Hobby Projects - Insulation tester, LED Circuits, Meters.

Saturday, September 29, 2007

VKHam.com - Australian Amateur Radio

VKHam.com - Australian Amateur Radio

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

YO5OFH Csaba HAM Radio

YO5OFH Csaba HAM Radio

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.

Monday, September 17, 2007

WB4HFN Amateur Radio Website

The vintage radio equipment from the R.L. Drake Company. Life before solid state devices,..vintage radio equipment from the Collins Radio Company. Featuring the "S" Line radio equipment from the 1960's and 70's era.
WB4HFN Amateur Radio Website

Antenna construction, digital communications, operating tips and practices to handling CATV interference
Amateur Radio And Resource Information
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.

Wednesday, September 05, 2007

Electronics Reference Library - Bill

Electronics Reference Library - Bill

Resistor Color Codes, Transistor Pinouts, Perf Board, Custom Etched Circuit Boards, Enclosures
Custom Front Panels, Safety Considerations.

Saturday, September 01, 2007

Homo sapiens to 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 sapiens to Homo Ludens

  • 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.

A 40 meter SSB QRP transceiver

A 40 meter SSB QRP transceiver

"This transceiver was conceived as a power-efficient, small, lighweight unit to be carried in the backpack, along with antenna and battery, for use during trekking and mountaineering trips. It had to be reasonably rugged and reliable, and perform well. Furthermore, I wanted it to solve all the problems the old DSB transceivers had, such as frequency instability, distorted modulation, lack of sensitivity and selectivity, and others."