Analog Communication Training System Manufacturer,Supplier and Exporter in India

Product Code : SCL-CE-12506

Indian Lab Suppliers supplies the Analog Communication Training System (Product ID: 12506), part of the Communication Equipment range under Laboratory equipment, a comprehensive block-diagram-level trainer covering the complete analog communication curriculum — AM, DSB-SC, SSB, FM, PM and FDM — on a single self-contained transmitter-and-receiver system.

Quick Answer

This system lets students build analog communication experiments at the block-diagram level using patch cords, with all modulating signals and carriers generated on board. It covers a full AM/DSB/SSB transmitter and matched super-heterodyne receiver, an FM/PM (Armstrong and reactance) modulator with matching angle-demodulation block, a 2-channel FDM transmitter and receiver, noise and filter study blocks, and antenna transmission/reception, with waveforms viewed on a standard digital storage oscilloscope.

Transmitter Section

Generator block: two function generators (sine, square and triangular waveforms, 1 Hz–100 kHz variable frequency) and two voltage-controlled oscillators (400–1500 kHz variable, 0–2V amplitude).

Modulator block: two balance modulators for amplitude modulation, DSB and SSB (USB/LSB) — one operating on a 1–1000 kHz carrier with 0.1–100 kHz modulating input, the other on a 1 MHz carrier with 400–500 kHz modulating input, both with adjustable carrier null and output amplitude; a Colpitts oscillator; an Armstrong modulator (450 kHz carrier generator with 90° phase shifter) and phase modulator (400–500 kHz adjustable) for angle modulation, plus a reactance modulator with variable amplitude; and pre-emphasis with a 50µs time constant.

FDM transmitter: two band-pass input filters (7–11 kHz, fc≈9 kHz and 18–22 kHz, fc≈20 kHz) with a 256 kHz pilot carrier, plus a ceramic filter (460 kHz centre frequency, 10 kHz ±3 kHz bandwidth) and a band-pass filter (1.455 MHz centre frequency, 10 kHz ±3 kHz bandwidth).

Noise generator and filter block: a noise generator and adder (0–4V white noise, adjustable up to the maximum signal + noise value); a sweep generator (10 Hz sweep frequency, adjustable sweep depth, oscilloscope X-axis output); an RF/spectrum detector (100 mVpp minimum input, adjustable); band-pass (7–13 kHz), high-pass (3.4 kHz cut-off), band-reject (7–13 kHz) and matched T and π-section filters (20 kHz cut-off each).

Transmission via antenna and application block: a ferrite rod and MW coil antenna; an output amplifier (600–1650 kHz, adjustable gain); and an audio preamplifier with microphone input and adjustable gain.

Receiver Section

RF amplifier, local oscillator and mixer blocks: an RF amplifier (600–1650 kHz, adjustable gain); a local oscillator (sine wave, 900 kHz–2.1 MHz variable, 0–2 Vpp amplitude, 50Ω output impedance); and a dual-gate MOSFET mixer (local oscillator and RF signal inputs, 455 kHz adjustable output, dual-tuned LC filter).

IF amplifier and filter block: 1st and 2nd IF amplifiers (455 kHz centre frequency, variable R-L-C load impedance, 32 dB gain with automatic gain control) with two 3.4 kHz cut-off filters.

Demodulator block: a beat frequency oscillator (457 kHz adjustable, 0–2V variable amplitude); a diode envelope detector (positive and negative envelope detection with variable RC filter, for DSB); a limiter (455 kHz centre frequency, 1.5V output amplitude); a quadrature/product detector, a Foster-Seeley/ratio detector, a PLL detector and a detuned resonance detector (each adjustable 400–500 kHz, 1 Vpp input, for SSB); and de-emphasis with a 50µs time constant.

FDM receiver: matching band-pass filters (7–11 kHz, fc≈9 kHz and 18–22 kHz, fc≈20 kHz) and a power meter with integrator-and-dump circuit, a 2-digit seven-segment display with a 1–15 second timer, and 0–2V input signal amplitude.

Reception via antenna and application block: a ferrite rod and MW coil antenna; an audio amplifier with headphone output and adjustable gain; switch faults to simulate fault conditions in various parts of the circuit; and a GND, +5V, +12V, −12V power supply.

Optional Curriculum Modules

Module 1 – Linear modulation: amplitude modulation, frequency spectrum of AM, power in an AM wave, generation of an AM signal, modulation index of AM, observing the linearity curve of an AM modulator, SSB-SC, DSB-SC, AM demodulation (envelope and square-law methods), and the phase discriminator method.

Module 2 – Frequency division multiplexing (FDM).

Module 3 – Angle modulation: principles of frequency and phase modulation and the relation between FM and PM waves, frequency deviation and modulation index of FM, bandwidth and spectrum of FM, and Armstrong modulation.

Module 4 – Demodulation of angle-modulated signals: FM slope detectors, ratio detectors, the phase-locked loop, and pre-emphasis and de-emphasis.

Module 5 – Receivers and noise in analog communication: the super-heterodyne receiver (AM and FM), observing the frequency response of the ceramic filter, studying the selectivity and sensitivity of an AM receiver, the effect of noise on analog systems, noise power spectral density measurement, and SNR and noise figure measurement.

Module 6 – Filters: band-pass, band-reject, high-pass, low-pass, matched T-section and matched π-section filter studies.

Module 7 – Applications: transmitting an AM signal via the antenna, studying the amplifier circuit, studying voice communication, and studying switch faults.

Where This Is Used

This Analog Communication Training System is used in electronics and communication engineering education to teach the complete analog communication curriculum on one integrated transmitter-and-receiver platform, complementing our broader Electronics Lab Equipment and Engineering Lab Equipment ranges.

Why Buy from Indian Lab Suppliers

Indian Lab Suppliers is an India-based laboratory equipment manufacturer and exporter supplying this Analog Communication Training System alongside its broader Communication Equipment catalog, with documentation such as a Certificate of Origin available on request for institutional and export orders.

Frequently Asked Questions

Does this system cover both transmitter and receiver sides?
Yes, it is a complete, self-contained transmitter-and-receiver system covering AM, DSB, SSB, FM, PM and FDM, with matching modulator and demodulator blocks on each side.

Is an oscilloscope required to use this system?
Yes, waveforms are viewed on a standard digital storage oscilloscope, which is not included but is generally already available in a communication engineering laboratory.

Do you supply this equipment for institutional or export orders outside India?
Yes. Indian Lab Suppliers quotes equipment for institutional and tender buyers across export markets — see the Tenders page for documentation requirements.

Related Categories

Laboratory · Electronics Lab Equipment · Engineering Lab Equipment

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For pricing, bulk quantities or tender documentation on the Analog Communication Training System, reach our team via Contact Us or submit your requirement through our Tenders page.