ARRL
National Association for Amateur Radio
QRZ
Callsign Database
Repeater Book
Repeater Directory
EchoLink
Communicate using streaming audio technology for licenses radio stations
The Solar-Terrestrial Data widget provides real-time updates on solar activity and its impact on the ionosphere. By checking the SFI, K-Index, and HF Band Conditions, our members can quickly determine which bands are open for DX, predict signal stability, and understand when solar flares might affect their radio operations.
The Solar-Terrestrial Data widget provides real-time updates on solar activity and its impact on the ionosphere. By checking the SFI, K-Index, and HF Band Conditions, our members can quickly determine which bands are open for DX, predict signal stability, and understand when solar flares might affect their radio operations.