- VK Callsign Lookup
- World Ham Maps
- Amateur Repeaters Maps
- Aust. CB/Marine/VHF Info
Saturday, September 29, 2007
Monday, September 17, 2007
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
Saturday, September 01, 2007
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.
"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."