IT-4109 Frequency Modulation Receiver Trainer

IT-4109 is designed to analyze the Techniques of Frequency De-Modulation using Analog signals. Trainer also contains an FM Radio Receiver with AFC. Frequency demodulators are also included to study the wired Frequency modulation / demodulation techniques.

Description

IT-4109 is designed to analyze the Techniques of Frequency De-Modulation using Analog signals. Trainer also contains an FM Radio Receiver with AFC. Frequency demodulators are also included to study the wired Frequency modulation / demodulation techniques.

 

Features:

Power Supply Included

Required Circuits Tested

Each Section Clearly Marked for Input and Output

Each Section Works as an Independent Unit

Input Devices like Antenna and RF Amplifier Included

Output Devices like Speaker and Low Pass Filter Included

Complete FM Radio (88MHz – 108MHz) Receiver Included

FM Demodulation Techniques Explored

 

Technical Features:

FM Demodulator Types:

  • Detuned Resonant
  • Quadrature Detector
  • Foster -Seeley
  • Ratio – Detector
  • Phase Locked Loop
  • FM Radio

Carrier Frequency: 455 KHz

Low Pass Filter: 5th Order Butterworth @ 3.4 KHz

Amplifier: AC Amplifier with adjustable gain

Audio Amplifier: Monolithic Type

Speaker: 8 Ohm with ON/OFF Control

 

FM Radio

Sensitivity: <150mV

FM Tuning Range: 88 – 108MHz

FM IF: 10.7MHz

Detector: Ratio Detector

IF Amplifier 1: First FM IF Amplifier

IF Amplifier 2: Second FM IF Amplifier

Oscillator: FM Oscillator with mixer

Amplifier: FM RF Amplifier with AFC Stage

Antenna: FM Telescopic Antenna

Gang: AM/FM Gang for Tuning

Interconnections: 2 mm gold plated pins

Accessories: Power cord, Experiment Manual, Set of 2mm patch cords

 

Experiments included:

Main characteristics of an FM transmission system

Detuned resonant demodulator

Quadrature demodulator

Phase Locked Loop demodulator

Foster-Seeley Demodulator

FM Radio Ratio Detector

Static Measurements

Dynamic Measurements

Ratio Detector Alignment

Second FM IF Amplifier

First FM IF Amplifier

FM RF Amplifier, Mixer, Oscillator, And AFC Stage

FM Mixer Static Measurements

FM Mixer Dynamic Measurements

FM Oscillator Static Measurements

FM AFC

FM RF Amplifier Measurement

FM Final Alignment