- The National Association for Amateur Radio. (ARRL)
- Federal Communications Commission (FCC)
- ARRL Ham Radio Band Plan. (Frequency Band Charts)
- Ham Radio Maps. (Various Useful Maps)
- QRZ.com (The who’s who of Radio Hams)
- QSL.net. (Free Web Services for Ham Radio)
- QRZCQ.com (Ham Radio Database)
- Logbook of the World. (ARRL Electronic QSL Site)
- eQSL (Electronic QSL site)
- Club Log. (Electronic QSL site)
- New England Repeater Directory. (Directory of Radio Repeaters)
- Repeater Book. (Directory of Radio Repeaters)
- Radio Reference (Scanning frequencies)
- WA7BMN Contest Calendar.
- eHam.net. (Lots of Ham Radio Information)
- KiwiSDR.com. (Listen to SDR Radios located around the world, Free !)
- KiwiSDR Map View. (World Map of Kiwi SDR Radios to listen to, Free !)
- KiwiSDR List View. (Listing of Kiwi SDR Radios around the world)
- The Amateur Radio Testing Group. (All about getting your Ham license)
- Brandmeister DMR Dashboard. (DMR Network Information)
- Brandmeister Hoseline. (Listen to Live DMR Digital Radio)
- DMR-MARC. (The DMR-MARC Worldwide Network)
- Radio Society of Great Britain. (The UK National Ham Radio Association)
- Under Construction.