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the dawn of amateur radio in the u[1].k.(辺咄字鴨侘議貴伏)-及29嫗

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historic   communique   announcing   the   victory   at Alamein�察  �which   marked 

the turning point of the war in the Middle East。 



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                           CHAPTER NINE 



                                       MISCELLANY 

     1。 The first broadcasting stations of the world。 

       Speech was first transmitted for reception by the general public from 

Washington D。C。 in 1915 when Europe was still at war。 During 1916 the 

first `broadcasting' station in the world began regular transmissions from a 

New York suburb。 

       In  1919    Dr。  Frank    Conrad�察   �then   Assistant    Chief   Engineer    of   the 

Westinghouse   Electric   &   Manufacturing   Company�察  �set   up�察  �in   his   own 

garage   in   Wilkinsburg�察  �Pennsylvania�察  �a   75´watt   transmitter   ��8XK��   from 

which he broadcast musical entertainment for other radio enthusiasts。 This 

was      the   first   continued     scheduled      broadcasting       in   history。    The 

Westinghouse Company realised the potential value of Conrad's work and 

built KDKA�察�the first regular commercial broadcasting station in the world�察�

which   began   its   career   by   announcing   the   results   of   the   Harding´Cox 

election returns on the November 2nd 1920。 

       The   first   broadcasting   station   in   Europe   was   PCGG   which   began 

transmitting   on   November   6th   1919   from   the   Hague   in   Holland。   Hanso 

Steringa Idzerda�察�a 35 year old engineer�察�obtained the first licence granted 

in Europe for the transmission of music and speech for general reception�察�

as opposed to the wireless   telegraphy stations which had been   operating 

point    to  point   services。    From    the   end   of  1919    to  1924    this  station 

transmitted a series of musical programmes three times a week called `The 

Hague      Concerts'。    The    original   wavelength      of   670   metres    was    later 

changed to 1��150 metres。 

       At that time most of the people who heard these concerts would have 

been using headphones and they would not have been very critical about 

the   quality   of   the   sounds   they   were   hearing   compared   to   the   magical 

novelty   of   snatching   voices   and   music   apparently   out   of   thin   air。   This 

historic    transmitter    can   be  seen   in   the  museum      of  the   Dutch    Postal 

Services in the Hague。 

       The first transmissions  of speech   and   music in   England   were   made 

from     Chelmsford�察     �Essex�察   �when    a   15kW     transmitter    of  the   Marconi 



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Company began regular transmissions in February of 1920。 

       In the summer of 1924 the world's greatest radio companies ´ British 

Marconi�察  �German   Telefunken�察  �French   Radio   Telegraphie   and   American 

R。C。A。   ´    met   in   London   to   discuss   transatlantic   communications。   The 

learned gentlemen all   agreed that the Atlantic   could only  be spanned   by 

ultra´long waves of 10��000 to 20��000 metres�察�which would require the use 

of hundreds of kilowatts of power and receivers as large as a trunk�察�not to 

speak of antennas more than a mile long。 Dr。 Frank Conrad�察�who was also 

present     at  the  conference�察    �had   brought    with   him    a  small   short   wave 

receiver less than a foot square。 When he connected it to a curtain rod as 

an antenna the faint but clear voices of his assistants in the U。S。A。 were 

heard     from    nearly   four    thousand     miles   away。    With    this   spectacular 

demonstration he administered the deathblow to all plans for high power 

ultra´long´wavelength         transmitters�察   �and    from   then    on  the   commercial 

companies        concentrated      their   efforts   on    developing      equipment      for 

international communications on the short waves。 

       With present´day electronic news gathering and world´wide satellite 

links�察  �the   problems   faced   by   broadcasting   organisations   fifty   years   ago 

when transmitting   programmes   which   did not   originate   in   a   studio   were 

thought to be very complex。 In the B。B。C。 Handbook for 1928 there was 

an article entitled `Outside Broadcast Problems' which said�察�

       ;Work outside the studio is often the most difficult that the broadcast 

engineer can be asked to undertake�察�not so much from a technical as from 

a practical point of view。 Very often he has to take his apparatus to some 

place   he   has   never   seen   before�察  �set   up   his   amplifiers   in   most   awkward 

positions�察�test his   lines to the  studio�察�decide on his microphone  placings 

and run out the wiring in the space of an hour or so�察�with little previous 

experience to guide him。 It is in fairly echoey halls�察�theatres and churches 

that the majority of outside broadcasts take place。 For example�察�a sermon 

preached   in   a  church   would   be   intelligible   probably  to   the  whole   of   the 

congregation。       But    to   render    it  intelligibly    on   a   loud´speaker�察     �the 

microphone would have to be�察�say�察�not more than ten feet from the speaker。 

In broadcasting a play from a theatre�察�when the speakers are moving about�察�

the only way of dealing with the problem is to use several microphones 



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and a mixing device which enables the engineer to change silently from 

one   microphone   to   another�察  �or   to   combine   them   in   varying   proportions。 

Some rapid switching may sometimes be necessary。 

       ;Even with good microphones and amplifiers the engineer in the field 

may   often   experience   difficulties   with   the   lines   connecting   the   outside 

point to the studio。 The majority of such lines do not transmit the higher 

frequencies adequately�察�especially the longer ones。 The problems become 

immense        when      European       simultaneous       broadcasts      are   attempted。 

Experiments   on   the   continental   wireless   link   have   done   no   more   than 

reveal   its   unreliability。   The   undersea   telephone   line�察  �however�察  �does   not 

give either good or even intelligible quality of speech if it is longer than a 

couple of hundred miles�察�and it is quite unusable for the transmission of a 

musical programme。 

       ;The B。B。C。 has been the first in the world to exploit Simultaneous 

Broadcasting to its fullest advantage for a national system�察�and thanks to 

the co´operation   of the   Post Office   engineers�察�it   is possible to pick up   a 

programme wherever it may take place w
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