FM Transmitter and Receiver Trainer has been designed with a view to provide practical and experimental knowledge of Frequency Modulation / Demodulation technique as practically implemented in Analog Communication system on a SINGLE P.C.B. of size 300x400mm.

Object:
To Study Theory of Frequency Modulation & Demodulation:
01. Frequency Modulation via varactor / reactance Modulation.
02. Frequency Demodulation via Detuned Resonant / Ratio / Qudrature / Foster – Seeley / Phase locked loop detector.
03. Separate VCO circuit to demonstrate FM waveform.

Feature:
The board consists of the following built-in parts:
01. POWER SUPPLY : ± 12DC IC Regulated power supply.
02. FM Modulating signal generator : Sine wave
Frequency Range : 300 Hz to 3.4 Khz
Amplitude Range : 0 to 5 Vpp.
03. Modulator Type : Varactor modulator (With carrier frequency adjustment)
: Reactance Modulator (With carrier frequency adjustment)
04. Demodulator : Detuned resonant detector.
: Quadrature detector
: Foster – Seeley Detector
: Ratio Detector
: Phase locked loop Detector
05. Mixer/Amplifier : 1 No. (With gain adjustment) Allows FM input signal to be amplitude modulated by a noise input to demodulation.
06. Low pass Filter : 3.4 KHz. Cut of frequency Amplifier (with adjustable gain)
07. VCO Circuit : FM Wave form demonstrate
08 Test Point : 78
09. Power supply requirement : 230VAC, 50 Hz.
10. On Board Switched Faults : 8 Nos.
11. On Board Amplitude limiter with Amplitude control.
12. Input – Output and Test points provided on board.
13. A self contained Trainer.
14. Effect of noise on the detection of FM signal may be investigated.
Good Quality, reliable terminal/sockets are provided at appropriate places on panel for connections/ observation of waveforms.
Strongly supported by detailed Operating Instructions, giving details of Object, Theory, Design procedures, Report Suggestions and Book References.
Weight : 6 Kg. (Approx.)
Dimension : W 412 x H 150 x D 310

Other Apparatus Required:
Cathode Ray Oscilloscope 20MHz.
Patch Cords

Ltekonline are the manufacturers of Advanced Frequency Modulation and Demodulation Trainer used to demonstrate engineering principles in Engineering Colleges, Engineering Schools and Communication System for Engineering Teaching Lab in Universities