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• Science: Technology: Electronics: Reference  (278)

This category in other languages:
	German  (38)

• Amateur Radio Construction Projects - Includes a simple CW station, and R1 - R2 DC receivers.
• Amateur Radio Homebrewing - A collection of projects and resources for Ham Radio Homebrewing enthusiasts
• Crystal Radio and Tubes - Dedicated to crystal and old battery radios, including tube sets. Includes restoration projects and plans.
• CW19 - Homebrew morse code training machine for HAM - A homebrew project. All PCB image, microcontroller code is uploaded and free for download. It utilize an Atmel microcontroller and LCD panel. Easy for construction.
• 73 de WD5GNR - Information about homebrew electronics, PC boards, micrcontrollers, Basic Stamps, and all aspects of ham radio. Projects, and tips.
• DF9CY - Christoph Petermann with articles on making antennas and equipment.
• DL4MEA, Guenter Koellner - Homebrew projects, especially VHF/UHF. Includes high power amplifiers.
• DL5NEG - Various receivers, transceivers and converters for HF to UHF.
• DSP-10 Project - 2-Meter transceiver that can be built at home. Plans.
• Electronic Hobby Information - Oscilloscope test adapters, testing ESR, octopus curve tracers, circuits,and wallwarts.
• Farhan's Homebrew QRP (VU2FAX) - homebrew transceivers, experiments, DSP
• F1FLA - X-Yagis - How to build big X-Yagis for VHF
• Fox Delta Amateur Radio Projects and Kits - Homebrewing projects and kits such as DDS, frequency counters, LCD power meter, and sound card interfaces.
• G0UPL Homebrew Radio, Electronics & Computers - Many homebrew projects for Radio, Electronics and Computers including QRP HF Radio, Z80 Computers
• HAM Antenna Plans and Projects - Plans, pictures, parts lists for HF, VHF, UHF antennas.
• HAM Projects - Technical information for HF, remote-control and digital decoding devices, plus a CPU-based hardware project.
• Harry's Homebrew - A resource for ham radio and electronics in general. Includes projects, reference documents, and kits.
• HB9ABX - Homebrew site with a hf-mobile, magnetic loop antenna and duplexer projects. Also cable datasheets are available.
• HDR-2005 - Homebrew DC receiver for approximate 300 kHz to 30 MHz. It is a direct conversion receiver with I/Q quadrature sampling detector. Includes schematics, photos and downloads.
• HF Projects - Classic HF receivers and electronic constructional projects including a telephone exchange, spectrum analyzer, and homemade TTL computers.
• Homebrew and Electronics Tutorials - Indonesian amateur offers technical information, projects, manuals and links.
• Homebrew General Coverage Radio Receiver - Detailed plans of a homebrew radio receiver. Frequency coverage is from below 300kHz to 30MHz. Pictures, schematics, board layouts, parts lists, and more can all be found here.
• Homebrew Spectrum Anlyzer Project. - This is an information page about a spectrum analyzer homebrew project based upon a TV tuner frontend. Much project related information is provided.
• Intelligent Solutions - Amateur radio accessory projects, software, schematics and kits.
• I6YPK - Descriptions and pictures of homebrew projects including an all band HF transceiver.
• IZ7ATH - Antennas, keyers, amplifiers and equipment for digital modes.
• JF1OZL - A large and varied selection of projects to build. English and Japanese text.
• K5DKZ - Offers information about homemade audio amplifiers, RF amplifiers, auxiliary ham radio equipment including antenna designs and constructions.
• KD7NRQ - Jason shares information on design and construction of a vintage 813 beam power tube CW crystal transmitter.
• K4GC's Homebrew Amateur Radio Page - Homebrew amateur radio site including tube and solid state transmitters and receivers.
• K5OE - Homebrew antenna site with mainly VHF, UHF and SHF projects.
• Magnetic Loop Antenna Plans - US amateur presents plans on how to build your own Magnetic Loop antenna.
• 2-Meter Antenna - All Copper 2 meter / 440 N2RGA Extended Double Zepp Antenna.
• 2 Meter Loop - Page contains pictures and plans for 2 Meter Loop for use on ssb.
• 7 MHz SSB Transceiver - Circuit diagram and description of 7 MHz Ham Radio SSB Transceiver.
• 7N3WVM - Many good hints and projects for the homebrewer.
• Projects and Software from KØEMT - Home brew projects and free software.
• Projects for Experimentors - Tools and information for amateur radio, radio astronomy technicians and builders.
• Psytronix Group - Radio modification and homebrewing information, schematics and manuals for commercial radio equipment and mobile phones.
• QRP HomeBuilder - Homebrew amateur radio receivers, transmitters, transceivers and accessories. QRP related.
• Repeater Builder's Technical Information Page - Providing information for making amateur and commercial repeaters.
• RTTY - FSK/AFSK Interface and Diagrams - How to remove the so called "ground loop" and the reentry in the RTTY broadcast.
• SM6LKM - Several projects including a complete 80 meter DSB rig.
• S57NAN - Homebrew transceivers and other projects.
• Spiderbeam - A multiband Yagi for 14.28 MHz. Technical data and a detailed manual in PDF are online. User reports and a kit service are available.
• The Spontaflex Reflex Page - The ingenious reflex circuits of Sir Douglas Hall as published in The Radio Constructor
• TEARA's Amateur Radio Homebrewer's Page - This page is a source for info and parts, used by homebrewers of Amateur Radio equipment and accessories.
• Technical Topics - Forum includes HF/VHF antenna projects, high power Russian GS35B RF amplifiers, mobile RFI solutions, and vintage radios.
• VE1KE - Offers information about the Jacobs Ladder, a portable 2 meter band amateur radio antenna.
• VK2ZAY.net - Site from Alan Yates, VK2ZAY, with his personal homebrew amateur radio projects.
• WA6CGR - Mostly microwave projects.
• W8ZR Homebrew Gallery - Jim Garland W8ZR's "homebrew gallery"
• Yahoo RFamplifiers Group - A forum for the exchange of how-to information about homebrewing RF power amplifiers for ham radio use, or for repairing and modifying boatanchor versions of same.