VLF Radio Detection of SIDs (Very low Frequency detection of Sudden Ionospheric Disturbances)

Sudden Ionospheric Disturbances (SIDs) are changes in power level of very low frequency signals detected with simple equipment in our

From John at SARA Feb 2025: Hello,         The signals that we receive consist of a ground wave and

The graphs below show my graphs from these two days – the incredible aurora with the crown visible overhead came

The traces below show some SID-monitoring traces at very low frequency radio (23.4KHz) , demonstrating multiple large SIDs around the

Using UKRAA Sudden Ionospheric Disturbance Monitor (SIDs). (See https://sidstation.loudet.org/ionosphere-en.xhtml for more information on SIDs). 23.4KHz.

I am using one mini-PC for each radio astronomy experiment at LRO = these 2nd hand PCs are cheaply available

SIDs are changes in the ionosphere total power detected when solar flare hits the atmosphere. The power is detected from

I am grateful to the help of Andrew Thomas yesterday for helping me to tune my very low frequency (VLF)