This video provides clarification on the complex ways that radio communication systems work. Simplex, duplex and trunking systems are reviewed. This video is provided through the courtesy of the Western Region Homeland Security Advisory Council.
Chattanooga Amateur Radio Club
"Discover the magic and camaraderie of Amateur & GMRS Radio!"
ARRL Summer Field Day 2025
Chester Frost Park’s Shelter #2 was the site of ARRL Summer Field Day 2025.
Winlink Workshop
The Winlink Workshop Was a Blast! Last Saturday’s Winlink Workshop at Memorial Hospital was the best Winlink event we’ve done this year. ...
ARRL News
- Former FCC official John B. Johnston, W3BE, Silent Key
- The ARRL Solar Update
- North Carolina Students Scheduled to Make Contact with the International Space Station
- ARRL to announce winner of Icom® Dream Station at HamCation®
- ARRL Director Tharp, KB7HDX, Receives Search-and-Rescue Award
- Student Coding Competition is Underway with $25,000 Award
- Register Now for HamSCI 2026, Hosted by ARRL
- Winter Storm Closes ARRL Headquarters on Monday, January 26
- The ARRL Solar Update
- Now Shipping: the 2026 edition of The ARRL Repeater Directory® powered by RepeaterBook
Sponsor of Bouvet Island DXpedition
The Chattanooga Amateur Radio Club was a proud sponsor of the Bouvet Island DXpedition 2018.
Propagation
The Chattanooga Amateur Radio Club supports responsible radio operation as put forth by the DX Code of Conduct.