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IMPORTANT: Any coordination, re-coordination, update, or other pending request made before 1 February 2022 will need to be confirmed as received with or resubmitted to our new frequency coordinator. See the ARC Officers page for contact information.

Step By Step Coordination

To avoid confusion and wasting time and money, you should follow these simple steps when investigating the availability or requesting frequencies for your repeater:


The first step, even before purchasing any equipment, including radios, repeaters, crystals, or duplexers, is to complete the Application for Proposed Frequency Coordination and send it to the ARC Frequency Coordinator. You may submit the Application via United States Postal Service (USPS) or as a signed-then-scanned PDF via email.

All Frequency Coordination applications that are mailed to the FC via United States Postal Service (USPS) should be sent with a SASE (Self Addressed Stamped Envelope) for return mailing the applicant.

The ARC Frequency Coordinator can help fill in a few parameters using software tools to calculate such things as HAAT (from your supplied coordinates) and ERP from your supplied TX power, gains, and losses, but the form must be completed in its entirety. Ask for help if you need it; do not guess, as this will delay the process. These two links may be of assistance:
FCC website: Convert Latitude/Longitude to Degrees, Minutes, Seconds and Decimal Degrees
Earthpoint website: Convert Latitude/Longitude to Degrees, Minutes, Seconds and Decimal Degrees

Be aware that the person listed as "applicant" becomes the "Holder of Record" (HOR), and the ARC will only accept future updates from this person. For club oriented repeaters, we recommend that the club itself be listed as "applicant" (Holder of Record), while an individual is listed as the Trustee and becomes the Point of Contact (POC) for the ARC. That way, there is no doubt the pair belongs to the club as opposed to an individual, and updates can be more easily accomplished.

Once the Frequency Coordinator receives the completed application for Proposed Frequency Coordination, he will perform a frequency evaluation, and search to advise of any frequency conflicts (or other available frequencies) as well as initiate contact with the applicant to resolve any issues.

In any case, the applicant must provide all required information requested on the application. The proposed frequency can be included in the application; however, frequency availability varies with geographical location and frequency band. It is also acceptable to leave the TX and RX frequency blank. In this scenario, the Frequency Coordinator will conduct a scan, inform the applicant of the availability of frequencies, and then wait on the HOPC and NFC processes outlined below.


The Frequency Coordinator will perform a search for the applicant and indicate available frequencies from which to choose. Be aware that both 2m and 70cm pairs are scarce throughout the state, and in some areas, there are not any available at all. Also, be aware that in some cases, a frequency availability list is preliminary in that while the Alabama data is up to date, data from neighboring states could be outdated or nonexistent. You are not guaranteed any frequency pair until the NOPC process (see below) is complete, so don't rush out and buy that new repeater, tune the duplexer, etcetera just yet!


Once the Frequency Coordinator has the completed application, it is entered into the ARC database as a "proposed repeater" and a Notice of Proposed Coordination (NOPC) is generated and submitted to all neighboring states within 150 miles from the proposed site. The Frequency Coordinator will try to include the applicant on email communications at this stage to keep them informed during the process.


When favorable responses are received from all neighboring states (be patient: this can take 3 to 4 weeks in some cases), the Frequency Coordinator has some additional paperwork filing to complete, and then a Notice of Frequency Coordination (NFC) is created and sent to the applicant. This may be mailed via USPS or returned via PDF form in an email attachment. This document contains important information regarding conditions under which a repeater must be re-coordinated. You must sign and return one copy of the NFC via USPS or scanned PDF as an email attachment to the Frequency Coordinator indicating two things before your coordination is complete:

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