A-12. To filter the rf pulses and develop the modulating wave (intelligence) from the modulation
A-13. The current-diode detector is in parallel with the input and load.
A-14. When the input voltage variations are too small to give a usable output from a series detector.
A-15. Emitter-base junction.
A-17. By the collector current flow through R4.
A-18. Emitter-base junction.
A-19. A diode detector followed by a stage of audio amplification.
A-20. C1 and R1.
A-21. Slope detector.
A-22. Converting frequency variations of received fm signals to amplitude variations.
A-23. A double-tuned tank circuit.
A-24. Rectify the rf voltage from the discriminator.
A-26. Suppresses amplitude noise without limiter stages.
A-27. It helps to maintain a constant circuit voltage to prevent noise fluctuations from interfering with
A-28. Limits, detects, and amplifies.
A-29. Both grids must be positively biased.
A-30. Extreme simplicity, few components, and ease of adjustment.
A-31. In the amount and rate of phase shift of the carrier wave.
A-32. Because of the incidental frequency shift that is caused while phase-shifting a carrier wave that is
similar to fm modulation.
A-33. The quadrature grid signal is excited by a reference from the transmitter.
A-34. Detecting the presence of rf energy.
A-35. Pulse amplitude or pulse duration.
A-36. At least 10 times the interpulse period.
A-37. By making the time constant for charging the capacitor at least 10 times the maximum received