Safar (Societa Anonima Fabricazione Aparecchi Radiofonici),
under the direction of Arturo Castellani, built this studio and
transmitter in Rome, Italy, in 1939. The transmitter was located on top
of Mount Mario, making the transmitter antenna about 500 feet above the
average terrain of Rome. The audio carrier was at 41.0 mHz, and the video
was at 44.1 mHz, with a peak visual power of 5 kw.
Directional transmitter antenna
Transmitter anode voltage regulator and rotary
converter for tube filaments
Transmitter
Transmitter with cover plates removed
Control desk - front view
Control desk - rear view
Synchronizing apparatus and camera controls
Mockup studio at the XI National Exhibition of Radio
Inner hall of mockup studio
Entrance hall of mockup studio
The cameras used in this studio used the Telepantoscope, an unusual
camera tube with electronic horizontal scanning and mechanical vertical
scanning.
This 1939 article in Radio & Television shows a
different studio, and a German Fernseh camera, but the same
transmitting antenna.
Milan - Transmissions from Littoria Park
Experimental TV transmissions were made in 1939-40 from Littoria Park in Milan during the XI Mostra
Nazionale della Radio (9th National Radio Show).
Here is an English translation, courtesy of Louis-Marie Foratier:
RADIOVISION IN MILAN
To mark the 11th National Radio Fair, 'EIAR' [Ente Italiano Audizioni Radiofonici, aka Italian Radio Hearings Agency] performs experimental radiovision transmissions from Littoria Tower [now Branca Tower] in Milan's North Park.
For research purposes during recent months, 'EIAR' had already installed at the top of Littoria Tower an ultra-short-wave radio transmitter that regularly aired sound broadcasts. This transmitter is now used to broadcast vision's synchronous sound.
Recently was installed at the top of the tower again, and adjacent to the first one, a second transmitter itself able to transmit pictures.
By means of a special coaxial cable, it is connected to the output equipment installed in a room at the base of Littoria Tower. All scanning and live transmitted shooting scenes equipment - and apparently the ultra-short wave transmitter - have been built in Italy by the Marelli magnets company.
In an adjoining room has been set up a studio where scenes take place that are transmitted with an orchestral accompaniment. There is also the electronic camera (Iconoscope) to capture these scenes, served by a major lighting equipment.
The technical specifications adopted for Milanese radiovision broadcasts are the same as those adopted for radiovision transmissions that are regularly aired since last July in Rome, except for transmitters wavelengths that are 6.70 m (45 MHz) for vision and 7.22 m (41.5 MHz) for sound respectively. The peak power for transmitters is approximately 2 kW.
A pioneering antenna system used for vision like for sound [consists in] two groups of three low impedance half-dipoles, connected in parallel.
Installing the transmitters at the top of the tower considerably shortens the transmission lines leading to the antenna system, reducing the losses to a minimum and thus achieving high performance with this complex technique.
It is estimated that Milanese radiovision broadcasts can be received within a radius of fifty kilometers.
We are publishing here some photographs of artists who performed during a few days on Milan radiovision screens.
[caption 1]:
Littoria Tower of Milan from where are aired the experimental radiovision broadcasts.
[caption 2]:
[Nunzio] Filogama, [Fausto] Tommei and [Giancarla] Bizzoni
[caption 3]:
Maria Valesco
[caption 4]:
Alberto Rabagliati
[caption 5]:
Lina Termini
(Translated from Italian and supplemented by Louis-Marie Foratier)
Here is an interesting picture that can be found here: http://www.trio-lescano.it/partecipazioni.html. It shows the 441 line German camera used from 1939 to 1943 in Milan. Caption says "Maria Jottini in front of the experimental studio's TV-camera in North Park's Tower in Milan". The rest of the page is only devoted to the Lescano singing sisters trio and other artists who were invited to 'radiovisione' programs and to other music-hall performances in theatres and on the radio.
