Telecommunication.
11. Inspection.-The station shall be subject to the approval of the Postmaster General and together with the record of transmissions and this licence shall be open to inspection at all reasonable times by duly authorized officers of the Post Office who will produce their cards of identity on request.
12. Non-interference.-The station shall be used in such a manner as not to cause interference with other stations outside the authorized bands. Sending shall at once be discontinued or postponed at the request of any Government or commercial station.
When telegraphy is being used the arrangement employed for "keying" the sender must be such as to reduce to a minimum the risk of interference due to key clicks being produced in neighbouring apparatus. Whenever, for any reason, the carrier wave of the sender is being modulated by any system of modulation, care must be taken to avoid over-modulation. Particular care must be taken to avoid unwanted frequency modulation of the carrier frequency. At all times every precaution shall be taken to prevent the radiation of energy at frequencies other than those which are necessary for the type of emission in use.
13. Aerial.-If the station is situated within half a mile of the boundary of any aerodrome, the height of the aerial above the ground level shall not exceed 50 feet. An aerial which crosses above or is liable to fall upon or to be blown on to any overhead power wire (including electric lighting and tramway wires) or power apparatus must be guarded to the reasonable satisfaction of the owner of the power wire or power apparatus concerned. No aerial shall be erected in such a way as that in falling or being lowered it shall occupy or traverse a public thoroughfare.
14. Control in Emergency.—(a) If and whenever in the opinion of the Postmaster General an emergency shall have arisen in which it is expedient for the public service that the Hong Kong Government shall have control over the sending and receipt of messages by means of the station it shall be lawful for the Postmaster General to direct and cause the station to be taken possession of in the name and on behalf of the Government and to prevent the licensee from using it and for these purposes or either of them to cause any part of or all the apparatus forming the station to be removed to such place as he may think fit and any person authorized by the Postmaster General may from time to time enter the premises at which the station is maintained for any such purposes as aforesaid.
(b) The licensee shall not be entitled to any compensation in respect of the exercise by the Postmaster General of the power conferred by this condition which shall remain in force notwithstanding the withdrawal or modification of the licence.
NOTES-1. Use of Supply Mains.-If power for the working of the wireless station is taken from a public electricity supply no direct connexion shall be made between the supply mains and the aerial.
2. Broadcast Reception. This licence does not authorize the reception of broadcast programmes for entertainment purposes. For the reception of broadcast programmes for entertainment a separate broadcast receiving licence is necessary.
3. Copyright. This licence does not authorize the licensee to do any act which is an infringement of any copyright which may exist in the matter transmitted.
4. Return of Licence.-When this licence is cancelled or superseded by a new licence it must be returned to the address given at the foot of page 1, together with any letters authorizing additions or alterations to the terms of the licence.
5. Payment of Renewal Fee.-The fee should be forwarded on the due date to the Radio Licensing and Inspection Branch, General Post Office, Hong Kong, quoting the reference given at the foot of page 1. It is unnecessary to forward the licence when the renewal fee is remitted.
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