The airspace within the Tallinn FIR between FL 290 and FL 410 (inclusive) is RVSM airspace.
Exemption from the 8.33 kHz channel spacing capable radio equipage requirement is granted for State aircraft operating in airspaces class G or within Tallinn FIR between FL 95 and FL 365
Exemption in airspace G is applied on condition that these flights are equipped with radio operating in the UHF band and able to establish and maintain two-way radio communications with the appropriate ATC unit on UHF frequency (check remark 2 from ENR 2.1).
Note: Tallinn APP is responsible for information and alerting service in uncontrolled airspace (class G) below Tallinn TMA.