Ham Radio Utilities

Call Sign Lookup
 

FCC License Search (U.S. Call Signs only)

ARRL FCC License Data Search

QRZ.com

Time
 

Time.gov  Official U.S. Time 

Near Vertical Incidence Skywave (NVIS) Critical Frequency
 

Eglin AFB Critical frequency (foF2) and maximum usable frequency (MUF)

Maximum Usable Frequency

Critical Frequency (foF2)

HF Propagation

VOACAP Online for Ham Radio

WSPRNet 

Digimode Automatic Propagation Reporter

HamSpots

 Other
 

ADIF to Map Amateur Ham Radio Contacts by K2DSL

Frequency Wavelength Calculator