- Callbook Servers
- QRZ Callsign Database
- Commercial Sites
- Communications Analysis Prediction Wizard
- Durham Radio
- Electronix Express
- Gilfer Shortwave
- Ham Radio Outlet
- Ham Trader
- Icom America, Inc.
- Kenwood Communications Corporation
- QRZ Web Server
- Radio Progressive Montreal
- Raymond Sarrio Company
- Yaesu
- Durham Radio
- Clubs and Organizations
- Bloomington Indiana Amateur Radio Club
- AMSAT
- American Radio Relay League
- Indiana Section - American Radio Relay League Page
- Hoosier Hills Ham Radio Club
- The MinuteMan Repeater Association
- University of Waterloo A.R.C.
- Owen County Indiana Amateur Radio Association
- University of Technology in Karlsruhe Club
- AMSAT
- Digital Radio Communications
- K9IU APRS page
- Packet Radio Home Page
- Another Good Packet Radio Resource
- Packet Radio Home Page
- Education / Examination
- AA9PW's Amateur Radio Exam Practice Page
- Ham University Software
- Foxhunting
- Homing In
- HF & DX
- DX Summit