Relay Station 102-A was a Federation communication relay station that was in service with Starfleet in the mid-24th century.
In 2369, this station was named on the chart "Sector Ipai Relay Log – Relay Message Flow 1293" in Relay Station 47 Ops. The USS Hood sent a message to this station via encoded epsilon. (TNG: "Aquiel", "Descent" production art)
This station was only mentioned in writing.