0
What else can I help you with?
Why do you use a delayed AGC?
The disadvantage of automatic gain control, attenuating even the weak signal, is overcome by the use of delayed automatic gain control (dagc).
What type of oscillator used in handwatches?
a crystal 32.768kHz oscillator.
Principle of peak AGC system?
A peak-based AGC system, such as is required for SSB, will reduce the receiver gain by 6 dB as the modulating percentage increases from 0% to 100%. A receiver with a peak-responding AGC system will, in theory, cause a gain reduction as modulation percentage increases and a gain increase as the modulation level decreases. (Thanks to Clifton Laboratories 7236 Clifton Road Clifton VA 20124 tel: (703) 830 0368 fax: (703) 830 0711 E-mail: Jack.Smith@cliftonlaboratories.com)
What is blocking oscillator?
The oscillator which is blocked by using transformer is called a blocking oscillator. Generally, the primary is given to the base and secondary is given to the collector of the transistor used in the oscillator circuit.
How do you reduced second channel interference on superheterodyne receiver?
To reduce second channel interference in a superheterodyne receiver, one effective approach is to employ a narrowband filter at the intermediate frequency (IF) stage, which helps to eliminate unwanted signals outside the desired frequency range. Additionally, careful design of the local oscillator can minimize image frequency interference by ensuring that the IF frequency is sufficiently separated from the local oscillator frequency. Using high-quality components and proper shielding can also help reduce spurious responses and improve overall selectivity. Lastly, implementing automatic gain control (AGC) can help manage varying signal levels, further mitigating interference.
Why do you use a delayed AGC?
The disadvantage of automatic gain control, attenuating even the weak signal, is overcome by the use of delayed automatic gain control (dagc).
What is an AGC function in a receiver?
An AGC (Automatic Gain Control) function in a receiver automatically adjusts the gain of the incoming signal to maintain a constant output level. This helps in preventing signal distortion or overload in the receiver, ensuring a consistent and reliable reception of signals.
AGC is used in which of the stage?
Recievers
Why does an FM receiver not need an AGC feedback path?
An FM receiver does not need an Automatic Gain Control (AGC) feedback path because frequency modulation is less affected by amplitude variations in the received signal. FM demodulation primarily relies on changes in frequency rather than amplitude, allowing the receiver to maintain consistent audio quality regardless of signal strength. Consequently, the need for AGC to manage varying signal amplitudes is minimal, as the demodulated audio remains relatively unaffected by these fluctuations.
Can a radio receiver be located with a detector?
Yes, a radio receiver can be located with another receiver or tracer, most radio receivers is of the regenerative type and it has a local oscillator that is used to generate an intermediate (IF) signal of 465Khz on shortwave and 10.7Mhz on the higher frequencies like a FM or TV receiver, that oscillator is like a low power transmitter that is transmitting an un-modulated RF signal. Any nearby receiver can pick up this signal although no sound will be heard on the receiver, to be able to hear a signal the tracer is equipped with a BFO, (Beat Frequency Oscillator) that will generate an audible tone when a signal is received, the same way as the local oscillator generate the IF signal but only in the audible frequencies and a signal strength meter, then with a directional antenna, the receiver that is to be traced can be pin pointed.
What type of oscillator used in handwatches?
a crystal 32.768kHz oscillator.
Applications of wien bridge oscillator?
A Wein Bridge Oscillator is a oscillator which is used for the measurement of Audio Frequency.
The FM receiver is tuned 98.3 mhz if 10.7 mhz local oscillator frequency is?
The question probably should be, "If the FM receiver is tuned to 98.3MHz and the IF (intermediate frequency) is 10.7MHz, then what frequency is the local oscillator running at?" The answer would be 87.6MHz but i could be 109MHz and would still work. The local oscillator is mixed with the received signal and what comes out contains both the sum and the difference of the two frequencies. The amplifiers that follow are highly tuned to the IF and so only that frequency is amplified and demodulated by the receiver.
Principle of peak AGC system?
A peak-based AGC system, such as is required for SSB, will reduce the receiver gain by 6 dB as the modulating percentage increases from 0% to 100%. A receiver with a peak-responding AGC system will, in theory, cause a gain reduction as modulation percentage increases and a gain increase as the modulation level decreases. (Thanks to Clifton Laboratories 7236 Clifton Road Clifton VA 20124 tel: (703) 830 0368 fax: (703) 830 0711 E-mail: Jack.Smith@cliftonlaboratories.com)
What is blocking oscillator?
The oscillator which is blocked by using transformer is called a blocking oscillator. Generally, the primary is given to the base and secondary is given to the collector of the transistor used in the oscillator circuit.
How do you reduced second channel interference on superheterodyne receiver?
To reduce second channel interference in a superheterodyne receiver, one effective approach is to employ a narrowband filter at the intermediate frequency (IF) stage, which helps to eliminate unwanted signals outside the desired frequency range. Additionally, careful design of the local oscillator can minimize image frequency interference by ensuring that the IF frequency is sufficiently separated from the local oscillator frequency. Using high-quality components and proper shielding can also help reduce spurious responses and improve overall selectivity. Lastly, implementing automatic gain control (AGC) can help manage varying signal levels, further mitigating interference.
Why ujt used as an oscillator?
why ujt used as amplifier
