For many clubs the repeater is the club: it is the shared asset, the daily meeting place and the largest recurring expense. Operating one is a long-term commitment to a site, a license and a budget. For how to use a repeater, see repeaters.
Coordination
Frequencies are assigned by a volunteer frequency coordinator — a regional or state coordinating body recognized by the amateur community, not by the FCC. Coordination is not legally required, but Part 97 gives a coordinated repeater the advantage in an interference dispute, which in practice makes it essential.
Expect the coordinator to ask for the site coordinates, antenna height above ground and above average terrain, transmitter power, expected coverage, the license and trustee of record, and your access tone. Keep the coordination record current: coordinators periodically confirm that machines are still on the air, and an unresponsive owner can lose the pair.
Site and infrastructure
- The site is the hard part. Commercial towers, water tanks, hospitals, fire stations, grain elevators and county communications sites all host amateur repeaters. Most site owners want a written agreement and a certificate of insurance. See bylaws and nonprofit status.
- Power and backup. A repeater on generator or battery backup is worth a great deal to your county's emergency managers, and is often the argument that gets you the site.
- Duplexer and feedline are not the place to economize; most "the repeater is deaf" complaints trace to tuning, connectors or water in the coax rather than the radio.
- Site noise. Shared sites are electrically hostile. Desense from a nearby transmitter is the usual cause of a repeater that hears poorly with a full-scale signal a mile away. See receiver performance.
- Remote access. Being able to reset, disable or reprogram the machine remotely saves many trips up a mountain in February.
Licensing and control
The repeater is normally licensed under the club call sign, with the trustee named as the responsible party. Automatic control is permitted for repeaters, but a control operator must be able to shut the station down promptly, so publish the control operator contacts to your officers rather than burying them in one person's memory. See club station licenses.
Money and access policy
Write down, before you need it: who pays the site rent and internet, how the club funds a duplexer failure, and whether membership is required to use the machine. Most clubs keep the repeater open to all licensed amateurs and ask for voluntary support; either policy works, but an unwritten one produces arguments.
Keeping it useful
- Publish the frequency, offset, access tone, coverage map and net schedule where a visitor can find them — your website, the national repeater directories and the club's directory listing.
- Run at least one net on it, so newcomers have a reason and a script for their first transmission. See running a net.
- Decide deliberately about linking, hotspots and internet gateways — reflectors, AllStar, IRLP and DMR bridges expand reach but change the character of a local machine, and that is a membership conversation, not just a technical one.
- Keep an asset and maintenance log: what is installed, when it was serviced, and who holds the keys. Repeaters most often die when the one member who knew all of that stops being available.