Course AM transmission and receiving technology

Includes:

• 1 Experiment card with AM modulator/demodulator, AM modulator switchable between AM/DSB, product demodulator and diode detector
• 1 Experiment card with AM receiver and HF input stage
• 1 Experiment card with AM IF (intermediate frequency-), LF (low-frequency) amplifier
• 1 Experiment card with Colpitts-/Hartley-Oscillator
• Storage case
• Labsoft browser and course software

Course contents:

• Introduction to the design and function of Hartley- and Colpitts oscillators
• Tuning oscillators
• Introduction to principles of capacitive and inductive feedback
• Investigation of resonance conditions (self-excitation) by measurement
• Design and investigation of an AM transmitter
• Tuning an oscillator and measuring various degrees of modulation
• Measuring the frequency response of the output voltage of an oscillator
• Design and investigation of an AM receiver
• Introduction to the principle of receiver design
• Tuned radio frequency receivers
• Superhet receivers
• Automatic gain control AGC
• Automatic frequency control AFC
• Investigation of a phase discriminator (Foster-Seeley) by measurement
• Introduction to the terms signal-to-image ratio (far-off selectivity) with and without pre-selector stage
• Demonstration and determination of the image frequency in superhet receivers by measurement
• Investigation of filter curves of high-frequency input stages IF amplifiers by measurement
• Determination of adjacent-channel selectivity
• Design of a medium-wave AM single stage superhet receiver with full-range tuning
• Course duration 4.5 h approx.