ET A School HF Receiver with 100% correct answers(latest update)

1A2A3C3 What does "1" represent? Unit 1 1A2A3C3 What does "2" represent? Assembly A2 1A2A3C3 What does "3" represent? Subassembly A3 1A2A3C3 What does "4" represent? Part C4 Define System? Combination of sets, units, groups, sub-assemblies, assemblies, and parts joined together to perform 1 or several operational functions. Define Group? Collection of units, assemblies, subassemblies, and parts. Define Assembly? Any # of subassemblies and parts connected to perform a specific function. Define Set? Units & associated assemblies, sub-assemblies & parts connected to perform a specific function. Define Part? 1 or 2 components joined together. Define Subassembly? 2 or more parts that form a portion of an assembly or a unit. Another word for part? Component Reception? Electromagnetic wave passes through the receiver antenna & induces a voltage in the antenna. Selection? ability to distinguish a particular frequency from all other frequencies. Detection? Extraction of the intelligence from RF signal. Reproduction? Conversion of electrical signals to sound waves that can be heard by the ear. Sensitivity? Measure of a receivers ability to reproduce very weak signals. Noise? Limiting factor on the minimum usable signal that the receiver can process & still produce a usable output. Selectivity? Ability to distinguish between a signal @ desired frequency, and signals @ adjacent frequencies. Fidelity? Receivers ability to reproduce the input signal accurately. Which 2 characteristics of a carrier signal may be altered for modulation purposes? Amplitude & Frequency. Which characteristic of the RF signal contains the intelligence when using AM? Amplitude. Which characteristic of the RF signal contains the intelligence when using FM? Frequency. What does the term demodulation refer to? Separating the carrier & Intel. In the Input Filter Assembly 1A1, what are the undersired signals that the assembly filters? Above 30MHz How many dB of signal rejection are provided by 1A1 Input Filter Assembly above 30 MHz? 100 dBs In what assembly is the BITE test signal generated? 1A1 Input Filter Assembly In what assemblies do IF conversions take place and what are the frequencies outputted from each? 1A2 1st Converter Assembly 1A3 2nd Converter Assembly List the assemblies where audio is detected. 1A5 1A18 List the assemblies that provide Local Oscillator signals and frequency range for that assembly. Synthesizer Assembly - 40.469-70.455MHz Reference Generator Assemblies - 40MHz BFO is about what frequency and offset by how much? 455KHz +/-10KHz Which Front Panel push-button should be utilized to change the attack/decay times of the Automatic Gain Control circuits? AGC Speed Push Button Which front panel push-button should be utilized to change the bandwidth? BW Which front panel push-button should be utilized to return the receiver to receive mode after the BITE test has been completed? RCV