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, then Assistant Chief Engineer of the

Westinghouse Electric & Manufacturing Company, set up, in his own

garage in Wilkinsburg, Pennsylvania, 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, the first regular commercial broadcasting station in the

world, 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, a 35 year old engineer, obtained the first licence

granted in Europe for the transmission of music and speech for general

reception, 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, Essex, when a 15kW transmitter of the Marconi Company

began regular transmissions in February of 1920.

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

Marconi, German Telefunken, 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,

which would require the use of hundreds of kilowatts of power and

receivers as large as a trunk, not to speak of antennas more than a

mile long. Dr. Frank Conrad, who was also present at the conference,

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, 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, 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,

"Work outside the studio is often the most difficult that the

broadcast engineer can be asked to undertake; 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, set up his

amplifiers in most awkward positions, test his lines to the studio,

decide on his microphone placings and run out the wiring in the space

of an hour or so, with little previous experience to guide him. It is

in fairly echoey halls, theatres and churches that the majority of

outside broadcasts take place. For example, 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, the microphone would

have to be, say, not more than ten feet from the speaker. In

broadcasting a play from a theatre, when the speakers are moving

about, the only way of dealing with the problem is to use several

microphones and a mixing device which enables the engineer to change

silently from one microphone to another, 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, 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, however, does not give either good or even intelligible

quality of speech if it is longer than a couple of hundred miles, 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, and thanks to the co-operation of the Post Office engineers,

it is possible to pick up a programme wherever it may take place

within the British Isles and radiate it simultaneously from all

distribution centres.

"Looking ahead still further and assuming that the wireless will

supplement the wire line link, there is no reason why a simultaneous

broadcast of something of fundamental importance to the whole

civilised world should not take place some time in the future."

In a book entitled "Radio Goes to War" published by Faber & Faber

in 1943, Charles J. Rolo wrote,

"Radio went to war on five continents shortly after the Nazi

Party came to power in Germany. In nine years it has been streamlined

from a crude propaganda bludgeon into the most powerful single

instrument of political warfare the world has ever known. Spreading

with the speed of light, it carries the human voice seven times round

the globe in one second. When Hitler makes a speech in the Kroll

Opera House in Berlin, listeners in America and the whole world hear

his words by short wave even before his own immediate audience hears

them. Radio speaks in all tongues to all classes. All pervasive, it

penetrates beyond national frontiers, spans the walls of censorship

that bar the way to the written word, and seeps through the fine net

of the Gestapo. It reaches the illiterate and the informed, the young

and the old, the civilian and the soldier in the front line, the

policy makers and the inarticulate masses. So great is the importance

of radio to-day that the seizure of a defeated nation's transmitters

has become one of the primary spoils of war."

In Greece, broadcasting was started in the northern city of

Thessaloniki (Salonica) by the pioneer of Balkan broadcasting Christos

Tsingeridis, in 1928. A museum in that city tells the full story of

the first broadcasting station in the whole of the Balkans.

Broadcasting in the capital, Athens, started on March 25th 1938

when a second-hand 15 kW Telefunken transmitter was put into operation

in the suburb of Liosia. The centre-fed T antenna was supported

between two pylons of 85 metres (279 feet). In 1944 when the German

army was pulling out of Athens they tried to blow the the pylons up

but one of them remained standing at a crazy angle, because one of the

explosive charges had been placed incorrectly.

The Dawn of Amateur Radio in the U.K. and Greece: A Personal View · 第 56 / 60 题