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Week 8 has been and gone, with receivers the topic of discussion tonight. Simple crystal set, single stage RF amplifier, audio amplifier etc... Single conversion, double conversion, direct conversion, SSB, CW, FM. How the IF frequency is obtained, why we use it, combinations of local oscillator and received frequency mixing. AGC and de-emphasis in an FM receiver. We finally have the theory test this Friday. This is where it all has to come together. Then regulations and safety.