Estes Valley Amateur Radio Club
- Provides a meeting schedule and a list of repeaters. Located in Estes Park.
- http://www.evarc.org/

Pikes Peak Radio Amateur Association
- Features a message from the president, information about membership, meetings, training sessions, programs and Field Day. Located in Colorado Springs.
- http://www.ppraa.org

Rocky Mountain Ham Radio
- Operates several repeaters in the Denver area. Includes repeater frequencies and APRS information.
- http://www.rmham.org/

BARC - Boulder HAM Radio Club
- Information about testing sessions, membership, and the club's repeater.
- http://www.qsl.net/w0dk/