Organizations
ARRL
National amateur-radio association.
RepeaterBook
Worldwide repeater directory.
QRZ
Callsign lookup and forums.
AMSAT
Amateur satellite program.
Learn & Licensing
Ten more worth your time
DX Engineering
Gear & antennas.
Ham Radio Outlet
Equipment retailer.
On the Air (ARRL)
Beginner magazine.
Summits on the Air
Portable operating.
Parks on the Air
Activate parks.
Brandmeister
DMR network.
SigID Wiki
Identify signals.
PSKReporter
See where you're heard.
Ham Radio Crash Course
Tutorials.
ARRL Band Plan
Frequency privileges.