The Free On-line Dictionary of Computing (19 January 2023):

RFE

   1. Request For Enhancement (compare RFC).

   2. (From "Radio Free Europe", Bellcore and Sun) Radio Free
   Ethernet.

   A system originated by Peter Langston for broadcasting audio
   among Sun SPARCstations over the Ethernet.

   [Jargon File]

   (1994-12-06)


The Jargon File (version 4.4.7, 29 Dec 2003):

RFE
 /R·F·E/, n.

    1. [techspeak] Request For Enhancement (compare RFC).

    2. [from ‘Radio Free Europe’, Bellcore and Sun] Radio Free Ethernet, a
    system (originated by Peter Langston) for broadcasting audio among Sun
    SPARCstations over the ethernet.