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IF frequencies are used rather than RF frequencies because it is easier to design a bandpass amplifier that is tuned to a specific frequency range than one that is variably tuned during operation. This is the basis behind the superheterodyne design. The local oscillator is the only thing that is tuned in the RF stage. Everything else is wider band and relatively fixed. Also, circuit design at RF frequencies is more prone to parasitic capacitance and inductance, making the task more complex.
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What frequencies falls in the range of RF waves used by commercial controlled by the?
No frequencies in that range appear on the list you provided with the question.
What is the difference between Radio Frequency and intermediate frequency?
RF -radio frequencies are high frequencies, IF freq's are lower frequencie.It purely depends on system what are the frequencies used. as a example if ur using 30 GHZ as the RF, then if u downconvert these to some thing around 2GHz, now RF is 30 GHZ, IF1 is 2GZ---etc. if u have sytem of using freq as 2GHz, downconvert to some thing around 10 MZ, now RF for a given system is 2GHz, IF is 10 MHz.i hope u understood
What is Specification for Mazda r2 engine?
its the best 2.2L diesel engine rather than the RF version. this is japan made while the RF is not.
What is the Bit capacity of frequencies?
ok, that's a very open ended question. Are we talking light frequencies like for fiber optics or are we talking radio frequencies like for RF transmissions?
Which one of the following frequencies falls in the range of RF waves used by commercial radio broadcasting stations?
See page 101 of your study unit. In there you will find that radio frequencies used by commercial radio broadcasting stations range from about 550,000 Hz to 1,700,000 Hz.
Are TV RF signals analog rather than digital?
In the US and Europe they are almost all digital.
What is RF scanning?
Depending on how it is used, it can have different applications. However, RF scanning is where one runs a receiver through a series of radio frequencies (RF), and tries to identify a specific frequency. It can include illegal operations, such as RF scanning wherein a transmitter is used to transmit a scan to interfere with transmitters such as petrol pumps, or scanning to locate cell or wireless telephone transmissions. Or there can be harmless applications such as simply tuning a radio manually.
What is RF selector switch?
RF refers to 'radio frequency'. A selector switch would select a different range of radio frequencies at each of its positions. RF selector switches would be found on short wave receivers and transmitters.
What is low frequency radiation called?
LF-RF or low frequency radio frequencies. This spans frequencies from just below the AM radio band through the shortwave radio bands.
What is the task of a rf module?
The task of an RF module is to transmit and receive radio signals across a number of frequencies. They are part of a small electrical circuit placed in a radio or similar device.
What is a RF?
RF is short for Right Fielder. In the context of the category where this question was posted, RF probably refers to "radio frequency". "Radio frequency" usually refers to a rate of oscillation in the range of about 30 kHz (30,000 cycles per second) to 300 GHz (300,000,000,000 cycles per second). This is the range of frequencies of electromagnetic signals we call radio waves. Although RF usually refers to electrical rather than mechanical oscillations, mechanical oscillations in this range can also be referred to as "RF" (that use is a bit obscure though).
What frequencies of RF waves are used by commercial radio broadcasting stations?
In the US, the AM broadcast band occupies 550 - 1,700 KHz, with assigned carrier frequencies spaced by 10 KHz. The FM broadcast band occupies 88 - 108 MHz, with assigned carrier frequencies spaced by 200 KHz (0.2 MHz) starting at 88.1 MHz.
