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Last update: 2/23/15
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Copyright © 2015, Amateur Radio Council of Arizona. All rights reserved.

Welcome to the web site of the
Arizona Repeater Owners Frequency Coordination Committee
a subcommittee of the
Amateur Radio Council of Arizona

Recognized / Certified by the NFCC

We interface with and cooperate with adjacent state certified coordinators for all near border coordinations.


The 2014 repeater owners' meeting will held at the Williams Hamfest.

The following revised "backyard pair" operation guidelines will be voted on at the 2014 Williams Hamfest:

The intent of "backyard pairs" was to make sure we always had a place for people to experiment and learn, and for those who did not need a large coverage footprint. By limiting power and antenna ht, that goal was met. Now, with most metro areas already gridlocked, the demand for the "backyard" frequencies is such that with the current guidelines, no one will be able to use them due to congestion.

This change reduces the antenna ht to 50ft, or 50ft AGL, whichever is less, and the Transmit ERP to 50w or less. Existing stations will not be grandfathered. That would defeat the purpose of the change. They will need to be brought into compliance with the new rules. Also, the requirement for portable repeaters to be on the air has been removed. The revised guideline will read as below:

The pairs 145.17/144.57, 145.19/144.59, 145.21/144.61 and 145.23/144.63 were designated as "Backyard" pairs by the repeater owners in Arizona in 1985. Portable operation was added in 2002. These pairs are intended for shared, local and portable operations. Some overlap is expected. Use of PL is mandatory. Operators agree to accept co-channel occupation and act to prevent inadvertent access by co-channel users. They are responsible for "PL" tone frequency coordination, but need to advise the coordinator of their choice. They agree not to operate in "beacon" mode, or intertie to other amateur frequencies that might monopolize the "channel". ERP is limited to a max of 50w with an antenna not to exceed 50 ft AGL and AAT, except that portable operation is limited to 10w transmitter power out. To minimize conflicts and interference, the repeater owner must check the "Portable Ops" page at before scheduling portable operations, and notify the coordinator as far in advance as possible so his/her operations can be added to the schedule. The schedule will include the date/time of portable operation, contact numbers and Email addresses so the owners can communicate any problems or concerns with each other.

The 2013 repeater owners meeting minutes are here.

The Frequency Coordination Committee e-mail address is:
coordinators at!
This address is valid for ALL the coordinators. Please include in the subject line of your e-mail a reference to the coordinator you wish to contact.

Please do not post this address on any web page without express permission from the coordination committee. However, you may freely link to this web page.

The Frequency Coordination Committee of the Amateur Radio Council of Arizona is a group of volunteer amateur radio operators who work to provide coordination services to the amateur radio community in Arizona. Coordination is performed for vhf and uhf frequencies to be used for repeater, digital and point to point operations. This service is available for amateur radio frequencies from 29 MHz and up.

The chairperson of the committee is appointed by the ARCA membership and is ratified by the repeater owners at their annual meeting each July at the Williams hamfest. The chairperson of the committee then choses the remainder of the coordinators.
Coordination policies are also made or revised at the repeater owners meeting.

The FCC gives preference to coordinated repeaters in interference situations (part 97.205), so it is to the advantage of anyone wishing to construct a repeater in the Amateur Radio Service to avail him or herself of the work of a NFCC certified coordinator serving the area where the repeater will be located.

The Frequency Coordination Committee of the Amateur Radio Council of Arizona is a charter member of the NFCC (The National Frequency Coordinator's Council)

This page is brought to you by the Amateur Radio Council of Arizona. The Council is a not-for-profit corporation in the state of Arizona. In other words -- nobody makes any money on this!
We ask that you support our effort by making a small donation. You can send checks to the ARCA post office box at:

16845 N 29th Ave., #312
Phoenix, AZ 85053-3041

Do NOT send applications to this address!
Send applications via email to the coordinaton committee's address listed on the Coordinators page.

This web site is updated on a regular basis. Please check back frequently for updates.