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Amplitude Modulation/Demodulation DSB 2401
Kit consists: Inbuilt carrier frequency oscillator, inbuilt 1Kc sine wave oscillator with amplitude control 0-10 Vpp. Transistorized modulating circuit with tank circuit. Demodulation with diode detector with RL and C. Built in supply, mains operated.

Amplitude Modulation/Demodulation DSB SC 2402
Kit consists: Inbuilt carrier frequency generator, inbuilt 1Kc sine wave oscillator with amplitude control, balanced modulator with carrier null control. Demodulator consists, inbuilt local oscillator with crystal lock, product demodulator with low pass filter. Built in supply mains operated.

Amplitude Modulation/Demodulation SSB 2403
Kit consists: Inbuilt carrier oscillator, inbuilt 400 Hz sine wave oscillator with amplitude control, balanced modulator, crystal filter with tuned circuit, synchronous demodulator with LPF. Built in supply, mains operated.

Amplitude Modulation / Demodulation VSB 2404
Kit consists: Inbuilt carrier oscillator, inbuilt 1 Kc sine wave oscillator with amplitude control, balanced modulator, filter consists crystals and tuned circuit, detection by product demodulator with LPF. Built in supply, mains operated.

Frequency Modulation/Demodulation Reactance modulator 2405
Kit consists: 1 MHz, Transistorized oscillator / modulator circuit with buffer amplifier. Demodulation by slope detector. Built in supply, mains operated.

Frequency Modulation / Demodulation VCO type 2406
Kit consists: Frequency generation and modulation by voltage controlled oscillator IC 8038 running at center frequency 20 kHz. Inbuilt phase synchronized 2 kHz modulating oscillator. Detector circuit consists phase lock loop. Built in supply, mains operated.

Pulse Width Modulation / Demodulation 2407
Kit consists: Trigger pulse generator spot frequency, MMV with constant current source to obtain pulse width modulation. Inbuilt synchronized AF generator with variable amplitude. Demodulator consists an integrator and low pass filter. Built in supply , mains operated.

Pulse Position Modulation and Demodulation 2408
Kit consists: Trigger pulse generator and MMV with pulse shaper to generate PPM signals. Demodulator consists carrier synchronized flip-flop with integrator and low pass filter. Built in supply, mains operated.

Pulse Amplitude Modulation and Demodulation 2409
Kit consists: Sampling rate generator with four selected frequencies. Pulse width controller to vary the sampling pulse widths, two modulator (a) mosfet switch (b) sample and hold circuit. Demodulation circuit is based upon LPF. Inbuilt synchronized AF generator with variable amplitude. Built in supply, mains operated.

TDM Pulse Amplitude Modulation and Demodulation 2410
Kit consists: Crystal controlled sample rate generator with 1-4 line decoder. 3+1 channel analog mux for sampling to generate TDM PAM signal. Demodulator consists, threshold comparator with PLL sync generator, three channel analog switching demux, with LPF (3 No.) three synchronized AF frequencies with independent amplitude controls. Built in supply, mains operated.

Delta Modulation/Demodulation 2411
Kit consists: Two frequency sample rate generator, one high speed comparator, one linear integrator, flip-flop and buffer. Quantitizer demodulation circuit with integrator and LPF. Synchronized two spot frequency AF sine wave generator with variable amplitude controls. Built in supply, mains operated.

Adaptive Delta Modulation and Demodulation 2412
Kit consists: Three frequency sampling generator, high speed compactor, control flip-flop, linear integrator with different integrals selected by logic circuit monitor the pulse width, demodulator has same circuit with LPF Inbuilt synchronized 2 AF generators with variable amplitude controls. Built in supply, mains operated.

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