See information on the KA1RCI network in Rhode Island

The MMRA operates twenty-one repeaters and one APRS digipeater at thirteen locations in Eastern and Central Massachusetts.
Additionally, there are several non-MMRA "affiliated" repeaters capable of linking into the MMRA network.
Each repeater may link to other repeaters via the RF links as indicated in the above diagram.

The MMRA Operating Guide provides information on how to operate on MMRA repeaters.