies is 110,7 - 100 = 10,7 MHz (desired one). Second case: You receive a signal of 121,4 MHz. The sum of that frequency and the local oscillator is 232,1 MHz, which will be rejected. The difference is 121,4 - 110,7 = 10,7 MHz. So the image frequency in that case is going to be 121,4 MHz.