ARRL Amateur Radio Relay League

QRZ - Look up FCC Registered Call Signs

D-Star Users - Information for D-Star Users and Contacts

HRO - Ham Radio Outlet - Browse New Radios

Amateur Radio Repeater Database

Texas Interconnect Team

D-Star Wiki - Great Reference for D-Star

D-Star Guide Book

D-Star Forum

D-Star Worldwide Information

Icom America D-Star Manuals and Information Download

General HAM Information - Covers all basic topics

HamTest Online - Take Practice license tests online