Virgo is now Swan - tracking of meteor radiants A JavaScript skyview application for meteorscatter
				Virgo is retiring after 20 years of loyal service! Her successor is Swan, whose workplace is here: https://swan.ms Please note: Virgo's last working day is December 27, 2026. After that, the Virgo application will no longer function due to the lack of a database update.
			E-field probes: Comprehensive documents on theory and practice The collection contains the first comprehensive treatise on the theory of e-field probes by Daniel A. Esteban, LU2DDU
	Listen to the last electromechanic transmitter in the world: World Heritage Grimeton Radio (SAQ) on 17.2 kHz
	Baseband VLF WebSDR by DL1DBC as part of the PA3FWM WebSDR project
	Which ferrite material for a given frequency? Have a look into the graphic ferrite material survey to find the appropriate datasheet.