From the SSA Web site (posted 2/10/2012)…

“The FAA has assigned transponder code 1202 for use by gliders not in contact with an air traffic control (ATC) facility with an effective date of March 7, 2012.  The notice was published in JO 7110.577, a copy of which is available on the FAA web site here:http://www.faa.gov/documentLibrary/media/Notice/N7110.577.pdf  Gliders operating in areas where there is an agreement with local ATC to use a different code should contact the agreement sponsor for guidance on which code to use.”