The KB7TBT Space Weather and Ham Radio Propagation Page

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Click Here: VHF Propagation Map




VHF Aurora : Status
144 MHz Es in EU : Status
144 MHz Es in NA : Status


Solar X-rays: Geomagnetic Field:






The HAP chart is a guide to frequency selection for HF communications between mobiles and a specified base station.





SOHO - 17.1nm

SOHO 17.1nm

SOHO - 19.5nm

SOHO 19.5nm

SOHO - 28.4nm

SOHO 28.4nm

SOHO - 30.4nm

SOHO 30.4nm


EIT 171 EIT 304 EIT 284 EIT 195 Continuum Photospheric Magnetogram CA II Magnetogram Catania Sunspot Groups






Created - 2/5/2007

Updated - 3-23-2017

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