RTL-SDR GNU Radio Spectrum Analyser Kit - Real-Time RF for Raspberry Pi 4
RTL-SDR GNU Radio Spectrum Analyser Kit - Real-Time RF for Raspberry Pi 4
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Turn a Raspberry Pi 4 and an RTL-SDR dongle into a professional-grade spectrum analyser covering 24 MHz to 1.7 GHz. This kit equips engineering students, researchers, and RF enthusiasts with a hands-on tool for real-time wireless signal visualisation, interference hunting, and communication system analysis - essential for advanced lab coursework, capstone projects, and hackathon prototyping.
What You'll Build
A GNU Radio-powered software-defined radio that plots live frequency spectra, demodulates common signals, and logs data for lab reports. The analyser's Python integration lets you automate measurements, perfect for RF testing, antenna characterisation, and wireless protocol debugging. The finished build runs entirely on the Pi 4 with a responsive touchscreen interface.
What You'll Learn
- Configure GNU Radio flowgraphs for real-time FFT processing and waterfall displays
- Calibrate an RTL-SDR receiver and optimise gain settings for wideband scanning
- Write Python scripts to control SDR and plot time-varying spectrum data
- Analyse ISM band signals, FM broadcast, and cellular downlink activity as lab exercises
Kit Contents
| Component | Quantity |
|---|---|
| Raspberry Pi 4 Model B 4GB | 1 |
| RTL-SDR Dongle | 1 |
| Wideband Antenna | 1 |
| MicroSD Card 32GB | 1 |
| USB-C PSU | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
B.Tech ECE and EEE students in their third or fourth year will use this kit to master wireless communications and digital signal processing labs. Smart India Hackathon teams building RF-based solutions rely on the real-time analyser to validate designs under pressure. Research assistants at IITs, NITs, and VIT find it a practical alternative when a full-fledged lab instrument is unavailable, and ATL college extension clubs adopt it for advanced workshops.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project - accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
What if I get stuck during the build?
Your kit includes a QR code that opens an AI build companion trained on this exact project, plus WhatsApp support from our Bengaluru team. Most issues are resolved in minutes.
Does this kit require any additional software or licences?
No. The SD card comes pre-installed with Raspberry Pi OS, GNU Radio, and all dependencies. Every tool is open-source and free, ready to run the moment you boot.
What frequency range does the spectrum analyser cover?
With the included wideband antenna, you can scan continuously from 24 MHz to 1.7 GHz, covering FM broadcast, aircraft band, ISM 2.4 GHz, and many cellular downlinks. The RTL-SDR's sensitivity is maximised across this range.
Can I use this kit for my college lab submissions or hackathon projects?
Absolutely. The kit generates publishable waterfall plots, FFT spectra, and data logs, making it ideal for lab reports and demo tables. It has been used by students from IIT Bombay, NIT Trichy, and VIT Vellore for exactly such submissions.
RTL-SDR and GNU Radio on Pi 4 build a real-time spectrum analyser from 24MHz to 1.7GHz.
What's in this kit
- Raspberry Pi 4 Model B 4GB
- RTL-SDR Dongle
- Wideband Antenna
- MicroSD Card 32GB
- USB-C PSU
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items