11/18/2015 The Plenary Meeting of the 2015 World Radiocommunication Conference (WRC-15) in Geneva has approved an allocation of 5351.5-5366.5 kHz to the Amateur Service on a secondary basis with a power limit of 15 W effective isotropic radiated power (EIRP). … Continue reading →
Emerging sunspot AR2339 unleashed an intense X2-class solar flare on May 5th at approximately 22:11 UT. Radiation from the flare caused strong radio blackouts on the Pacific side of Earth, interfering with communications at frequencies below ~20 MHz. The blast … Continue reading →
The annual Armed Forces Day Crossband Communications Test set for Saturday and Sunday, May 9-10, will offer Amateur Radio operators a chance to try their hand at using more modern military communications modes, such as MIL-STD Serial PSK. Also new … Continue reading →
There are many websites offering charts and graphs related to HF propagation conditions http://www.swpc.noaa.gov/. These display measurements of solar activity and their impact on Earth’s magnetosphere, ionosphere and atmosphere. On NOAA’s web site, there is a tremendous amount of information … Continue reading →