{"product_id":"rtl-sdr-spectrum-analyser-kit-for-raspberry-pi-4-build-a-real-time-displ","title":"RTL-SDR Spectrum Analyser Kit for Raspberry Pi 4 - Build a Real-Time Display","description":"\u003ch1\u003eBuild a Real-Time SDR Spectrum Analyser with Raspberry Pi 4 and RTL-SDR\u003c\/h1\u003e\n\n\u003cp class=\"value-summary\"\u003eEvery part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.\u003c\/p\u003e\n\n\u003cdiv class=\"specs-strip\"\u003e\n  \u003cspan\u003e\u003cstrong\u003eDifficulty:\u003c\/strong\u003e Advanced\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eBuild Time:\u003c\/strong\u003e 6-8 hrs\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eAge:\u003c\/strong\u003e 18-25\u003c\/span\u003e\n  \u003cspan\u003e\u003cstrong\u003eSkill:\u003c\/strong\u003e RF spectrum analysis with GNU Radio\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eTransform a Raspberry Pi 4 into a full-fledged RF spectrum analyser covering 24 MHz to 1.7 GHz. Watch live FFT and waterfall displays as you decode FM signals, track Wi-Fi activity, or investigate unknown transmissions - all with real-time plotting via GNU Radio. It's the perfect bridge between theoretical DSP coursework and practical wireless research.\u003c\/p\u003e\n\n\u003ch2\u003eWhat You'll Build\u003c\/h2\u003e\n\u003cp\u003eYou'll assemble a portable, software-defined spectrum analyser that scans from HF to UHF bands. Connect the wideband antenna, boot the pre-configured OS on the MicroSD card, and immediately see the electromagnetic spectrum in vivid colour. Once running, you can save I\/Q recordings, export measurement data, or script custom signal-processing blocks for your research or college project.\u003c\/p\u003e\n\n\u003ch2\u003eWhat You'll Learn\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eInstall and configure GNU Radio on Raspberry Pi OS\u003c\/li\u003e\n  \u003cli\u003eCapture and stream raw I\/Q samples from an RTL-SDR dongle\u003c\/li\u003e\n  \u003cli\u003eDesign custom FFT and waterfall sinks using GNU Radio Companion\u003c\/li\u003e\n  \u003cli\u003eAnalyse wireless protocols like FM, DVB-T, GSM, and LoRa in real time\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKit Contents\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eComponent\u003c\/th\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRaspberry Pi 4 Model B 4GB\u003c\/td\u003e\n\u003ctd\u003ex1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRTL-SDR Dongle\u003c\/td\u003e\n\u003ctd\u003ex1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWideband Antenna\u003c\/td\u003e\n\u003ctd\u003ex1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMicroSD Card 32GB\u003c\/td\u003e\n\u003ctd\u003ex1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eUSB-C PSU\u003c\/td\u003e\n\u003ctd\u003ex1\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhy Buy This Kit Instead of Sourcing Parts Separately\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFactor\u003c\/th\u003e\n\u003cth\u003eSourcing Separately\u003c\/th\u003e\n\u003cth\u003eCompoden Kit\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCompatibility checks\u003c\/td\u003e\n\u003ctd\u003eYou verify every part\u003c\/td\u003e\n\u003ctd\u003ePre-tested as a system\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBuild support\u003c\/td\u003e\n\u003ctd\u003eForums and scattered tutorials\u003c\/td\u003e\n\u003ctd\u003eAI companion trained on this exact project\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTime to first working build\u003c\/td\u003e\n\u003ctd\u003eDays of debugging\u003c\/td\u003e\n\u003ctd\u003eHours, with step-by-step guidance\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eShipping coordination\u003c\/td\u003e\n\u003ctd\u003eMultiple sellers, multiple delays\u003c\/td\u003e\n\u003ctd\u003eOne shipment from Bengaluru in 3-5 days\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWho This Kit Is For\u003c\/h2\u003e\n\u003cp\u003eThis advanced kit is designed for B.Tech ECE\/EEE students working on final-year communication projects, Smart India Hackathon teams prototyping RF solutions, and research scholars at IIT\/NIT\/VIT\/BITS exploring software-defined radio. It also suits ATL lab mentors guiding advanced tinkering and electronics hobbyists ready to move beyond microcontroller projects.\u003c\/p\u003e\n\n\u003ch2\u003eBuilt and Backed by Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery 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.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eWhat if I get stuck during the build?\u003c\/summary\u003e\u003cp\u003eThe AI companion covers every step, from flashing the SD card to tuning the FFT waterfall. If you need a human, our WhatsApp support team is available during IST working hours.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I use this kit to analyse GSM or 4G signals?\u003c\/summary\u003e\u003cp\u003eYes, within the 24 MHz-1.7 GHz range you can capture GSM, FM, DVB-T, and some LTE bands. Full protocol decoding may require extra software libraries, but the kit gives you the raw I\/Q data and real-time visualisation needed for research.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need a monitor or can I use it headless?\u003c\/summary\u003e\u003cp\u003eYou can operate headlessly via VNC or SSH from a laptop, or connect an HDMI display for direct interaction. The pre-configured OS runs GNU Radio with a full graphical interface either way.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs the RTL-SDR dongle sensitive enough for weak signals?\u003c\/summary\u003e\u003cp\u003eThe included dongle uses an RTL2832U chipset with up to 2.4 MSPS sample rate and sensitivity around -60 dBm, sufficient for strong local signals and lab demonstrations. Adding an external LNA can extend it for faint signal work.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003cdiv class=\"kit-description\"\u003e\n  \u003cp\u003eRTL-SDR + GNU Radio on Pi 4 builds a real-time spectrum analyser from 24MHz to 1.7GHz - waterfall and FFT display.\u003c\/p\u003e\n  \u003ch4\u003eWhat's in this kit\u003c\/h4\u003e\n  \u003cul\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/industrial-ph-sensor-module-for-arduino-esp32-raspberry-pi\"\u003eRaspberry Pi 4 Model B 4GB\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003eRTL-SDR Dongle\u003c\/li\u003e\n    \u003cli\u003eWideband Antenna\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/microsd-card-reader-spi-module-for-arduino\"\u003eMicroSD Card 32GB\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/products\/raspberry-pi-4-official-power-supply-5v-3a-usb-c-compoden\"\u003eUSB-C PSU\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is included in the Research Lab Kit 11 SDR Spectrum Analyser?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The Research Lab Kit 11 SDR Spectrum Analyser includes all components needed: Raspberry Pi 4 Model B 4GB, RTL-SDR Dongle, Wideband Antenna, MicroSD Card 32GB, USB-C PSU and more. Everything is pre-tested for compatibility and shipped from Bengaluru, India.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What skill level is required for the Research Lab Kit 11 SDR Spectrum Analyser?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"This kit is designed for Advanced level makers, suitable for ages 18-25. RTL-SDR + GNU Radio on Pi 4 builds a real-time spectrum analyser from 24MHz to 1.7GHz - waterfall and FFT display. Estimated build time is 6-8 hrs.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I buy the Research Lab Kit 11 SDR Spectrum Analyser online in India?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, the Research Lab Kit 11 SDR Spectrum Analyser is available online at Compoden (compoden.in), India's AI-powered electronics and robotics store. 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