G8B - Signals and Emissions
General Class
Frequency mixing and heterodyning: image frequencies, spurious signals
11 questions
What is another term for the mixing of two RF signals?
What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?
Which intermodulation products are closest to the original signal frequencies?
What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?
What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?
Why is it important to know the duty cycle of the mode you are using when transmitting?
Why is it good to match receiver bandwidth to the bandwidth of the operating mode?
What is the relationship between transmitted symbol rate and bandwidth?
What combination of a mixer’s Local Oscillator (LO) and RF input frequencies is found in the output?
What process combines two signals in a non-linear circuit to produce unwanted spurious outputs?
Which of the following is an odd-order intermodulation product of frequencies F1 and F2?