21225373.25 are compact and user friendly learning platforms to provide a modern, portable, comprehensive and practical way to learn
Technology. Each TechBook is provided with detailed Multimedia Product Tutorial which covers basic theory, step by step procedure to conduct the
experiment and other useful information.
21225373.25  AM / FM Radio Receiver is a comprehensive learning solution specifically designed to study and understand the working principle
and basic operation of both types of superheterodyne radio receivers; AM Radio Receiver and FM Radio Receiver. The TechBook provides the
conceptual and step by step understanding of a superheterodyne receiver system through measurement of voltages and observation of
waveforms at various test points. Block wise modular
organization of circuit function with supporting technical information makes it easy to understand the process of AM / FM reception and
demodulation. The exercises conceived to provide a practical approach to the subjects enable a deep analysis of the subjects and will guide the
students to understand each function.

Features

• A self contained TechBook
• Functional blocks with self explanatory waveforms and technical details indicated on board
• On board Tuner provided for tuning the AM/FM transmitting stations
• Interconnections between different section using 2mm patch cords
• More than 50 test points for waveform observation and analysis
• 12 Switched faults for troubleshooting at different functional blocks}Telescopic antenna for reception of AM/FM signal
• On board audio jack provided for Earphone connection
• On board Speaker provided for audio communication
• Product Tutoria

Experirment

• Double Sideband AM Reception and study of Diode Detector
• Single Sideband AM Reception and study of Product Detector
• Operation of the Automatic Gain Control Circuit (AGC)
• To plot Selectivity curve for AM radio receiver
• To plot Sensitivity curve for AM radio receiver
• To plot Fidelity curve for AM radio receiver
• FM Reception and study of Ratio Detector

Technical Specifications

AM / FM Radio Receiver

AM Receiver

Construction : Superheterodyne

AM Frequency Band : 530 KHz – 1650 KHz

Local Oscillator Freq. Range : 980 KHz to 2.060 MHz

Intermediate Frequency (IF) : 455 KHz

Input Circuits : 1. RF amplifier

2. Mixer

3. Local oscillator

4. Beat frequency oscillator

5. IF amplifier 1

6. IF amplifier 2

7. Automatic Gain Control

AM Detectors : 1. Diode detector (for DSB)

2. Product detector (for SSB)

FM Receiver

Construction : Superheterodyne

FM Frequency Band : 88 MHz to 108 MHz

Tuning Range : 96 MHz to 120 MHz

IF Frequency : 10.7 MHz

Input Circuit : 1. RF amplifier

2. Mixer

3. Local oscillator

4. IF amplifier 1

5. IF amplifier 2

6. FM Detector

7. Automatic Frequency Control

Audio Output : Amplifier with speaker
Tuning : Variable capacitor (ganged) dial marking
on board
Receiving media : Telescopic antenna / RF cable
Switched Faults : 12 Nos
Test Points : 50 Nos
Power Supply : 110-220 V AC ±10%, 50/60Hz
Power Consumption : 3VA (approximately)
Interconnections : 12mm Banana sockets
0 0 Operating Conditions : 0-40 C, 80% RH
Dimensions (mm) : W 326 × D 252 × H 52
Weight : 3 Kg approximately
Product Tutorials : Online (on ScientechLearning.com)

Included Accessories :
Patch Cord : 20 Nos
Mains Cord : 1 No
Earphone : 1 No
TechBook Power Supply : 1 No