The Dawn of Amateur Radio in the U.K. and Greece: A Personal ViewJoly, Norman F.
History
The Dawn of Amateur Radio in the U.K. and Greece: A Personal View
Joly, Norman F.
Radio broadcasting
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.
2. Avlis 'The Voice of Hellas'.
The 5th Programme of the Greek broadcasting service (Elliniki
Radiophonia) is transmitted from the short wave transmitting centre at
Avlis, about 70 kilometres north of Athens. The station was put into
service in 1972 and has two 100KW Marconi short wave transmitters and
a veritable forest of antennas covering 1,100 acres, arranged in three
lines to cover the desired directions, as can be seen on the great
circle map. The pylons supporting the 6 MHz arrays are truly
impressive at 328 feet. Each line has eight separate antennas for the
6, 7, 9, 11, 15, 17 and 21 MHz broadcasting bands.
Each antenna consists of two curtains with a total of 8
horizontal dipoles. The dipoles are all fed by open wire feeders
which can be remotely switched to enable radiation in two directions
180 degrees apart. There are also three curtains for the 11 metre
band (26 MHz) which may be put into service during sunspot cycle 22 if
the M.U.F. allows it.
For transmissions to neighbouring countries like Cyprus, Turkey,
the Balkans and the countries of the Middle East, there are two
rotatable log periodic antennas with a high angle of vertical
radiation (45 degrees) and a wide angle of 32 degrees in the
horizontal plane.
The remotely controlled switching centre allows each of the two
transmitters to be connected to any one of the 23 antennas.
Electromechanical protection circuits ensure that a transmitter can
only be connected to an antenna that is tuned to the same frequency.
The change of antennas and transmitting frequencies is made during the
ten-minute interval between programmes, which always begin on the
hour, preceded by the now familiar signature tune of a shepherd
playing his flute with the tinkling of sheep-bells in the background,
recorded in 1936, followed by the Greek National Anthem.
The special programmes of news and features originate in the
broadcasting headquarters in Athens and go on the air throughout the
24 hours of the day in Greek, English and many foreign languages.
Reports of reception are welcome and should be addressed to K.E.B.A.,
Avlis, Greece. (The Greek initials stand for short wave transmitting
centre.)
Public-domain text, read in full here on John Shaqi.
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