Frequency Modulation and Demodulation Trainer Manufacturer,Supplier and Exporter in India
Product Code : EL-CT-1496
Jlab Export is a leading Frequency Modulation and Demodulation Trainer Manufacturer,and suppliers in India
Frequency Modulation and Demodulation Trainer (code EL-CT-1496) is an FM transmitter and receiver trainer for analog communication practicals. It generates FM with a varactor modulator and a reactance modulator and recovers it with five different detectors, all built into a single printed circuit board. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Experiments | Frequency modulation by varactor and reactance modulation; frequency demodulation by detuned resonant, ratio, quadrature, Foster-Seeley and phase locked loop detectors; FM waveform on a separate VCO circuit; effect of noise on the detection of an FM signal |
| Construction | Single printed circuit board, 300 x 400 mm; self-contained trainer |
| Built-in power supply | ±12 V DC, IC regulated |
| FM modulating signal generator | Sine wave, 300 Hz to 3.4 kHz, amplitude 0 to 5 Vpp |
| Modulators | Varactor modulator and reactance modulator, each with carrier frequency adjustment |
| Demodulators | Detuned resonant detector, quadrature detector, Foster-Seeley detector, ratio detector, phase locked loop detector |
| Mixer/amplifier | One, with gain adjustment; allows the FM signal to be amplitude modulated by a noise input before demodulation |
| Amplitude limiter | On board, with amplitude control |
| Low pass filter | 3.4 kHz cut-off frequency |
| Amplifier | With adjustable gain |
| VCO circuit | For demonstrating the FM waveform |
| Test points | 78; input, output and test points provided on the board |
| Switched faults | 8, on board |
| Connections | Terminals and sockets at appropriate places on the panel for connections and observation of waveforms |
| Mains supply | 230 V AC, 50 Hz |
| Dimensions | W 412 x H 150 x D 310 mm |
| Weight | Approx. 6 kg |
| Documentation | Detailed operating instructions covering object, theory, design procedures, report suggestions and book references |
| Other apparatus required | Cathode ray oscilloscope, 20 MHz; patch cords (separate items) |
| Quality check | Each trainer is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-CT-1496 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the FM Modulation and Demodulation Trainer Used For?
In frequency modulation the carrier’s frequency, rather than its amplitude, follows the audio signal, so amplitude disturbances picked up along the way can be clipped off by a limiter before detection. A varactor modulator varies the tuned frequency of the oscillator through a diode whose capacitance changes with the applied voltage, while a reactance modulator uses an active circuit that behaves as a voltage-controlled reactance across the tuned circuit. At the receiving end the detuned resonant, Foster-Seeley, ratio, quadrature and phase locked loop detectors each turn frequency changes back into a voltage in a different way, and having all five on one board lets students compare them on the same signal.
Electronics and communication engineering students use it for the FM experiments of the analog communication lab, following operating instructions that give the object, theory, design procedure, report suggestions and book references.
What to Specify When Ordering
- Number of trainers — how many benches in your communication lab need one.
- Bench space — each trainer measures W 412 x H 150 x D 310 mm and weighs about 6 kg.
- Companion trainers — the AM, AM receiver and pulse code modulation trainers linked below are separate items that can share the enquiry.
Frequently Asked Questions
How can the effect of noise on FM be studied?
The mixer/amplifier, which has a gain adjustment, lets the FM signal be amplitude modulated by a noise input before demodulation, so the effect of noise on detection can be investigated. The on-board amplitude limiter, with amplitude control, shows how limiting reduces those amplitude variations before the detector.
What is the separate VCO circuit for?
It demonstrates the FM waveform. A voltage-controlled oscillator’s output frequency follows its control voltage, so driving it with the modulating signal produces a frequency-modulated wave that can be viewed directly on the oscilloscope.
What do the switched faults and test points offer?
There are 8 switched faults on the board and 78 test points. An instructor can switch in a fault for students to trace through the test points.
Which other apparatus does the trainer need?
A 20 MHz cathode ray oscilloscope and patch cords, which are separate items. JLab’s Dual Trace Oscilloscope, linked below, can be quoted on the same enquiry.
How does it differ from the DSB and SSB-SC Amplitude Modulation and Demodulation Trainer?
Both are built on a single 300 x 400 mm PCB with a 300 Hz to 3.4 kHz, 0 to 5 Vpp sine wave modulating generator. This trainer covers frequency modulation with varactor and reactance modulators and five FM detectors; the AM trainer covers conventional AM, DSB-SC and SSB-SC with a diode detector and a product detector.
What should an export enquiry include?
The number of trainers, the destination country and port or city, the delivery terms you want (for example FOB or CIF), any packing or labelling instructions, and the tender reference where there is one.
Who manufactures this trainer?
JLab, the trading name of Jain Laboratory Instruments Pvt Ltd, makes it at its works in Ambala, Haryana, India, and quotes for it as the manufacturer.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, an Indian manufacturer of communication trainers, electronics trainers and laboratory equipment, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. The FM trainer is produced at JLab’s own works and not bought in from a trader, so colleges, dealers and importers deal with the maker directly, and repeat orders and spares are handled by the same works. The company is registered under GSTIN 06AADCJ9848D1ZE and holds Legal Entity Identifier 549300DTGS77DGYD6N03. JLab exports worldwide and ships to buyers in every region — for example Switzerland in Western Europe, Cyprus in Southern Europe, Mozambique in East Africa, Indonesia in Southeast Asia and the USA in North America. Tender information is on the JLab lab tenders page.
Related Communication Trainers
- DSB and SSB-SC Amplitude Modulation and Demodulation Trainer — generates and demodulates conventional AM, DSB-SC and SSB-SC signals on one board.
- DSB and SSB AM Receiver Trainer — an AM receiver trainer with RF amplifier, mixer, local oscillator, AGC, and diode and product detectors.
- Pulse Code Modulation and Demodulation Trainer — PCM encoder and decoder with a built-in TTL clock generator.
- Dual Trace Oscilloscope — a 20 MHz dual-channel cathode ray tube oscilloscope.
Browse the Communication Trainer range or all Electronics Lab Equipments.
Request a Quote
Use the Add To Cart enquiry button above, or contact JLab through the contact page with the number of FM trainers, the delivery destination and any related trainers you want on the same quotation.
Last updated: 22 October 2026
