About Repeaters
An introduction to amateur radio repeaters, covering bands, linking, gateways, and operating guidelines.
Description
Amateur radio repeaters extend communication range for mobile and remote stations by retransmitting signals on a different frequency, often for emergency communications. The resource details various repeater bands, noting that 2 meters and 70 cm are primary for activity, with 10-meter repeaters offering potential national and overseas coverage. It specifies 18 channels on 6 meters and 31 channels on 2 meters, along with a new 70 cm offset of 7 MHz adopted in 2015.
The content explains how repeaters can be linked via dedicated transmitters/receivers, landlines, or Internet VoIP systems like IRLP and Echolink, enabling global connections. It also describes simplex gateways for multi-band operation and the use of CTCSS subaudible tones for access control and interference mitigation. The document highlights specialized repeaters for modes beyond voice, such as SSTV and ATV, particularly on 70cm and higher bands.
Operational guidelines for efficient and courteous repeater use are referenced, along with links to Australian repeater listings and band plans.