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The memorandum B contains a summary of the conditions applicable to experiments in transmission as well as reception. Persons who desire such authority are required to furnish the particulars indicated on the enclosed form of application; and in this case the letter of authority (Form D) indicates the
Power and wave lengths in excess conditions to be observed.
of 10 watts and 10 metres may be allowed in special cases. The call signals ure taken from a series consisting of the fi 2 followed by two letters of the alphabet.
It will be seen from paragraph 2 of form A and pura raph 9 of Form D that the apparatus cannot be used for other then purely experimental purposes.
When desired, however, special permission is given to make use of time signals and weather reports received by means of th
installation.
I am,
Sir,
Your obedient Servant,
Mardh
For the Scenetr
A
Experiments in Wireless Telegraphy.
N.B. Under the Tireless TelegraphyAct, 1901, the Postmaster
Generals authority is necessary before any apparatus for wireless telegraphy is installed or worked.
Authority for the use of Receiving Apparatus.
Conditions of issue, etc.
J
Formal licences to conduct experiments in wireless telegraphy cannot at present be granted; but, pending the
settlement of certain outstanding questions, the Postmaster
General is prepared to authorise the use of wizele se apparatus
for the reception of signals on the following conditions:-
(1) The applicant shall produce evidence of his British
rationality and two written references. (A certificate of birth
should be furnished if possibic; but this will not be insisted
Upon if the two referees testify of their own knowledge that the
applicant is of British nationality. The references should be
given by persons of standing, who are Eritish subjects and not related to the applicant).
(2) There shall be no divulgence to any person (other than properly authorised officials of His Fajesty's Government or a competent legal tribunal) or any use whatever nede of any message received by means of the apparatus;
(3) The installation shall be subject to the approval
of the Postmaster General;
(4) The aerial shall not execed the undermentioned maxinn height and dimensions:-
Extreme height of aerial above ground
} 100 feet.
Total length of wire) including leading-in) 1sadirg-in)
wires.
100 feet for single wire aerial. 10 feet of wire where two or more wireare used (5.g. total length of 70 fest of double vize).
(5) Valvos shall not be used without the special authority
(see over)