Linked Repeater Systems
An amateur radio repeater listens for an incoming radio signal and retransmits it using a higher power level. These devices are typically situated on hills, mountains, or tall buildings which extends the range of their transmissions. Repeaters allow ham radio operators with low power radios to communicate with each over longer distances.
Repeaters can be linked together into a repeater system. When you send a transmission to any repeater in the system, your transmission is relayed to all of the other repeaters in the system and each repeater broadcasts your transmission. You should listen for a few moments before sending a transmission to ensure you don't double on another operator. It can take a full second for all the links between the repeaters to activate. For best results wait a second after you key up your radio before you begin speaking: this will ensure your entire transmission is relayed to all the repeaters in the system. During your QSO pause frequently for several seconds to allow another operator to break in and activate all the repeater links.
Intermountain Intertie
The Intermountain Intertie is a system of linked repeaters located in Utah, Idaho, Wyoming, Arizona, and Nevada. The Utah VHF Society operates many of the repeaters. The Arizona Repeater Association operates the repeaters in Arizona, except for the one at Jacob Lake. The rest of the repeaters are operated by individual hams or other clubs. The Utah VHF Society coordinates the links between all the repeaters in the system.
Sinbad/Skyline
The Sinbad Desert Amateur Radio Club operates a linked system of repeaters in southeast Utah. So does the Skyline Radio Club, and the two systems are linked together. I call these linked repeater the Sinbad/Skyline Repeater System.
Dixie Amateur Radio Club
The Dixie Amateur Radio Club has linked together a few repeaters covering the area around St. George, UT.