2026-07-07 Electronics 2000 - Hobby Electronics - Software, Calculators, Technical Data, Pin-outs, Beginners Guide, Forum, Links... Electronics 2000, created by Simon Carter, is a comprehensive hobby electronics reference packed with online calculators for resistors, capacitors, inductors, Ohm's Law, and more, plus technical data articles, pin-outs, and a beginner's guide. The site also offers downloadable Windows software like Electronics Assistant and an EPE Index, making it a genuinely useful toolkit for hobbyists, students, and engineers alike.
2026-07-07 ELECTRONICS HOBBYIST Bill Beaty's Electronics Hobbyist page is a sprawling directory of resources for electronics enthusiasts, covering surplus suppliers, schematics archives, robotics, embedded processors, Tesla coils, and electrostatics projects. It also includes Bill's own articles on electricity fundamentals, common misconceptions, and hands-on science experiments, making it a rich hub for both beginners and seasoned hobbyists.
2026-07-07 Electronics Notes – reference site for electronics, radio & wireless Electronics Notes, created and maintained by engineer Ian Poole, is a comprehensive reference hub covering electronics theory, circuit design, components, radio technology, antennas, ham radio, and more. With tutorials aimed at everyone from hobbyists to professionals, it also offers downloadable guides, infographics, and component data sheets, making it a genuinely useful destination for anyone working with electronics.
2026-07-07 Electronics Tutorials Electronics Williamson Labs is a comprehensive electronics tutorial site covering foundational topics like transistors, op-amps, 555 timers, and circuit design for learners at various levels. It serves as a structured educational reference for anyone looking to understand basic and intermediate electronics concepts through instructional content.
2026-07-07 ELM by ChaN ChaN's personal electronics engineering site showcases hobby projects, technical notes, and software tools shared with enthusiasts worldwide, including the widely-used FatFs filesystem module for embedded systems. The site blends circuit designs, fluorescent lamp ballasts, and downloadable code under a Creative Commons license, making it a genuine resource for hardware hobbyists.
2026-07-07 ePanorama.net | Audio | Video | Circuits | Electronics Design Tomi Engdahl's ePanorama.net is a vast electronics reference site covering audio circuits, video systems, PCB design, embedded systems, RF, and much more, with hundreds of categorized links and original schematics. The accompanying blog keeps the resource current with news, product tests, IoT coverage, and cleantech topics, making it a go-to hub for electronics hobbyists and engineers alike.
2026-07-07 FC's Electronic Circuits FC's Electronic Circuits is a sprawling hobbyist archive packed with schematics and project descriptions covering everything from solar charge controllers and LED circuits to tube amplifiers, Geiger counters, and amateur radio gear. With dozens of original circuit designs, Arduino projects, and links to related ham radio and electronics builders, this site is a goldmine for DIY electronics enthusiasts.
2026-07-07 GADGETEER A site for electronic homebrewers: Bill Meara's Gadgeteer site is a celebration of electronic homebrewing, centered on ham radio projects including DSB and SSB rigs, tube receivers, and QRP builds alongside a popular podcast called SolderSmoke. The site also ventures into amateur astronomy, model rocketry, and kite aerial photography, making it a rich destination for technically adventurous hobbyists.
2026-07-07 Giovannini Elettromeccanica - Military and Commercial antenna systems for HF Giovannini Elettromeccanica is an Italian antenna manufacturing company specializing in HF antenna systems for both military and commercial applications, covering the RF spectrum from 1.5 to 30 MHz. Their product catalog includes log-periodic antennas, broadband wire dipoles, fiberglass masts, antenna rotators, and towers, with research, design, manufacturing, and support services all offered in-house.
2026-07-07 Home | Phi's steradian Phi's personal digital garden covers a range of technical and creative interests including electronics, music, DIY, mathematics, physics, and railways. A cozy old-web style homepage with an 88x31 button for linking, inviting visitors to explore whatever useful or interesting content Phi has cultivated here.
2026-07-07 Jedaler's Electronics Page Jedaler's Electronics Page, built by JaKab-Daniel, is a curated link collection focused on circuit schematics, microcontrollers, RF antennas, robotics, and hobby electronics projects. Visitors will find references to PIC microcontroller resources, Tesla-related circuits, xenon flash designs, and free energy machine plans alongside general electronics archives.
2026-07-07 KA7OEI's blog Modifying the MFJ-5008 parabolic ultrasonic receiver for better sensitivity and wider frequency response: KA7OEI is Clint's technically-focused amateur radio and electronics blog, covering hands-on modifications and experiments with devices like the MFJ-5008 parabolic ultrasonic receiver. This particular post dives deep into improving the sensitivity and frequency response of the discontinued ultrasonic tool, with detailed photos, circuit analysis, and practical applications like bat detection and power line fault finding.
2026-07-07 Marine Radio, Telescopes, Binoculars, Scanners, Test equipment and CB Radio in Australia Andrews Communications is an Australian retailer specializing in marine radio, telescopes, binoculars, scanners, CB radio, and test equipment. The shop serves customers across Australia with a broad range of optical and electronic communication products.
2026-07-07 Mostly DIY RF Mostly DIY RF is a specialized resource for amateur radio builders, offering PCB kits and detailed documentation for RF circuits including IF amplifiers, low-pass filters, VFOs, crystal filters, and MMIC amplifiers. The site covers designs by well-known ham radio engineers like Hayward and Kopski, making high-performance transceiver building accessible to hobbyists.
2026-07-07 Music Electronics µArchive The Music Electronics µArchive is a long-running reference hub for DIY guitar effects and audio electronics, offering schematics archives, FAQs, and curated links to the best resources on the web. Highlights include a downloadable schematics archive, guides on tube amplifiers and transistor identification, and an Electro-Harmonix parts sheet for builders working with vintage pedal components.
2026-07-07 Neets Module 10-Introduction to Wave Propagation, Transmission Lines, and Antennas A comprehensive online reference covering the U.S. Navy's NEETS Module 10, this resource walks through wave propagation, transmission lines, and antenna theory with detailed chapters on electromagnetic fields, radio wave propagation, and sound waves. Published by Integrated Publishing, it offers the full technical training manual with options to download as PDF or order in print, making it a valuable reference for electronics students and hobbyists alike.
2026-07-07 Page 1 - Useful Resources Site Links - Electronics Tutorials & Circuits - Discover Engineering Hobby Projects HobbyProjects.com curates an extensive collection of links to electronics tutorials, circuits, engineering projects, and useful resources for hobbyists at all skill levels. The site also offers its own tutorials covering topics from basic electronics to microcontrollers, along with dictionaries, formulas, and reference materials for electronics enthusiasts.
2026-07-07 Peter's DIY electronic projects and links Peter's DIY electronics hub showcases a range of original hardware projects including relay modules for Raspberry Pi and Arduino, PIC microcontroller circuits, remote control encoders, and an LCD thermometer. Each project comes with schematics and build guides, making this a great resource for hobbyist engineers looking for practical, hands-on circuit designs.
2026-07-07 RED Free Circuit Designs - Audio RED Free Circuit Designs is a hobbyist electronics resource offering dozens of free audio amplifier schematics, preamplifier modules, headphone amplifiers, and miscellaneous electronic circuit designs. Visitors can browse Class-A and Class-B amplifier projects, phono preamps, intercom circuits, and many more practical designs, all available at no cost.
2026-07-07 RF Cafe Homepage RF Cafe is a comprehensive resource for RF and electronics engineers, offering formulas, reference data, vintage magazine archives, software tools, forums, and a massive parts and services directory. Running since 1996, the site blends technical depth with nostalgia, featuring scanned articles from classic publications like QST, Popular Electronics, and Radio-Craft alongside modern engineering utilities.
2026-07-07 RF schematics Peter's RF schematics page is a technical reference collection of radio frequency circuit diagrams spanning receivers, transmitters, and transceivers across a wide range of frequencies from 27MHz to 1GHz. Hobbyists and engineers will find schematics for superregenerative receivers, FM audio transmitters, walkie-talkies, SAW-based designs, and datasheets for chips from major manufacturers like Silicon Labs, HopeRF, and Texas Instruments.
2026-07-07 Robert Smathers TVRO Satellite Web Page Robert Smathers maintains this personal hub dedicated to TVRO (Television Receive Only) satellite reception, featuring links, schedules, mail lists, newsgroups, and dealer resources for satellite hobbyists. The site also touches on visual satellite observing and space topics, making it a useful reference point for backyard dish enthusiasts.
2026-07-07 SchematicsForFree SchematicsForFree is a volunteer-run archive offering free electronics schematics, circuit diagrams, and service manuals covering audio, video, automotive, and test equipment. Updated regularly since 2022, it embodies the original open-sharing spirit of the web, providing hard-to-find technical documents at no cost.
2026-07-07 Shortwave Radio Broadcast Tubes A specialized reference guide cataloging the vacuum tube types used in shortwave radio broadcast transmitters, organized alphabetically and numerically for easy lookup. The site also lists manufacturers, rebuilders, and distributors worldwide, including companies like Thales, Eimac, Penta Laboratories, and Xuguang, making it a practical industry directory for broadcast engineers.
2026-07-07 Solar Power Guide Welcome to Bob's Solar Energy Hobby Site!: Bob Robertson's hobby site is a sprawling reference on solar power, covering everything from basic definitions and how solar panels work to educational guides for kids and van-life solar setups. With dozens of articles on renewable energy topics, it reads like a one-man encyclopedia built by a retiree passionate about the subject.
2026-07-07 Stavros' Stuff Stavros Korokithakis documents his maker and DIY electronics projects, including building a custom $8 voice note recorder inspired by a discontinued pebble device. The blog blends technical tinkering with self-deprecating humor, making it an entertaining read for hobbyist electronics builders and software developers alike.
2026-07-07 The EE Compendium Electronic Engineering and Embedded Systems Programming: The EE Compendium is a comprehensive reference hub for electronics engineers, students, and hobbyists covering microcontrollers, embedded systems programming, and hardware development tools. Visitors will find curated links and resources spanning popular platforms like Atmel AVR, Microchip PIC, Intel 8051, and Freescale chips, along with project kits, robotics, software compilers, and career resources.
2026-07-07 Tonne Software Homepage Tonne Software offers a catalog of free and low-cost electrical engineering programs for Windows, covering filter design, meter scale drawing, great-circle mapping, Smith charts, and more. The site also hosts technical articles and tutorials on topics like speech processing, AM demodulators, and CW bandpass filters, many published or submitted to QEX magazine.
2026-07-07 Trevor Gales' Vintage Valves/Tubes Page. Trevor Gale's comprehensive reference site covers vintage vacuum tubes and valves, offering pinout data, characteristics lists, military-to-commercial conversion tables, repair hints, substitution guides, and circuit diagrams for old receivers and amplifiers. Maintained as a companion to the rec.antiques.radio+phono newsgroup FAQ, it serves as a practical technical resource for both seasoned restorers and newcomers to valve/tube circuitry.
2026-07-07 Vacuum Tubes, Electron Tubes, Tubes, Tube Testers and Electronic Parts Vacuumtubes.com, run by Jonathan Oas out of Hartland, MN, is an online storefront selling vacuum tubes, electron tubes, tube testers, tube sockets, and related electronic parts organized into extensive alphabetical tube lists. The inventory spans everything from rare Western Electric and antique tubes to popular audio types like the 12AX7, 6L6, and EL34, making it a go-to source for vintage audio and electronics enthusiasts.