The Greek broadcast licensing process came under legal scrutiny as a result, and in 2002, eight of the closed stations reopened.
as the official company to measure audience listening data and ratings for stations in the Athens region.
Most stations broadcast in stereo, but a small (but slowly growing) number uses the Radio Data System.
Temporarily, most, but not all, stations are broadcasting with legal "permission"[clarification needed] from Greek National Council for Radio and Television, until and if new licenses are issued.
A number[vague] of pirate radio enthusiasts use the expanded upper part of the AM band (1600–1710 kHz) for "experimental" transmissions.
In Thessaloniki, and most of the rest of Greece, on MW/AM pirates were playing Greek popular music, and foreign pop and rock on FM.
All the state-run radio stations still broadcast their programs on the MW band, except the Third Programme which gave its frequency (666 kHz) to an ERA Filia (Friendship) which has been suspended since 2013.
Most are from the central-northern part of the country (Thessaly, West, and Central Macedonia) but there are AM radio pirates in Thrace, Crete, Cyclades and Peloponnese as well.
On the AM expanded band (1600–1710) numerous radio pirates transmit experimentally without a regular schedule, or program, mostly Greek popular music along with Q code QSO.
Since January 2018, ERT transmits a DAB+ multiplex on channel 12C (227.360 MHz) from their transmitter site on Mount Ymittos, near Athens.