4.—(1) The apparatus must comply with the GSM standard EN 301 511 published by ETSI(1) (or equivalent specification).
(2) The apparatus must only operate in the frequency bands 1710-1785 MHz and 1805-1880 MHz.
(3) The apparatus must only be used—
(a)for mobile communication services on aircraft;
(b)when the aircraft is three thousand metres or more above the ground;
(c)where the aircraft BTS limits the transmission power of all apparatus to a nominal value of 0 dBm at all stages of communication, including initial access; and
(d)where the e.i.r.p. outside the aircraft emanating from the apparatus transmitting at 0 dBm does not, at each of the heights above ground specified in Column 1 of Table 1 of the Schedule, exceed the value specified in Column 2 of that Table.
(4) The apparatus must not cause or contribute to undue interference to any wireless telegraphy.
(5) The apparatus must connect directly to a relevant network in which—
(a)the network control unit prevents the apparatus, when operating on one of the frequency bands listed in Column 1 of Table 2 of the Schedule, from registering on that band with the types of system on the ground which are listed adjacent to that band in Column 2 of that Table;
(b)the network control unit and the aircraft BTS operate such that their total e.i.r.p. outside the aircraft does not, at each height above ground specified in Column 1 of Table 3 of the Schedule, and at each of the frequency bands specified in the heading of Columns 2 to 5 of that Table, exceed the value specified in Columns 2 to 5 of that Table;
(c)the aircraft BTS complies with the GSM standards EN 301 502(2) and EN 302 480(3) published by ETSI (or equivalent specifications); and
(d)the network control unit complies with the GSM standard EN 302 480 published by ETSI (or equivalent specification).
EN 301 511 (Version 9.0.2) was published on 20th March 2003
EN 301 502 (Version 8.1.2) was published on 17th July 2001
EN 302 480 (Version 1.1.2) was published on 24th April 2008