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
George: "Yes, all the contacts were on CW. On several occasions we
tried SSB but there was so much distortion that not a single word
could be identified. TEP has a lot of flutter and fading and as you
can hear on the tapes even the morse comes through like a breathing
noise, not a clear tone. This applies to contacts between Greece and
South Africa. Contacts between Japan and Australia where the
distances involved are smaller, have been made on SSB."
Norman: "What about cycle 22?"
George: "see how things go. If anything is achieved it should be in
1990 or later. With modern equipment we shall be able to hear signals
that were buried in the noise in 1979."
4. Dr Spyros Tsaltas SV1AT & George Delikaris SV1AM. (Mobile).
The first two licensed amateurs to make contact on 2 metres in
Greece were Dr Spyros Tsaltas SV1AT and George Delikaris SV1AM. They
had put together the famous Heathkit 'TWOER'. Crystals were plentiful
on the surplus market, but it was not easy to find two of the same
frequency. SV1AT transmitted on 144.720 and SV1AM on 145.135 MHz. The
first contact took place at 13.30 local time on the 21st of December
1963.
A few days later SV1AT had a cross-band QSO with George
Vernardakis SV1AB who was transmitting in the 20 metre band on 14.250
MHz A.M. as he had not completed his TWOER yet.
At that time SV1AT was the Secretary of the Radio Amateur
Association of Greece. He suggested to the Committee that the Club
should apply for a temporary licence to be granted to SV1AM enabling
him to transmit from his vehicle while in motion. The licensing
authority gave the licence "for experimental purposes only, and for a
period not exceeding one month".
And so it was that the first 'mobile' QSO took place on 2 metres
between licensed Greek amateurs on the 27th of January 1965 at 19.25
local time. SV1AM was travelling in his car and SV1AT was at his home
QTH.
5. Costas Tzezairlidis SV4CG. (SSTV).
In 1970 Costas Tzezairlidis SV4CG built a unique electro
mechanical machine using two motors to achieve horizontal and vertical
scanning. He had found a motor which rotated at 960 R.P.M. which
corresponds to 16 revolutions per second, the exact speed required for
the horizontal scanning. The speed of the second motor was 1
revolution per second. The reciprocal motion was produced by a cam
through an 8:1 reduction gear. A weight attached to the microscope
pulled it back to start the next line. The microscope was focussed
sharply on the drum carrying the picture to be transmitted. Resolution
was excellent.
The 'microscope' consisted of a cardboard tube with a 13 cm focal
length lens at one end and a Philips OAP12 photo-diode at the other
with another lens in front of it. This primitive microscope produced
a picture of reasonable quality.
Public-domain text, read in full here on John Shaqi.
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