300 LINKS  COM VARIOS PROJETOS PARA VOCÊ MONTAR

• AF4K's HomeBrew Links - Hundreds of Them

• Alex's Electronic Test Bench

• Amateur Radio Guide - Homebrew - Ham radio homebrew links by The DXZone

• Amateur Radio Homebrewing - A collection of projects and resources for Ham Radio Homebrewing enthusiasts

• Amateur Radio Construction Projects - by John Seboldt, K0JD

• Amplifier Projects - from the ARRL

• Amplifier Construction Articles - From Svetlana

• Amplifiers - Scratch Built RF Amplifiers For Licensed Radio Amateurs - From Bob, WB0NNI

• Amplifier, Theory, Upgrades - AG6K, Richard L. Measures

• Amplifiers - A showcase of homebrew amplifiers. No detailed construction information but many pictures showing various designs.

• AMECO AC-1 - With a 6V6.  Homebrew or restore one. From W1GFH

• Basic Soldering Guide - by Alan Winstanley Via UK's Everyday Practical Electronics Magazine

• Build a 4 Element Cubical Quad (On-Line Dimension Calculator - input desired frequency).

• CO2KK - CW/DSB transceiver.

• Capacitance Meter - by Peter Parker VK3YE (ex VK1PK)

• Circuits and Files -- By Chris Williams

• Crystal Tester - by Peter Parker VK3YE (ex VK1PK)

• 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, tips, and more.

• 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 - Features the amateur-radio 2-meter transceiver that can be built at home. It operates on SSB, FM and CW modes. Features are tailored to operation with weak signals on VHF, UHF and Microwave frequencies.

• DUBUS Archives - Technical articles from DUBUS magazine in PDF format. VHF, UHF, and microwave.

• EI9GQ Home Brew Radio Page - All about home made amateur radio equipment.

• Electronic Hobby Information - Oscilloscope test adapters, testing ESR, octopus curve tracers, circuits,and wallwarts.

• F1FLA - X-Yagis - How to build big X-Yagis for VHF

• Field Strength Meter - Schematic & Details

• Field Strength Meter - by Peter Parker VK3YE (ex VK1PK)

• Floyd Everett's Jacob's Ladder Ham Radio Antenna - Floyd Everett inventor of 2-meter amateur radio antenna the Jacob's Ladder VE1KE Victoria New Brunswick Canada

• G3PTO - Oscillators, transmitters, receivers, test equipment and antennas. Mostly QRP oriented.

• G3SEK's Amateur Radio Technical Notebook - Author of The VHF/UHF DX Book shares design information on various types of equipment.

• G0UPL Homebrew Radio, Electronics & Computers - Many homebrew projects for Radio, Electronics and Computers including QRP HF Radio, Z80 Computers

• G3YCC - QRP/homebrew page.

• Harry's Homebrew Homepage - Good homebrew coverage and links. Many mirror sites available.

• High Power Vacuum Tube Based Power Amplifiers - by Scott Townley, NX7U

• Homebrew By Charlos Potma - PA3CKR

• Homebrew By G0CWT - G0CWT Magnetic Loop

• 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 Analyzer Project - This is an information page about a spectrum analyzer homebrew project based upon a TV tuner frontend. Much project related information is provided.

• 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.

• JG1EAD - Homebrew transceivers and a 500 MHz spectrum analyzer.

• Jim's Tech pages - Wireless Protocol Analyzer, CTP Descramblers, Online RF Calculator, Six Meter Duplexer, Two Meter Intermod Killer and more.

• JR3XUH - homebrew radio gear.

• K0JD - Amateur Radio Construction Projects

• K1EL's keyer based on a PIC microcomputer IC

• K4GC's Homebrew Amateur Radio Page - Homebrew amateur radio site including tube and solid state transmitters and receivers.

• KC5VQL - CW transmitter
  

• Lots of Homebrew Projects - By HB9IBF

• Logic Probe, 10 Mhz - From K3PTO

• MLA2500/MLA2800 HomeBrew Projects - From W5AJ

• Microwave - 10 GHz data-link project - By John Miles KE5FX

• Morse Decoder - CW19 From VR2NG

• Motorola - All About their Radios, Programming, Cables, Codes, etc.

• N4UAU - Sam describes some of the 25 projects he has had published in the Amateur Radio literature. There is also Information on kits for some of these.

• NA4G - homebrew firebottle radios 

• NRG - RF components and radio kits.

• NS8O - 160m CW/SSB transceiver

• Optimist 80m DSB 1 watt TX - By SM6LKM

• Pete's Hombrew Hobby Page - A site dedicated to Hams, SWL's, CB'ers, Homebrew'ers and electronics fans.

• Phone Patch Schematic - Heathkit - Click On HD-15

• Poor Man's Spectrum Analyzer

• QEX - the ARRL Experimenters Exchange

• QRP and homebrew by DL2YEO - QRP transceivers, accessories, and related information.

• QRP HomeBuilder - Homebrew amateur radio receivers, transmitters, transceivers and accessories. QRP related.

• RADIO RECEIVER - Build Your Own - Gary Pershin

• Repeater Builder's Technical Information Page - Providing information for making amateur and commercial repeaters.

• SM2EZT - Modified R2 receiver with DDS VFO

• SM6LKM - Several projects including a complete 80 meter DSB rig.

• S57NAN - Homebrew transceivers and other projects.

• 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.

• VK2TIP Ian Purdie's radio design - Homebrew.

• WA4KCY - Homebrew Legal-limit AM transmitters
  

• WA6CGR - Mostly microwave projects.

• WB4QXE - homebrew 
  

• WB4GWA - 813 transmitter 
  

• WB6EYV Doppler DF - Describes a homebuilt mobile Doppler D/F unit, with theory, schematics, parts list, and all PC artwork.

• WD5GNR - Solderless Prototyping System & Homebrew Pages

• W8EDU - Projects

• 2 Meter Loop - Page contains pictures and plans for 2 Meter Loop for use on ssb.

• 7N3WVM - Many good hints and projects for the homebrewer.

• Almost All Digital Electronics - Hobby kits, assembled units and software for electronics hobbyists, engineers and radio amateurs.

• Burle Industries, Inc. - Manufacturer and supplier of specialized electron tubes and electro-optic products.

• Cardwell Condenser Corporation - E.F. Johnson and Hammarlund air variable capacitors, inductors, and other electronic hardware.

• Circuits on Web - Electronics kits, projects and component for hobbyist and radio amateurs.

• DWM Communications - Radio kits, including a wide band active antenna, outdoor shortwave antennas, ham radio QRP transmitter, and an antenna tuner.

• Electron Tubes for Industry - Vacuum (electron) tubes for audio, broadcast, ham radio, hobby, industrial, academic and scientific users.

• Electronic Rainbow - Electronic kits for the hobbyist, education, industry, detective operations, and law enforcement. Includes CB sound, radio direction finder, and ham caller id kits.

• EzATV - Amateur TV transmitters, receivers, and accessories for ham radio operators. List of dealers and distributors, online ordering.

• International Radio - Crystal IF radio filters and performance enhancements for ham and shortwave radio products, also publications.

• Jackson Harbor Press - Ham radio related kits and chips such as Morse code keyers.

• NHRC Repeater Controllers - Repeater controllers and related accessories for amateur and land-mobile radios. Order by mail or phone.

• North Country Radio - Kits, including transmitters and receivers. Technical articles and information on electronic subjects geared towards ham radio, shortwave and video projects.

• N9TEW Tube Sales - Vacuum tubes for ham, audio and antique radio purposes.

• The page for DDS, ADI and PIC VFOs - Information for ham radio builders looking for simple VFO solution based on AD98XX DDS chips and PIC controllers.

• PMP3.net - Offers FM transmitter kits, schematics and related products.

• Powerwerx.com - Anderson powerpoles and OEM power connectors for amateur radio and other DC Hobbies. Also, batteries, RF adapters, bulk wire, red/black zip cord.

• Quality Kits - Components and kits for audio, RF, digital, and antenna projects.

• Ramsey Electronics - Hobby kits, amateur radio gear, antennas, AM/FM broadcasters, security and monitoring cameras, test equipment, and tools. Downloadable catalog [PDF], FCC information, and forums.

• RogRadCo - Crystal radios, kits, parts, books, and cabinets.

• Sherwood Engineering Inc. - Kits, components, and custom IF filter enhancements for most communications receivers.

• SHF Microwave Parts Company - Microwave and RF parts for datalinks, television, voice, and telemetry.

• Sphere Research Test Equipment - New and used electronic test equipment, tubes, semiconductors, RF and microwave products, and sliderules.

• 2304 Tech List - Many radio atenna building project documents on-line. Pages have also many radio equipment plans on-line.

• 4QD Electronics Circuits Reference Archive - 4QD's pages of interesting circuits with wide selection of small circuits useful as building blocks for electronic systems

• Aaron's Electronic Circuits - light, laser, sound, radio, PSU, car

• Alfred73 Electronics - SMT Desoldering Station, Infrared Receiver, line in use, VGA to TV, power supply

• Amateurfunk- und Elektronik-Projekte - amateur radio electronics project in German

• Amazon Electronics Free Circuits - audio, computers, controllers, testers, light effects, microcontrollers, power supplies, radio, security, timers, circuit can be also bought as complete kits from Amazon Electronics

• Ampage - guitar effects and music electronics

• Analog Circuits Webpage - audio, video and more appliacations

• Analog Music Zone Guitar Effects Schematics - guitar effects, compressors, microphones and effects

• Andrew Buckin Projects - VGA generator, SVGA generator, IDE2LPT, CPLD projects

• Antenna Scope, Attenuators,RF Probe, MORE!

• Applications of neon glow lamps - some applications of neon glow lamps

• Aquarium Related Electronics - pH meters, thermometers

• Aren's Attic: How to build your own audio equipment - loudspeakers, solid-state amplifiers and tube amplifiers

• Audio Designs Guide

• Audio Electronics Page - amplifiers, preamplifiers, power supplies

• Batronix.com - electronic circuits, information, software and datasheets to download for electronics hobbyists, programmers for EPROMs and microcontrollers

• Bebec Electronic kytkinkaavat - dozen different hobby circuits, site in Finnish but most circuits can be understood by viewing just pictures

• Bebek Electronic rakennussarjat - five different hobby circuits, site in Finnish but most circuits can be understood by viewing just pictures

• Beyond Logic - PC interfacing projects

• Bob Blick's Assorted Electronics Projects

• Brainstorming page - electronics hobby circuits, page is in German but you can try to access it using automatic English translation

• Burning Flux - musical instruments and audio/video projects

• Circats - simple electronics circuits

• Circuit Exchange International - schematics on radio and electronics, circuit analysis, circuit theory and electronic design

• Circuitos Electronicos - electronics circuits, text in Spanish

• Circuits from Forrest Cook - NiCD charger, radio, audio, microprocessor

• Circuits for the Hobbyist - many quite simple circuits

• Circuit Lab - lots of different circuits from Electronics for You magazine

• Circuits Online - Dutch electronics site with circuits, forum, datasheets, links, downloads, articles, info, newsletter, etc.

• Classic and Vintage Audio Circuits Page - some audio equipment circuits and links

• CommLinx Solutions circuit links - Links to hundreds of circuit schematics available on the Web formatted onto a single convenient page

• Computer Hardware Projects - computer oscilloscope and car MP3 project

• Cool Schematics - solid state and tube guitar amplifier circuits

• Crystal Radio Projects - AM receivers, FM receiver, tesla

• CyberCircuit Circuit Archive - many different circuit ideas

• CXI Schematics - alarm, security, control, interfacing, music effects, radio, power supplies, switching, test gear

• Dan Fraser's Electronic Info & Schematic Page - audio circuits, monitor repair

• DesignNotes.com Free Circuits Archives

• Diana's Electronics Info Page - simple amplifiers, solid state oscilloscope, stepper motor projects, led circuits

• DIBs Circats - simple circuits in GIF and PDF format, audio and microroprocessor related circuits

• Die Xedox Elektronikseiten - some electronics project, text in German

• Digital Circuits Webpage - gate applications, flip-flop, counter, computer I/O, display, RS-232

• Discover Circuits - a collection of schematics quick solutions for electronic engineering problems compiled by David A. Johnson

•  Modem 9600Bds de G4XYW (circuit modifié, Scc, Tnc, Port série) English version here !!!
   Milliwattmètre SHF 1mW - 1W sans étalonnage.
   Calculer les valeurs à envoyer sur un pll MB1501 ou MB1504 (Nokia, OL emetteur 47Ghz pro)
   Alimentation à découpage 12v > 28v (pour relais coaxiaux, modules hybrides.. etc...)
   Diviseur par 8 avec un FMM110vj
   Un générateur d'harmoniques jusqu'a 1296Mhz... au pire!
   Une interface SSTV
   Un générateur vidéo pour l'ATV
   Un séquenceur Tx/Rx
   Une alimentation écran pour tube de la série 4cx, 4x....
   Une alimentation de polarisation pour tube de la série 4cx, 4x....
   Description d'un amplificateur à base de 4cx250 sur 2 mètres.
   Préampli "LNA144" (DJ9BV)
  Antenne double-quad UHF pour le packet 
  

• DIY Audio Amplifier Page - audio power amplifiers

• DMZ Schematics

• Dr Bob's Electronic Projects - amplifier circuits, chargers, flashers, meters, motor, oscillator and power supply

• EDN Archives - contains past issues of EDN magazies which contain design ideas and other circuits

• EDN's Design Ideas Archives - circuit archive which you can access with search engine

• Effect Rack Unit - contains very many guitar effect unit circuit diagrams

• Effectronics Schematics - audio processing and effect circuits

• ELEC.de - large circuit page, text in German, you can use automatic translation to English

• Electronics 2000 - tens of different circuits to download

• Electronics 2000 - many different electronics circuits on two alternative laguages

• Electronics and schematics - some PC parallel port and RC servo circuits

• Elecronics Projects for R/C

• Electric Model Aircraft Circuit Diagrams

• Electronic Circuit Beans Collection - small circuit useful as building blocks, oscillators, power supplies

• Electronic-Circuits for Model-Aircrafts - contains also some microcontroller projects

• Electronic Cookbook Archive - place for electronics enthisiasts to share circuit ideas with others

• Electronic Projects Online - contains 25 of the most popular magazine projects designed by Paul Stenning for various electronics magazines between 1993 and 1997

• Electronics 2000 Project Pages - projects with circuit board, theoritical diagramm and description, many circuit from Smartkit electornics kits

• Electronics and Radio Section - radio, tube audio, tesla, software

• Electronics circuit designed by Tomi Engdahl - audio, video, computers, telephone, light effects, measuring, power supplies, electronics documents

• Electronics circuits / do-it-yourself homepage - this site contains thousands of electronics circuits & do-it-yourself circuits relating to a wide range of categories like audio,music,home/garden related,computer hardware,radio,robotics etc.

• Electronic Circuits for the Hobbyist - simple circuits, radio, flasher, amplifier

• Electronics for You Circuit Lab - circuits and short articles describing them

• Electronic Circuits for the Hobbyist - lots of different simple circuits for different applications

• Electronics Projects by Paul Taylor - some simple electronics projects

• Electrical circuits for model railroad hobbyists - light flashers, constant light, power supplies

• Electronic Cookbook Archive - very good electronics circuit archive, also available using FTP

• Electrical Engineering Circuits Archive - lots of small circuits, ideas and datasheets

• Electronic Design Ideas For Design - many useful circuit ideas

• Electronique Schémathèque - different circuit sections on many areas, text in French

• Electronics Gadgets for Radio Control

• Elektroniikan harjoitustöitä - simple electronics circuits, instructions in Finnish

• ElectronicsZone - tons of free electronic circuits arranged into different categories

• Electronics Zone - This site contains lots of circuit diagrams & do-it-yourself circuits for hobbyists, students,professionals etc. relating to a wide range of categories like audio, music,home/garden related,computer hardware,radio,robotics etc to name a few.

• Elliott Sound Products Audio Design and Information Pages

• Elliott Sound Products Audio Project Pages

• ESP Audio Projects - power amplifiers, power supplies, crossovers, miscial instrument circuits, mixers,

• FC's Electronic Circuits - solar power circuits, FM broadcasting, NiCd charger and other circuits

• FC's Solar Circuits

• ftp.armory.com - microcontroller information and circuits

• George Krilov audio schematics page - page is about transistor audio power amplifiers, contains articles about power amplifiers shematics, design, construction and SPICE simulation, page is partially in English and partially in Russian

• GEO's Effect Schematics - collection of vintage and new-design effects and musical related DIY

• Glolab Free Schematic Diagrams - wireless circuits, motion detector, encoder, decoder, PIR, RF, telephone, video

• Gonz Projects - power supplies, automation, signal generators, frequency meter, text in French

• Guitar Effects Boxes - guitar effect schematics and articles

• Guitar Effects Schematics

• Guitar-related Circuits - effect circuit collection

• HAM radio circuits at nic.funet.fi - some circuit for radio amateurs

• Hardware Web - software, links and midi circuits

• Harry's Homebrew Homepage - very many radio related projects

• Harry's Homebrew Homepage by Harry Lythall SM0VPO/G4VVJ

• HeadWize Projects - many headphone amplifiers and related circuits

• Electronic projects by Roberto Barrios - HAM radio programming cables, Luxman I Bus Interface, SPDIF adapter, serial port power booster, radio interface box

• Electronics Hobby Projects

• Homebrew Test equipment - test equipment built by experimenters and amateur radio enthusiasts

• Homebrew Test Equipment and Software - several projects which will allow you to build your own RF design test equipment

• Hybrid Circuits Base - circuits with analogue and digital parts in them

• Ideaport - electronics circuit for school projects, text in Finnish

• Imagineering On-Line Magazine Hobby Circuits - wide variety of circuits, tens of circuits

• JF1OZL QRP Hand Made Radio - very many amateur radio links

• Keith's Rainy Day Projects -

• Kelly Kohls, N5TLE Homepage - DMX 512 Light control circuits

• Kobra Electronic Free Schematic Page - 300 free circuit diagrams

• Laurier's Handy Dandy Little Circuits - site for electronic hobbyists, includes all kins of small electronics hobby circuits

• Library of Practical Electronics - circuits and articles from sci.electronics.* newsgroups

• Linear Electronics Troubleshooter- contais lots of circuits from power supplies and pulse generators to PLC laddler logic controlling

• Manic Hand Builder - Pure amateur hand builders webpage for HAM. Designing PCB mask pattern by MS-paint, make own UV-sensitive thin-filmed PCB from junk PCB. Build DDS VFO controled by PIC16F84. Build ARDF receiver, using PLL LO, controlled with PIC.

• Munira's Hobby Circuits - collection of electronic circuits for the hobbyist or student

• Microchip Net resources - PIC project link list

• Model Railroad Electronic Circuit List - Many simple electronics circuits not show in a schematic drawing but using simple wiring drawings.

• Music Electronics µArchive - music circuits and audio electronics information

• Music Machines do-it-yourself/schematics - music electronics circuits and electronic musical instruments

• Mycal's Micro Radio Page - radio transmitters, antennas and amplifiers

• Nathan's Audio And Electronic Webpage - audio circuits

• Nick's Circuits collection - infrared, telephone, sound, smartcard, filters

• North Country Radio Kit Schematics - only circuit diagrams of RF kits with no component values shown

• Olec Electronics & Computer Club Hobby Electronics Circuits & Ideas

• Open Collector - pages intended to encourage the growth of Open Hardware and to provide a resource for those working on it

• Ozitronics Audio Amplifiers & Voice Recorders - kit catalogue which includes full circuit diagrams

• Packet BBS NL3ASD Amsterdam - schematic section contains lots of HAM related circuits

• PC Elektroniikkaa - Simple circuits which connect to PC and PC port information. Text in this site is in Finnish.

• Peter's Electronics Playground - stepper motor driver, data acquisition with A/D converter, onnecting via parallel port, LCD interfacing, PIC measurement device with LCD and A/D

• PI6ATV software and circuits - amateur TV related circuits and software, radio, video

• PIC / Ubicom Dev'rs - communication circuits using PIC, encryption, interfacing, Internet applications using PIC and many other PIC circuit

• Pro Audio Equipment Schematics Page - Alan Garren's excellent listing of vintage gear schematics including API, UREI, Altec, RCA and more

• Programmers Heaven Amiga Hacks and Projects - Amiga circuits

• Prolectron Electronics Schematics - electret microphone circuits, opamp circuits and simple transistor circuits

• RadioLockman database of circuit's links

• Randy Linscott Projects of the Month - many interresting projects

• RED Free Circuit Design - amplifiers, measuring equipments, health circuits, hobby model circuits, music circuits

• Richard Steven Walz's Electronics Circuits FTP site - over 900 electronics ascii files

• Robin Tomtlund-The Electronic Page - guitar effect circuits

• Rollins World Wide Web Circuits - simple electrical circuits for beginners

• Russian Electronic - circuits in many categories, many texts in Russian but some in English

• Rutger's World of Model Railroad Electronics

• S51KQ hardware & software - ATV, antenna, video circuits, PLL, LANC, DV, paging, FM broadcasting

• Sam Electronic Circuits - Electronic Circuits for the Hobbyist. Audio and digital,useful circuits with full description and diagrams. Text in English and Greek.

• Saint Audio Do It Yourself Zone - small circuits, speakes, hifi circuits, tybe amplifiers, DIY cables

• Salvio Klaic's electroni section - tranformers, IC testers

• Sam's Schematic Collection - various schematics and diagrams

• Schematics FM transmitters - collection of FM transmitter circuits

• Science & Technology of high voltage generators - A page on high voltage multipliers, a circuit on driving flybacks (with a large capacitor as protection) and power supplies

• SDS Labs Schematics - hifi circuits, tube amplifiers, audio DACs

• Simple Circuit - lots of circuits in many categories

• Snock's High Voltage Page - detailed explanation on flyback, ignition coil circuits and pictures of various transformers

• SP-Elektroniikka kytkennät - light controlling, amplifiers, meters and remote controllers, text in Finnish, circuti board design available for most of projects

• Synthfool Lite Schematics - many musical instrument and effect circuit diagrams

• Switching Circuits - collection of switching circuits for temperature, light level and button controlled switching

• The Electric Wave - selection of various hobby circuits

• The Electronic Resource - IO interfacing via ISA card or parallel port, single board computers, robotics

• The GEO-Fex collection of vintage and new-design effects and musical related DIY

• The Guitar Effects Oriented Web Page - FAQs and circuit diagrams

• The Nexus Project - Video conversion and Macrovision removing circuits.

• Tronnort Technology Electronics Projects - video, storage oscilloscope, frequency counter, logic analyzer, EPROM programmers, RS.485 multiplexer

• VK2TIP Ian Purdie's radio design tutorial pages - for amateur, ham radio, electronic project enthusiasts as well as the electronic hobbyist

• W.A. Steer - ADC, video digitizer, RS232 solutions, science experiment circuits

• WebEE Schematics Page - large collection of circuits, mirrored to www.epanorama.net from WebEE site

• WE-MAN's Electro stuff - many circuits and documents

• Wenzel Associates Technical Library - application notes and circuits

• Wenzel Associates Circuit Notebook - for Engineers and Hobbyists

• World Of Electronics - electronics projects in German, electronics display projects

• Xexorz Schematics - radiation meter, radio circuits, IR circuits, light circuits

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