PY2WM JK De Marco Projects

PY2WM JK De Marco Projects

• 5 Volts Reference Voltage Calibrator
• Simple Homebrew Coil Winding Machine
• Qrp-Br Spectrometer
• Swr Power Measuring mW To KW

Lars Petersen OZ1BXM QRP Denmark

Lars Petersen OZ1BXM QRP Denmark

Amateur radio homepage by Lars Petersen of Holstebro, Denmark

CW, QRP, and satellites.

• Five good rules for the QRPer
• The Rock-Mite transceiver
• PIC experiments
• Main HF rig and antenna
• Satellite radios

QRP Homebuilder Short Wave Radio

QRP Homebuilder

Amateur and Short Wave Radio Electronics Experimenter's Web Site

"The QRP/SWL Homebuilder site is owned and maintained by VE7BPO. The purpose of this website is to promote experimentation with relatively simple radio electronic circuits. Please keep in mind that I am a novice, lay person experimenter, not an engineer. "

• Popcorn DC Receiver Mainframe
• 40 M popcorn Superhet Receiver
• Crystal Oscillator Frequency Offsets
• Broadband Transformer Topics
• Powdered Iron Torroidal Coating
• Astable Multivibrator Circuits
• W7ZOI JFET Biasing Tutorial

Radioing - RF calculators and Virtual Museum

Radioing - RF calculators and Virtual Museum

eHamRadio

• Library - exams, code, operating aids, DX
• Ham Tools - RF calculators, conversions
• Virtual HamShack, callsigns, links, photos

eEngineer

• Electrical Engineering Topics
• Electromagnetics, Glossary
• Interference, RFI

Ham Radio Virtual Museum

• A Virtual Museum of Ham Radios
• Transmitters, Receivers, Transceivers
• Photos & Specifications of the Classics

VK5JST Amateur Radio Ideas with Photos

VK5JST - Easy PCB's Made With Kitchen Appliances, How to Make a Q Meter and more.

• Easy PCB's Made With Kitchen Appliances
• How to Make a Q Meter
• Making a High Current 13.8 VOLT Supply For SSB Transceivers
• VK5MM's excellent amateur radio homepage
• Transformer Construction Details

The photos at VK5JST Homepage are very educative and express the idea better than words. - delabs

KD7LMO amateur radio and open source hardware

KD7LMO amateur radio and open source hardware

Nixie Tube Clock

"In the pioneering sprit of amateur radio and open source hardware and software, I've assembled a collection of information and engineering plans for a variety of amateur radio projects. These projects cover a wide range of disciplines." - KD7LMO

VKHam.com - Australian Amateur Radio

VKHam.com - Australian Amateur

• VK Callsign Lookup
• Aust. UHF CB Repeaters
• Radio Related Links
• World Ham Maps
• Amateur Repeaters Maps
• Aust. CB/Marine/VHF Info

YO5OFH Csaba HAM Radio

YO5OFH Csaba HAM Radio

• Analog circuits
• Circuits controlling relays
• Computer circuits
• Digital circuits
• Electronical basic circuits
• LED circuits
• Miscellaneous
• Power sourse circuits
• RF circuits
• Telephone circuits

YO5OFH, Csaba Gajdos from Transylvania, in the north-west part of Romania, in a little city - Satu Mare

Acronyms, CW , Data Sheets, Docs, Ham projects, Photo galery, PIC, QTH photos.

WB4HFN Amateur Radio Website

WB4HFN Amateur Radio Website

Drake Vintage Amateur Radio Equipment

The vintage radio equipment from the R.L. Drake Company. Life before solid state devices,..

Amateur Radio And Resource Information

antenna construction, digital communications, operating tips and practices to handling CATV interference

Collins Vintage Amateur Radio Equipment

vintage radio equipment from the Collins Radio Company. Featuring the "S" Line radio equipment from the 1960's and 70's era.

Heathkit Vintage Amateur Radio Equipment

One of the first all solid state radios produced by Heathkit Company in the mid 1970's was the SB-104 Transceiver.

Homo Ludens

Homo Ludens

A long, long time ago a bright ape figured out that by climbing down from the trees he could more easily master his life, and that of others......Homo sapiens wanted something else, and better. He started to play. Homo ludens was born!

• Homo ludens radiactivus - amateur radio
• Homo ludens radiohistoricus my antique radio collection
• Homo ludens electronicus - electronic projects
• Homo ludens aeromodellisticus - model airplanes

Transformers and coils: This is not a building project, but a short and concise lesson in how to design electromagnetic parts. It's much simpler than what you may expect!

Thermal design: A short course in keeping electronic parts adequately cool.

Rico Schurig - NH7T/DF2CK - Ham Pages

Rico Schurig - NH7T/DF2CK - Ham Pages

• WLAN two Port Splitter
• Waveguide Properties
• SMA-Relay Properties
• Helix Antenna Design
• 23 cm Yagi Construction
• worked DX vs. Radar Pics

QRZ Ham Radio

QRZ Ham Radio

QRZ Quick Links

Database - QRZ Forum - Swapmeet - Practice Tests - Downloads - Radio Mods - Becoming a Ham

QRZ was founded in 1992 by Fred Lloyd, AA7BQ as a spinoff of what was once called the "Callsign Project", a cooperative effort designed to obtain and distribute FCC database tapes.

TK5EP's home

TK5EP's home

TS850's heavenAlmost everyhting you wanted to know about the TS850. Schematics, mods, repair informations, and much more.

A remote interface compatible with the original IF232 with opto-electronic isolation is also described.

Gain chart - Made with help of F5BU's software GALVA, this small chart will help you to calculate SWR, gain, loss, RL return loss within a few seconds.

PA3BWKs Ultimate Morse Code Web Site

PA3BWK's Ultimate Morse Code Web Site

Wilko J. Hollemans PA3BWK

• pdf library
• building projects
• morse code study tips

QRP and homebrew by DL2YEO

QRP and homebrew by DL2YEO

Front Panel Design, Components, 40 m Band Superhet Receiver, 40 m Band Direct Conversion Receiver, 40 m Band Receiver without ICs, Tx/Rx Control Circuit, Some useful Tables, 13.8 V / 15 A from a PC power supply, 250 W S.M.P.S. with power FETs, Power Supply for small Tube Amplifiers.

Calculating SWR meter, Thermal Power Meter, Analogue Frequency Display, Selective AF Amplifier, Simple IF Amplifier and Filter, QRP push-pull RF amplifier, 30 m Band Direct Conversion Receiver, 80 m Band Direct Conversion Receiver, 30 m Band QRP Transceiver, AGC and S- Meter, Oscillators, Sidetone Circuits.

Harry's Homebrew

Harry's Homebrew

Harry's Homebrew Homepages; a resource for radio, hamradio and electronics in general. Harry Lythall
SM0VPO/G4VVJ.

Antenna projects, Receiver circuits, Transmitters circuits, AF / Amps circuits, Morse Code, PSU circuits, Useful circuits, EPROM circuits, RF Converters, Synthesizer circuits.

RASON Projects Page

RASON Projects Page

Designing Bipolar Transistor Audio PreAmps, Designing JFET Transistor Audio PreAmps, Designing Op Amp IC Audio PreAmps, Switching Regulator Basics, Using Transistors As Switches.

FCs Electronic Circuits

FCs Electronic Circuits

Solar Power Circuits charge control, LED lights, Amateur Radio Circuits, beacon keyer, smooth sidetone, antenna tuner. Micro Power FM Broadcasting Circuits FM stereo, J-Pole, Pulse Width Modulator PWM Circuits, motor speed controls, Geiger Counter Circuits, numerical counter. Video Circuits, camera motor, miniature camera-TV.