Portable HF antennas
- Excel sheet containing technical comparisons of commercial HF portable antennas compiled by ON4SKY. Includes pictures, manufacturer, db gain, band coverage, F/B ratio, price, weight and dimensions.
Installation of a Utility Poleupdated
- There are many ways to support an amateur radio antenna. Installatio of a utility pole will provide an antenna height of approximately 13 meters (40 feet) and will require no guy wires.
Radio Amateur Educational Society
- Provide instruction to obtain certification, a forum for technical exchange and advancement of amateur radio, a mentor program to actively encourage our students in passing the amateur exam. Based in canada
- HFpack provides an information exchange about transceivers, antennas, systems, HF packs, propagation, new developments and
techniques in HF portable operation. Radio Amateurs are invited to participate in egroup and on-the-air nets around the world.
Delabs technologies Product Design and Engineering
- Around 200 electronic circuits in pdf format or images, There are also over 1000 links to useful electronics, freeware, open source websites.
There are some 100 useful documents, software and pcbs too. Mainly industrial electronics, instrumentation. Covers Various aspects of electronics and basics of circuit design.
Automotive RFI elimination
- ARRL pdf file on how remove car noise from your radio. Modern vehicles are RF noisy environments. Come learn how to identify and silence yor mobile noise sources, by WA6PDP