any Government, coast, or ship station is found to result; the Minister
may further order the confiscation or dismantling of the licensed apparatus
in cases where, in his opinion, such action is warranted.

21. A license shall not be granted for any radio station the operation
    of which, in the judgment of the Minister, is likely unduly to interfere with
    the operation of any Government, coast, or ship station, or for any radio
    station the erection and operation of which would, in the judgment of the
    Minister, be inimical to the public interest.

22. The applicant for a license for a radio station or for an operator's
    certificate shall be a British subject.

23. The applicant for a license or for an operator's certificate shall have
    attained the age of fourteen years.

FEES AND CHARGES.

24. The annual fees to be paid in respect of licenses issued by the
    Minister for the installation and operation of any class of radio station
    shall be as follows:

(1.) An amateur station for reception only (including reception
from broadcasting stations)

(2.) An amateur transmitting and receiving station, Grade II

(3.) An amateur transmitting and receiving station, Grade I

(4.) An experimental transmitting and receiving station

(5.) A private broadcasting station

(6.) A toll broadcasting station

25. The fees to be paid in respect of examinations for an amateur
    operator's certificate shall be as follows for each examination or re-examination:

(1.) Amateur Operator, Grade I

(2.) Amateur Operator, Grade II

26. The fee to be paid in respect of a duplicate of an amateur operator's
    certificate or of a radio station license shall be 5s.

27. Where payment of the above-mentioned fees is not made on the
    due date the Minister shall not issue the said license or certificate, or, if
    issued, shall suspend or revoke the same as he may deem proper; provided
    that in the case of a recognized educational institution carrying out
    research work calculated to benefit the science of radio telegraphy, the
    Minister may at his discretion remit the annual license fee.

CLASSIFICATION OF TRANSMITTED WAVES.

28. For the purpose of these regulations the various types of emissions
    are classified as under:

(TYPE A1.)—Continuous waves, key modulated; meaning continuous
waves of which the amplitude or frequency is varied by the operation of
keying as in telegraph transmission.

(TYPE A2.)—Continuous waves, modulated at audio frequency; meaning
continuous waves in which the amplitude or frequency is varied in a periodic
manner at an audible frequency, and commonly referred to as I.C.W.

(TYPE A3.)—Continuous waves, modulated by speech; meaning continuous
waves in which the amplitude or frequency is varied according to
the characteristic vibrations of speech.

(TYPE B.)—Damped waves; this includes waves from spark transmitters
or other types of transmitters having a characteristic decrement similar to
spark transmitters.

DAMPED WAVES (TYPE B).

29. The use of damped waves is prohibited except for research work
    on approved lines and subject to special written consent.

CALL SIGNAL.

30. Every radio station licensed hereunder to transmit radio communications
    shall, for purposes of identification, be allocated an official call
    signal, by which the station shall be identified, and which is to be used in
    the manner hereinafter given whenever a radio communication is caused
    to be transmitted from the said radio station.

31. For the transmission of any radio communication to any other
    licensed radio station the procedure governing communications between
    ship stations and ship stations, or ship stations and coast stations, and
    outlined in Article 25, Sections 1 and 2, of the Detailed Service Regulations
    appended to the Radio Telegraph Convention, 1912, shall apply.

32. Where the transmissions are of an experimental character and not
    addressed to any specific station, the call signal shall be sent thrice both
    at the commencement and at the close of each radio communication or
    connected series of radio communications.