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When a signal of 10 mV at 75 MHz is to be measured then what instrument can be used?
When a signal of 10 mV at 75 MHz is to be measured then which of the following instrument can be used
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.
What is the bandwidth of a signal that ranges from 40KHz to 4 MHz?
Solution Let fh is the highest frequency and fl is the lowest frequency. Bandwidth = fh - fl = 4000 - 40 KHz = 3960 KHz = 3.96 MHz
What is indirect method of FM transmitter?
indirect FM transmitter is the transmitter which indirected connectly to the FMINDIRECT FM GENERATIONWhile it is not possible to vary the frequency of a crystal oscillator directly, it is possible to vary its phase. The resulting PM signal can be used to create FM. This is the basis of the Armstrong modulator.The mathematics required to analyze the Armstrong modulator completely are complex, so we will discuss only the basic circuit operation. An audio signal is passed through a preemphasis network and then an integrator, a special network whose output is the time integral of the input signal. The preemphasized integrated signal is used to phase modulate a crystal oscillator. Mathematically, it can be shown that PM using the integral of the audio signal is identical to FM using the audio signal itself. In this way an FM signal is generated.The Armstrong modulator cannot produce much deviation, so combination of multipliers and mixers are used to raise the carrier frequency and the deviation. The multipliers are used to multiply the carrier and the deviation. The mixers are used to decrease the carrier, while keeping the deviation constant so that additional multiplier stages can be used to obtain more deviation. It is worth going through an example:An FM station is authorized to operate at 90.9 MHz, with maximum deviation of 75 KHz. The FM signal is generated with an Armstrong modulator whose output is 500 KHz with a deviation of 15.432 Hz. The modulator output is applied to 3 triplers and a doubler to obtain a frequency of 81 MHz and a deviation of 2.5 KHz. The 81 MHz signal is mixed with a 77.97 MHz signal to produce a 3.03 MHz signal whose deviation is still 2.5 KHz. This signal is fed through a doubler, tripler and quintupler to multiply the carrier to 90.9 MHz and the deviation to 75 KHz.
How do you change from 27 mhz to 49 mhz?
all you have to do is change the 27 mhz crystal to a 49 mhz crystal: it looks like this: picture of crystal at this link: http://www.taydaelectronics.com/servlet/the-268/27.000-MHz-27-MHz/Detail
The wavelength of a radio signal broadcast at a frequency of 99.0 MHz is?
The wavelength of a 99.0 MHz signal is about 9.94 feet.
What is the frequency of a150 meter radio wavelength?
The frequency of a 150 meter radio wavelength can be calculated using the formula: frequency = speed of light / wavelength. For a 150 meter wavelength, the frequency would be approximately 2 MHz (megahertz).
What is the frequency of an audio signal?
around 150-180 Mhz or something around there
What is the wavelength of a 145 MHz radio signal?
Just divide the speed of light (300 million meters/second) by the frequency, remembering that MHz means "millions of hertz".
What is the wavelength of an electromagnetic wave that travels at 3x10x10x10x10x10x10x10x10 ms and has a frequency of 60 MHz?
Wavelength is calculated in MHz not Hz, and the formula is Wavelength = 300 / MHz
The frequency of a wireless signal is 249 MHz What is the wavelength in meters?
Wavelength = (speed) / (frequency) = (3 x 108) / (249 x 106) = 1.205 meters (rounded)
What station would have the longer wavelength 90.5 MHz or 107.1 MHz?
The station with 107.1 MHz would have the longer wavelength.
What has a shorter wavelength kaja at 97.3 mhz or woalat 1200khz?
The shorter wavelength is kaja at 97.3 MHz. This is because wavelength is inversely proportional to frequency, so the higher the frequency, the shorter the wavelength. Woalat at 1200 kHz has a longer wavelength compared to kaja at 97.3 MHz.
What radio station sends a signal with a wavelength of 3.25 meters?
Frequency = speed/wavelength = 3 x 108 / 3.25 = 92.3 MHz. In the US, that frequency is in the commercial FM broadcast band (88 - 108 MHz). There are many FM stations, in many different cities, on that frequency.
What is the wavelength of a 900 MHz signal in free space?
The wavelength of a 900 MHz signal in free space is approximately 0.333 meters. This can be calculated using the formula: wavelength = speed of light / frequency, where the speed of light is 3 x 10^8 meters per second.
BBC radio 1 wavelength?
{| ! | FM: 97.7 MHz - 99.7 MHz |}
What is the frequency of a radio wave 2m in a wavelenght?
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".)
