National Organizations
ARRL — American Radio Relay League
National association for amateur radio. Licensing, publications, contests, and advocacy.
arrl.org
FCC Universal Licensing System
Manage your amateur radio license, look up callsigns, and file applications.
fcc.gov
Licensing Study
HamStudy.org
Free online practice exams and flashcards for all license classes. Excellent spaced-repetition study tool.
hamstudy.org
ARRL License Manuals
Official ARRL study guides for all three license classes. Available in print and digital.
arrl.org
Digital Modes & Software
Winlink Global Radio Email
Worldwide radio email system used for EmComm and personal messaging without internet.
winlink.org
JS8Call
Keyboard-to-keyboard messaging using FT8 technology. Great for EmComm check-in nets.
js8call.com
Logging Software
N1MM+ Logger
The most popular free contest logging software. Supports virtually all contests with Cabrillo export.
n1mm.hamdocs.com
DXLab Suite
Comprehensive suite including DXKeeper logger, SpotCollector, and Pathfinder DX resources.
dxlabsuite.com
Propagation & Tools
VOACAP Propagation
HF propagation prediction tool based on NOAA data. Point-to-point and area coverage maps.
voacap.com
PSK Reporter
Real-time signal reporting map — see who is hearing your transmissions on FT8 and other modes.
pskreporter.info
HamClock
Configurable ham radio desktop clock showing UTC, solar data, band conditions, and DX spots.
hamclock.com
EmComm & ARES
ARRL ARES
Amateur Radio Emergency Service — national program for disaster communication preparedness.
arrl.org/ares
Greene County ARES (GCARES)
Our local ARES affiliate — training, activation, and coordination for Greene County.
gcares.net
FEMA ICS-100 Training
Free online Incident Command System training — required for EmComm deployment in most areas.
fema.gov