Assignment:
Question 1. You are asked to build an AM receiver with a 15 micro H inductor which must tune from 500 to 880 kHz. Find the required variable capacitance and the bandwidth at 770 kHz, if the ideal bandwidth at 380 kHz is 10 kHz.
Question 2. A receiver tunes from 20 to 30 MHz using a 10.7 MHz IF. What is the range of the oscillator and image frequencies?
Question 3. A super-heterodyne receiver tunes the band of frequencies from 4-10 MHz. The IF is 1.8 MHz. The double-ganged capacitor used has a 325 pF maximum capacitance per section. The tuning capacitors are at the maximum value (325 pF) when the RF frequency is 4 MHz. Calculate the required RF and local oscillator coil inductance and the required tuning capacitor values when the receiver is tuned to receive 4 MHz.
Question 4. A single side band transmission consists of a 770 Hz sine wave and its second and fourth harmonics. Suppose that the receiver's de-modulator has drifted 10 Hz. Find the resulting speaker output frequencies.
Question 5. A 1000 W single side band signal is fully modulated. What is the power transmitted?
Question 6. A SSB transmitter uses a 9 MHz crystal RF frequency oscillator and a 4 MHz medium frequency oscillator. What are the output frequencies of the medium frequency balanced modulator? What filter Q is required in the linear power amplifier? The intelligence signal is a 4 kHz tone.
Question 7. An SSB signal is generated around a 200-kHz carrier. Before filtering, the upper and lower side bands are separated by 200 Hz. Calculate the filter Q required to obtain 40-dB suppression.
Provide complete and step by step solution for the question and show calculations and use formulas.