The 28 MHz antenna in the middle is not often used due to poor ionospheric propagation nowadays. An auxiliary 28 MHz antenna up front against a forest of 70-cm arrays. The total number of antenna ...

The Bureau of Meteorology's Ionospheric Prediction Service (IPS) offers radio propagation, geophysical and space weather services to Australian and overseas agencies. The IPS team has a diverse ...

First, the numerical model of the long-distance propagation of LEMP in the Earth-ionosphere waveguide (EIWG) is constructed by using the auxiliary differential equation finite difference time domain ...

We asked whether such a signal could be provided to us from our local, naturally occurring plasma: the ionosphere. Given that it is extremely well monitored and understood, it seemed to us like a ...

0° 33′ 30″ W.). When electric waves from a radio transmitter pass through the ionosphere ... rotation when looking along the direction of propagation. The critical frequency for this ...

Accurately predicting the maximum usable frequency (MUF) is crucial for improving the efficiency of HF ionospheric propagation. However, when there are only a limited number of ground-based stations ...

Compressed data would sound like noise. Other theories are that the buzzing studies the ionosphere or that it is part of a doomsday system that would launch nuclear missiles. Given that the ...