HF propagation conditions were very bad earlier this week. The culprit was a high-speed solar wind stream from coronal holes on the sun. The solar wind often exceeded 500 kilometres per second and had a south-facing Bz field at times. This meant that it more easily coupled with the Earth’s magnetic field – and plasma […]
The Leicestershire Repeater Group is pleased to announce that the new UHF beacon, GB3LEU, became operational on Sunday, 9 August at 1225UTC. It is near Markfield, Leicestershire, IO92IQ and transmits on 432.490MHz. It identifies in Morse as well as JT65. Reports and comments are very welcome to the Beacon Keeper, Geoff, G3TQF, via www.leicestershirerepeatergroup.org.uk. The […]
The RSGB annual Construction Competition closes at the end of September so now is a good time to think about your entry. Have you made something for you local club’s construction competition that could be entered? There are four classes: Junior, Beginner, Craftsman and Designer. Even team entries are allowed for a group build club […]
As more and more communications equipment designs have adopted digital signal processing techniques, the US company Rockwell Collins has announced that it will stop manufacturing its renowned mechanical filters. It did not provide a specific date. In a mechanical filter, input and output transducers convert the electrical signal to and from resonant mechanical vibrations. Rockwell […]
The International Lighthouse and Lightship Weekend takes place next weekend on 15 and 16 August. Stations will be on the air from all over the world and will give amateurs that chance to work some unusual stations. Visit www.illw.net for more information.