{"title":"RF \u0026 Software Defined Radio","description":"\u003cp\u003e\u003cstrong\u003eScan the entire RF spectrum. Build mesh networks. Intercept the invisible.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSoftware Defined Radio turns a $30 USB dongle into a receiver covering 1 MHz to 6 GHz — AM radio, aircraft transponders, weather satellites, trunked police comms, and signals you didn't know existed. Add Meshtastic and LoRa hardware and you can build off-grid communications networks with no internet, no towers, and no monthly fees. This is the technology used by radio astronomers, security researchers, ham radio operators, and serious RF engineers.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eEvery purchase directly funds independent physics research at the Golden Physics Project.\u003c\/em\u003e\u003c\/p\u003e","products":[{"product_id":"rtl-sdr-blog-v3-software-defined-radio-dipole-antenna-kit","title":"RTL-SDR Blog V3 Software Defined Radio + Dipole Antenna Kit","description":"\u003cp\u003e\u003cstrong\u003eA $35 USB dongle that turns your laptop into a radio telescope capable of receiving everything from aircraft transponders to meteor ionization trails at 100 MHz.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSoftware-Defined Radio (SDR) replaces analogue RF hardware — mixers, filters, demodulators — with digital signal processing algorithms running on a CPU or GPU. The RTL-SDR V3 uses a Rafael Micro R820T2 tuner chip covering 500 kHz–1.766 GHz with a 28.8 MHz sampling bandwidth, converting RF signals to in-phase\/quadrature (I\/Q) baseband pairs that software reconstructs into any modulation scheme: AM, FM, SSB, CW, ADS-B, NOAA weather satellite, ACARS, FlightAware feeds, P25 trunking, even passive radar. The included bias-tee (4.5 V, 180 mA) powers active antennas directly from the USB port.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFrequency range: 500 kHz–1766 MHz (with direct sampling for HF to 28 MHz)\u003c\/li\u003e\n\u003cli\u003e28.8 MHz instantaneous bandwidth; R820T2 + RTL2832U chipset\u003c\/li\u003e\n\u003cli\u003eIncludes: SMA dipole antenna set, MCX-to-SMA adapter, 3 m USB cable\u003c\/li\u003e\n\u003cli\u003eCompatible with SDR#, GNU Radio, GQRX, ADS-B feeder apps; Windows\/Mac\/Linux\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eEvery purchase directly funds independent physics research at the Golden Physics Project.\u003c\/em\u003e\u003c\/p\u003e","brand":"Golden Physics Project","offers":[{"title":"Default Title","offer_id":54144349962532,"sku":"GPP-ELEC-RTLSDR","price":79.99,"currency_code":"CAD","in_stock":true}]},{"product_id":"hackrf-one-sdr-transceiver-spectrum-analyzer-1-mhz-6-ghz","title":"HackRF One — SDR Transceiver \u0026 Spectrum Analyzer 1 MHz–6 GHz","description":"\u003cp\u003e\u003cstrong\u003eScan, transmit, replay, and analyze the entire RF spectrum from 1 MHz to 6 GHz.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHackRF One is an open-source software defined radio peripheral capable of both transmission and reception across 6 GHz of spectrum. Unlike receive-only RTL-SDR dongles, HackRF can transmit — making it capable of signal injection, RF testing, replay attacks on 433MHz key fobs, GPS simulation, and full-duplex transceiver applications. The same hardware platform used by security researchers, radio astronomers, and RF engineers worldwide. Runs on GNU Radio, SDR#, GQRX, and every major SDR software stack.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFrequency range: 1 MHz–6 GHz half-duplex TX\/RX\u003c\/li\u003e\n\u003cli\u003eSample rate: up to 20 Msps; 8-bit ADC\/DAC\u003c\/li\u003e\n\u003cli\u003eUSB 2.0 powered; open-source hardware and software\u003c\/li\u003e\n\u003cli\u003eCompatible with GNU Radio, SDR#, GRC, gr-osmosdr, HackRF tools\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eEvery purchase directly funds independent physics research at the Golden Physics Project.\u003c\/em\u003e\u003c\/p\u003e","brand":"Golden Physics Project","offers":[{"title":"Default Title","offer_id":54176198918436,"sku":"GPP-HACKRF-ONE","price":149.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2879\/9524\/files\/HackRF-One-fd0-0009.jpg?v=1780551853"},{"product_id":"heltec-wifi-lora-32-v3-esp32-s3-lora-915mhz-oled-meshtastic-ready","title":"Heltec WiFi LoRa 32 V3 — ESP32-S3 + LoRa 915MHz + OLED, Meshtastic Ready","description":"\u003cp\u003e\u003cstrong\u003eESP32-S3 + LoRa SX1262 + 0.96\" OLED on a single board. Flash Meshtastic in 60 seconds.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Heltec WiFi LoRa 32 V3 integrates an ESP32-S3 (dual-core 240MHz, Wi-Fi, BT 5.0), a Semtech SX1262 LoRa transceiver, a 0.96\" OLED display, and a LiPo battery connector on a compact board designed for Meshtastic mesh networking. Flash the firmware, set your region, and join or create a mesh network with no internet infrastructure. Range: 1–10 km line of sight, up to 20 km with a directional antenna. The most popular hardware platform for Meshtastic deployments.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eESP32-S3 dual-core 240MHz, Wi-Fi + BT 5.0; Semtech SX1262 LoRa 915MHz\u003c\/li\u003e\n\u003cli\u003e0.96\" 128×64 OLED display; LiPo charge circuit; USB-C\u003c\/li\u003e\n\u003cli\u003e–148 dBm receiver sensitivity; +22 dBm TX power\u003c\/li\u003e\n\u003cli\u003eArduino IDE + ESP-IDF + MicroPython; Meshtastic firmware pre-tested\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eEvery purchase directly funds independent physics research at the Golden Physics Project.\u003c\/em\u003e\u003c\/p\u003e","brand":"Golden Physics Project","offers":[{"title":"Default Title","offer_id":54176198951204,"sku":"GPP-HELTEC-LORA32-V3","price":64.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2879\/9524\/files\/2-500x500.png?v=1780551893"},{"product_id":"lilygo-t-beam-v1-2-esp32-lora-915mhz-gps-neo-6m-meshtastic-node","title":"LILYGO T-Beam V1.2 — ESP32 + LoRa 915MHz + GPS NEO-6M — Meshtastic Node","description":"\u003cp\u003e\u003cstrong\u003eGPS-enabled Meshtastic node out of the box. Build your off-grid mesh network with location awareness.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe LILYGO T-Beam combines an ESP32 (dual-core 240MHz), a Semtech SX1276 LoRa module, a u-blox NEO-6M GPS receiver, and an 18650 battery holder into a single board designed for mobile Meshtastic nodes. Every node broadcasts its GPS coordinates across the mesh, enabling real-time position sharing across a decentralized network with no internet or cell towers. The standard platform for backcountry communications, emergency preparedness, and off-grid deployments.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eESP32 dual-core 240MHz; SX1276 LoRa 915MHz; +20 dBm TX\u003c\/li\u003e\n\u003cli\u003eu-blox NEO-6M GPS — 3.5m accuracy, 1Hz update\u003c\/li\u003e\n\u003cli\u003e18650 holder + TP4056 charge controller + AXP192 power management; USB-C\u003c\/li\u003e\n\u003cli\u003eMeshtastic firmware pre-tested; RP-SMA LoRa antenna included\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eEvery purchase directly funds independent physics research at the Golden Physics Project.\u003c\/em\u003e\u003c\/p\u003e","brand":"Golden Physics Project","offers":[{"title":"Default Title","offer_id":54176199115044,"sku":"GPP-TBEAM-V12-915","price":99.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2879\/9524\/files\/Q408-LILYGO-T-Beam_6.jpg?v=1780942624"},{"product_id":"915mhz-lora-fiberglass-antenna-3-dbi-omnidirectional-rp-sma-male","title":"915MHz LoRa Fiberglass Antenna — 3 dBi Omnidirectional, RP-SMA Male","description":"\u003cp\u003e\u003cstrong\u003eReplace the rubber duck. Double your Meshtastic range with a properly tuned 3 dBi antenna.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe stock antennas shipped with most LoRa boards are electrically short rubber duck designs with near-zero or negative gain. A properly tuned fiberglass omnidirectional antenna provides 3 dBi over isotropic — roughly double the effective transmission power and noticeably extended range in Meshtastic, TTN, and LoRaWAN networks. This antenna is cut and tuned specifically for the 915 MHz North American ISM band used by Meshtastic, The Things Network, and most LoRa deployments in Canada and the USA.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFrequency: 915 MHz; gain: 3 dBi; VSWR: \u0026lt;1.5; impedance: 50Ω\u003c\/li\u003e\n\u003cli\u003eFiberglass radome over tuned aluminum radiator\u003c\/li\u003e\n\u003cli\u003eConnector: RP-SMA male — fits Heltec, LILYGO T-Beam, RAK WisNode, most LoRa modules\u003c\/li\u003e\n\u003cli\u003eLength: 195mm; IP67 weatherproof; suitable for outdoor permanent mount\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eEvery purchase directly funds independent physics research at the Golden Physics Project.\u003c\/em\u003e\u003c\/p\u003e","brand":"Golden Physics Project","offers":[{"title":"Default Title","offer_id":54176199147812,"sku":"GPP-LORA-ANT-915-3DBI","price":29.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2879\/9524\/files\/Sc4d426405c4e475dbe6593f1577805f8c.jpg_480x480q75.webp?v=1780993457"},{"product_id":"sdr-wideband-telescopic-antenna-kit-hf-vhf-uhf-dipole-sma-female","title":"SDR Wideband Telescopic Antenna Kit — HF\/VHF\/UHF Dipole, SMA Female","description":"\u003cp\u003e\u003cstrong\u003eThe antenna kit that separates SDR that receives signals from SDR that picks up noise.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA proper antenna is the difference between a functional SDR setup and a frustrating one. This wideband telescopic dipole kit covers HF through UHF with adjustable element length — collapse for FM\/VHF, extend for HF. Includes a tripod base, suction cup mount, magnetic base, coaxial cable, and SMA female connector for direct attachment to RTL-SDR, HackRF, Airspy, and virtually all SDR hardware. Two antennas in the kit enable diversity reception and basic MIMO experiments.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFrequency: 100 kHz–1.7 GHz (element length adjustable); 50Ω impedance\u003c\/li\u003e\n\u003cli\u003eTelescoping elements: 17–1000mm adjustable\u003c\/li\u003e\n\u003cli\u003eIncludes: 2× elements, tripod stand, suction mount, magnetic base, 3m coax, SMA female\u003c\/li\u003e\n\u003cli\u003eCompatible with RTL-SDR V3, HackRF One, Airspy, and all SMA-equipped SDR hardware\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eEvery purchase directly funds independent physics research at the Golden Physics Project.\u003c\/em\u003e\u003c\/p\u003e","brand":"Golden Physics Project","offers":[{"title":"Default Title","offer_id":54176199180580,"sku":"GPP-SDR-ANT-KIT-WIDE","price":49.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2879\/9524\/files\/dipole_kit_store.jpg?v=1780993456"},{"product_id":"sdrplay-rsp1b-wideband-software-defined-radio-receiver","title":"SDRplay RSP1B — Wideband Software Defined Radio Receiver","description":"\u003cp\u003eThe SDRplay RSP1B is a wideband software-defined radio receiver covering 1 kHz to 2 GHz. Reviewed and recommended by Tech Minds in February 2024, who noted that the improved noise performance under 1 MHz results in significantly better reception of NDB signals from airports — a real-world improvement over the RSP1A. Matt demonstrated the RSP1B with SDRplay's SDRconnect software, showing features including IQ recording, asymmetric notch filtering, and the remote server capability for network-based SDR use.\u003c\/p\u003e\u003cp\u003eThe RSP1B covers a wider frequency range than the RTL-SDR V3, includes a built-in bias-T for powering active antennas, and operates at up to 10 MHz of instantaneous bandwidth. 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The PortaPack H4M has become one of the most recommended HackRF PortaPack options — it surpasses the original PortaPack in quality and features at a lower price point.\u003c\/p\u003e\u003cp\u003eThe HackRF One covers 1 MHz to 6 GHz with both transmit and receive capabilities (half-duplex), making it useful for signal analysis, replay attacks, spectrum scanning, and learning RF fundamentals. The PortaPack H4M adds a touchscreen display and battery so you can run it completely standalone, without a PC. With Mayhem Firmware installed, you get access to a wide suite of RF tools including Meshtastic-compatible LoRa sniffing, POCSAG paging, NFC analysis, and much more.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFrequency: 1 MHz – 6 GHz\u003c\/li\u003e\n\u003cli\u003eHalf-duplex transceiver (transmit and receive)\u003c\/li\u003e\n\u003cli\u003ePortaPack H4M: touchscreen, SD card slot, battery operation\u003c\/li\u003e\n\u003cli\u003eCompatible with Mayhem Firmware for expanded capabilities\u003c\/li\u003e\n\u003cli\u003eOpen-source hardware by Great Scott Gadgets\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eAs featured in Tech Minds' beginner HackRF\/PortaPack tutorial series on YouTube.\u003c\/em\u003e\u003c\/p\u003e","brand":"Golden Physics Project","offers":[{"title":"Default Title","offer_id":54178534785316,"sku":"GPP-HACKRF-PORTAPACK-H4M","price":399.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2879\/9524\/files\/PortaPack-H2-and-HackRF-assembled.jpg?v=1780563281"},{"product_id":"ttgo-lora32-915mhz-esp32-lora-wifi-bluetooth-oled-dev-board","title":"TTGO LoRa32 915MHz ESP32 — LoRa + WiFi + Bluetooth + OLED Dev Board","description":"\u003cp\u003eThe TTGO LoRa32 (aka LilyGO LoRa32) is an ESP32-based development board combining LoRa 915 MHz, WiFi, Bluetooth, and a 0.96-inch OLED display. Andreas Spiess (“The Guy with the Swiss Accent”) lists this board on his curated Amazon recommendations list and has covered TTGO LoRa boards in detail in his ESP32 comparison and LoRa tutorial video series (videos #224 and #337 on his channel).\u003c\/p\u003e\u003cp\u003eThis board is a common starting point for Meshtastic nodes, LoRaWAN sensor deployments, and ESP32 IoT projects. Andreas is known for testing exact boards rather than generic recommendations — the TTGO LoRa32 passes his criteria for usable, affordable LoRa+ESP32 hardware.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMCU: ESP32 dual-core 240 MHz\u003c\/li\u003e\n\u003cli\u003eLoRa: SX1276 chip, 915 MHz (North America\/Australia)\u003c\/li\u003e\n\u003cli\u003eDisplay: 0.96\" OLED (128x64)\u003c\/li\u003e\n\u003cli\u003eConnectivity: WiFi 802.11 b\/g\/n + Bluetooth 4.2\u003c\/li\u003e\n\u003cli\u003eMeshtastic compatible\u003c\/li\u003e\n\u003cli\u003eUSB-C programming\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eListed on Andreas Spiess’s Amazon shop (amazon.com\/shop\/andreasspiess) and covered in his LoRa and ESP32 tutorial video series.\u003c\/em\u003e\u003c\/p\u003e","brand":"Golden Physics Project","offers":[{"title":"Default Title","offer_id":54178576564516,"sku":"GPP-TTGO-LORA32-915","price":59.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2879\/9524\/files\/P-DISPLAY.jpg?v=1780563281"},{"product_id":"lilygo-t-beam-supreme-esp32-s3-lora-915mhz-gps-meshtastic","title":"LILYGO T-Beam Supreme — ESP32-S3 + LoRa 915MHz + GPS + Meshtastic","description":"\u003cp\u003eThe LILYGO T-Beam Supreme is the upgraded flagship of the T-Beam Meshtastic node lineup, built around the ESP32-S3 and featuring the SX1262 LoRa chip (improved sensitivity over the older SX1276). Tech Minds (YouTube: @TechMinds2016) tested LILYGO LoRa devices for Meshtastic compatibility and showed how to flash firmware using the online Meshtastic flasher tool. The T-Beam Supreme is the community-recommended upgrade for anyone who wants the full feature set: GPS, battery charging, LoRa, and a display, all integrated on one board.\u003c\/p\u003e\u003cp\u003eThe T-Beam line is the most-recommended Meshtastic hardware for newcomers: it includes GPS for location sharing on the mesh, an 18650 battery holder with charge management, and can run standalone for days. The Supreme version adds the more sensitive SX1262 radio chip and ESP32-S3 for improved performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMCU: ESP32-S3\u003c\/li\u003e\n\u003cli\u003eLoRa: SX1262, 915 MHz\u003c\/li\u003e\n\u003cli\u003eGPS: u-blox GPS module\u003c\/li\u003e\n\u003cli\u003eBattery: 18650 holder + charge management\u003c\/li\u003e\n\u003cli\u003eMeshtastic firmware compatible (flash via browser)\u003c\/li\u003e\n\u003cli\u003eOptional: OLED display header\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eAs tested by Tech Minds in his Meshtastic-compatible LILYGO LoRa devices video; the T-Beam line is his go-to for Meshtastic hardware demonstrations.\u003c\/em\u003e\u003c\/p\u003e","brand":"Golden Physics Project","offers":[{"title":"Default Title","offer_id":54178584756516,"sku":"GPP-TBEAM-SUPREME-915","price":79.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2879\/9524\/files\/LILYGO-T-BEAM_10_3bb84be5-da09-4626-8b93-99be997d49b8.jpg?v=1780551888"},{"product_id":"rtl-sdr-blog-v4-usb-software-defined-radio-dongle","title":"RTL-SDR Blog V4 — USB Software Defined Radio Dongle","description":"\u003cp\u003eThe RTL-SDR Blog V4 is the definitive entry-level software defined radio receiver. 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Where generic RTL dongles drift and overload, the SMArt v5 holds frequency and handles strong signal environments with genuine RF shielding in its aircraft-grade aluminium enclosure.\u003c\/p\u003e\u003cp\u003eThe SMA antenna connector is direct-soldered to a reinforced PCB landing for durability — no wobbly MCX adapters. 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