This practical resource allows students to investigate the principles and operation of a working superheterodyne receiver, through a range of practical activities.

Practical tasks include the following:

• Measuring the intermediate frequency (IF) and local oscillator (LO) frequency of a superhet receiver
• Exploring the radio frequency (RF) amplifier
• Measuring the bandwidth of an intermediate amplifier stage
• Measuring tuned gain of an intermediate amplifier stage
• Recognising the function performed by a multistage IF amplifier
• Determining the need for automatic gain control (AGC)
• Observing the operation of AGC

Please note that this card requires access to an Electronics Study Trainer (320-00).