the dawn of amateur radio in the u[1].k.(收音机雏形的诞生)-第6章
按键盘上方向键 ← 或 → 可快速上下翻页，按键盘上的 Enter 键可回到本书目录页，按键盘上方向键 ↑ 可回到本页顶部！
————未阅读完？加入书签已便下次继续阅读！
progress of the art of radio telegraphy and radio telephony will be greatly
hindered。〃
Professor W。H。Eccles wrote：
〃Improvements and invention must be stimulated to the utmost。 It is
not impossible to devise laws to impose restrictions upon the emission of
wireless waves as will preclude interference with the public radio service
of the future （R。F。I。 & T。V。I。？！！） and yet allow liberal opportunities for the
experimental study of wireless telegraphy。〃
NOTE。 The above passages are taken from WORLD AT THEIR
FINGERTIPS by John Clarricoats； O。B。E。；G6CL； published by the
R。S。G。B。 in 1968。
17
… Page 18…
The dawn of amateur radio in the U。K。 and Greece ： a personal view
CHAPTER FOUR
THE 1921 TRANSATLANTIC TESTS
Most commercial experimental transmissions in wireless telegraphy
before World War I were carried out on the 〃long〃 wavelengths； though
they were not called that at the time。 Transmissions by amateurs in the
United Kingdom and the U。S。A。 on the other hand were made around 200
metres （1。5MHz）。 In the U。S。A。 amateurs were permitted to use a
D。C。input of 1；000 watts to the anode of the final stage of their
transmitters。 In the U。K。 the maximum power allowed was 10 watts and
the combined height and length of the transmitting aerial was not to
exceed 100 feet。 So when the first attempt to span the Atlantic was made
in February of 1921 it was natural that the American stations should do the
transmitting and the Europeans the listening。
About 25 U。S。 amateur stations participated in the tests； which took
place early in the morning on the 2nd； 4th and 6th of February 1921。
Although about 200 European stations had indicated their intention to
listen only 30 actually submitted logs。 And not a single one of them was
able to report hearing anything that could be attributed to the American
transmissions。
The then Editor of QST wrote： 〃We have tested most of the circuits
used by the Britishers and find them one and all decidedly inferior to our
standard American regenerative circuit using variometer tuning in
secondary and tertiary circuits。 We would bet our new Spring hat that if a
good U。S。 amateur with such a set and an Armstrong superheterodyne
could be sent to England； reception of the U。S。 transmissions would
straightaway become commonplace。〃 Strong language。
In September of the same year it was announced that a prominent U。S。
amateur Paul Godley 2ZE would be going to Europe to take part in the
second series of tests planned for December。 His expenses were being paid
by the A。R。R。L。 which already boasted having 15；000 transmitting
members。 In the U。S。A。 distances of over 2；000 miles had already been
achieved。
During his brief stay of a few hours in London Paul Godley was
18
… Page 19…
The dawn of amateur radio in the U。K。 and Greece ： a personal view
introduced to Senator Marconi； to Admiral of the Fleet Sir Henry Jackson；
to Alan A。Campbell Swinton and many other distinguished members of
the Wireless Society of London； as the R。S。G。B。 was then called。
Paul Godley first set up his receiving equipment at Wembley Park；
Middlesex but soon decided that the electrical noises in the area would not
permit reception of the weak transatlantic signals。 He therefore obtained
permission to set up the European receiving station at Ardrossan a coast
town near Glasgow； Scotland。 The actual site was a large field heavily
covered with seaweed。 He was assisted in the erection of his receiving
antenna by a member of the Marconi International Marine
Communications Company。 1；300 feet of phosphor…bronze wire was
stretched 12 feet above the ground on ten poles spaced equally along the
full length of the wire which was earthed at the far end through a non…
inductive resistor。 This was the first Beverage type receiving array ever
erected in the United Kingdom。 Before the actual tests took place the
length of the wire was reduced to 850 feet。
At 00。50 GMT on December 9th 1921 Godley identified signals from
1BCG located at Greenwich； Connecticut。 The station there was manned
by six members of the Radio Club of America。 One of the operators was
E。Howard Armstrong inventor of the regenerative detector； super…
regeneration and the supersonic heterodyne receiver； though the French
claim that the superhet was first designed by Lucien Levy of Paris。
Two days later the historic first complete message transmitted by U。S。
amateurs and received in Europe on the 〃short waves〃 （actually 230
metres） heralded a new era。 The message read：
No。1 de 1BCG。 WORDS 12。 NEW YORK DECEMBER 11 1921。 TO
PAUL GODLEY ARDROSSAN SCOTLAND。 HEARTY
CONGRATULATIONS。 SIGNED BURGHARD INMAN GRINAN
ARMSTRONG AMY CRONKHITE。
Eight British amateurs had also copied the message correctly。 One of
them was W。E。〃Bill〃 Corsham 2UV of Willesden； London who was later
credited by the R。S。G。B。 and the A。R。R。L。 as being the inventor of the
QSL card。 Bill had used a simple three valve receiver and an inverted…L
wire 100 feet long compared to Godley's huge Beverage array。
19
… Page 20…
The dawn of amateur radio in the U。K。 and Greece ： a personal view
In the summer of 1922 amateurs in France began to get licences and
Leon Deloy 8AB President of the Radio Club of Nice in southern France
started hearing British stations。 After a visit to the U。S。A。 Deloy was able
to improve his equipment and on November 27th 1923 he contacted Fred
Schnell 1MO of West Hartford； Connecticut for the first ever 2…way QSO
across the Atlantic。 They used the 〃useless〃 wavelengths around 100
metres。
INTERNATIONAL DX had come to stay。
20
… Page 21…
The dawn of amateur radio in the U。K。 and Greece ： a personal view
CHAPTER FIVE
THE FIRST GREEK RADIO AMATEURS
As no licences were issued for many years there are no official
records to be consulted。 Early activity was mainly in and around Athens
but there may have been one or two stations in other parts of the country
which we never heard in the capital。 At the time of writing （1987） four of
the original pioneers in the Athens area are alive and three of them are
currently active on the H。F。 bands。
Athanassis 'Takis' Coumbias has QSL cards addressed to him dated
1929 when he was a short wave listener in Odessa； Russia with the SWL
callsign RK…1136。 In 1931 his family； like many other Greek families in
Russia； moved to Athens where Takis built a 4…valve transmitter with
which he was very active on 40 and 20 metre CW using the callsign
SV1AAA。
I frequently op
