Propagation Conditions

• ARRL Propagation Forecast Bulletins

• Real-time Day/Night Terminator

• Hourly Global Propagation Report

• SpaceWeather.com

Contests

• ARRL Contest Branch

• This Week's Contests

• WA7BNM 13-Month Contest Calendar

• Amateur Radio Contesting Resources and Information

• NG3K Amateur Radio Contest/DX Page

• National Contest Journal

• Northern California Contest Club

DX Info

• ARRL DX Bulletins

• DX Newsletter

• DX Summit

• DX.QSL.NET

• The DXZone

Callsign Information

• ARRL FCC License Data Search

• FCC Callsign Query

• Vanity Callsign Information

Other

• Logbook of the World