MARC Repeater Directory
 Last Update on   11/20/2015 1130 EST



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Repeater Directory access is provided through four indexes:

City     County     Quadrant     Frequency

Go HERE  for more information on
directory entries recorded in
red italics.

How the Repeater Directory can be updated.

A list of commonly used abbreviations.


City Index


A | B | C | D | E | F | G | H | J | K | L | M | N

O | P | Q | R | S | T | U | V | W | X | Y | Z


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County Index



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Frequency Index


29 MHz

50 MHz

144 MHz

222 MHz

420 MHz

902 MHz

1240 MHz

2390 MHz


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Quadrant Index



North of M-46
West of I-75 / US-27 / US-127


North of M-46
East of I-75 / US-27 / US-127


South of M-46
West of I-75 / US-27 / US-127


South of M-46
East of I-75 / US-27 / US-127


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Repeater Directory Abbreviations




System Classification



Open (usually carrier-operated)



Closed system






Shared, non-protected pair



Remote base



Access Tone or Code Requirements



CTCSS encode tone (not specified) required for access



CTCSS encode tone (specified) required for access



CTCSS decode tone (specified) required for access



CTCSS tones (specified) required for access and on output



Digital Coded Squelch code required for access



Specialized Features









Closed autopatch



Emergency power available



Solar power available



Wind power available



Linked system (frequency linked to in parentheses)



Long-Tone Zero equiped



Portable system



RACES affiliated



ARES affiliated



Touch-Tone (R) access specialized features



Weather net or weather usage (and DTMF access sequence, if known)



Wide area coverage



Direct access to law enforcement (and DTMF sequence, if known)


Standard Inputs Unless Otherwise Noted

-500 kHz. for 6 meters
-600 kHz. below 147.00 MHz. for 2 meters
+600 kHz. above 147.00 MHz. for 2 meters
-1.6 MHz. for 220 MHz.
+ 5 MHz. for 440 MHz.


How Repeater Directory Updates Are Made

Updates to the MARC Repeater Directory are made by the organization sponsoring the repeater.

Repeater sponsors designate the individual responsible for communicating updates to MARC (usually the repeater trustee).

Updates are made by submitting an updated TDS / Coordination / Update / Review Form

You can help MARC improve the accuracy of the Repeater Directory.

If information in the repeater directory needs to be updated, please contact the sponsoring organizaton or repeater trustee and ask them to submit an updated TDS form to MARC.

Periodically, MARC will refresh the Repeater Directory with the latest information posted to the MARC repeater data base.

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Delinquent Repeater Directory Entries

Trustees associated with entries appearing in RED ITALICS  need to submit a TDS update for those entries.  These entries are considered to be in a delinquent reporting status.  All repeaters must be updated at least every two (2) years, or face possible loss of coordinated status.

NOTE:  Repeaters with a * preceding the call sign are being prepared for De-Coordination.

Final submissions to the ARRL Directory will only contain current TDS data that is complete and has been processed and approved by MARC.   The only exeption will be repeaters that have a current TDS on file with MARC, that are waiting to be posted to the MARC database due to administrative procedures.   These entries will remain in red italics until their last TDS Date has been updated in the database.

The update reporting deadline for having your repeater(s) listed in the ARRL Repeater Directory is December 31 of each year.  This does not mean you have to update every year.  It means your updates must be current, or less than two years old, in order to be listed in the ARRL Repeater Directory.  Updates received after December 31 may or may not be included in the Repeater Directory the following year.

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