The Studios were organized by the Public Power Corporation (ΔΕΗ) pavilion, supplied by Philips, along with other locally improvised equipment.
After the restoration of the Republic in 1974, the Hellenic Broadcasting Corporation continue to dominate, appealing to a much larger audience than YENED.
Color television broadcasts began in the late 1970s and notable people were placed to improve the quality of the national channels, such as Dimitris Horn, Manos Hatzidakis and the Nobel laureate poet Odysseas Elytis.
Broadcasts originally lasted for seven to eight hours daily starting at about 5:30PM with children shows and then the first televised news of the day.
Some illegal broadcasts made short-lived appearances during the 1980s showing mainly movies of adult nature but, in 1987, the City of Thessaloniki began rebroadcasting in a television frequency parts of European satellite channels, leading to a dispute between the government and the city, as the station's equipment was confiscated numerous times.
The more serious challenge to ERT's monopoly, however, appeared with the establishment and operation of TV Plus in the Piraeus area, which began broadcasting major American films to the starved-for-diversity people of Athens.
It is then that ERT decided to preempt the challenge to its monopoly and any further attempts to put private broadcasts on the air, by re-broadcasting itself foreign satellite channels.
TV Plus, was owned by Invest Plus SA, a US group headed by Daniel Bourla, with the participation of the Municipality of Piraeus, and its programming was quite innovative for Greek standards at the time, as it broadcast first-run Hollywood feature films with subtitles and no commercials.
Mega and Antenna featured similar programming styles, with locally produced comedies and dramas, numerous variety shows (following in the Italian tradition), American films, and tabloid news broadcasts.
By early 1990, numerous other stations also appeared on the air, including New Channel (no relation to Nea Tileorasi) with movies, music videos and talk shows, Channel Seven-X (with avant-garde programming including foreign films, intellectual programming and a simulcast of French music TV network MCM), Jeronimo Groovy TV (initially a popular music video station that broadcast in Athens, amidst serious interference from other stations), TeleCity (a right-wing political station with news and talk shows), 902 TV (owned by the Communist Party of Greece), Kanali 29 (a television station with political and cultural programs and a cult following), and a plethora of other broadcasters, which filled every available VHF and UHF frequency, often broadcasting only for several weeks or months, or with very little programming of note.
Also in 1993, Kanali 29's management was handed over to Niko Mastorakis, who was once again involved in Greek media after a long stint as a movie producer and director in the United States.
Kanali 29 was renamed Star Channel, and featured programming rich in American films and TV series, and talk and lifestyle programmes.
The following year, ERT decommissioned many of its terrestrial satellite broadcasts, and reassigned many of those now-vacant frequencies to Multichoice Hellas, for terrestrial pay services a year after TV Plus went off the air following a dispute with Time Warner that had acquired a 25% interest in the company.
By the late 1990s, Greece began to see its first major mergers and acquisitions (some of them ill-fated) in the realm of broadcast media.
Seven never quite achieved the success of some of the other stations, as it continued to face financial difficulties even after the sale, and never was able to broadcast outside of certain large cities in the country.
New Channel, which broadcast in many major cities but did not offer much original programming, was sold to a new investor and renamed "New Tempo" and finally "Tempo TV", building up a national network of repeaters in an effort to become a major player in the television market, which it partially succeeded in, before financial troubles led to its failure in 2001.
Mad TV featured programming heavy on hit music clips, similar to MTV and its Greek predecessor Jeronimo Groovy TV (which continued to exist but with a small coverage area and with programming more heavily dependent on talk); both channels, in opposition to TVC, operated in a few-hour rotation.
TV 0-6 began broadcasting in Athens, with many cartoons and children's shows, while TV Magic, after an ill-fated attempt to become a news-talk station owned by Sokratis Kokkalis, became a station focusing on sports and particularly of Greek sports club Olympiacos, which Kokkalis also owned.
Plans for a satellite bouquet managed by OTE (the Greek telecommunications company) never went past the test phase, with OTE leasing frequencies on the Hot Bird satellite, rebroadcasting several smaller Greek TV stations as well as many radio stations free-to-air.
Other notable stations that have begun operating in recent years include Channel 10, while TeleCity was renamed Tileasty.
To this day, the Greek government still has not issued official licenses to most television stations in Greece, which are currently broadcasting in a quasi-legal state.
Tenders have been offered for national, regional and local broadcasters as well as terrestrial pay-TV services, which have either been frozen or have failed completely.
Except for the high number of reruns, networks started airing a lot of foreign programs, the majority of them being Turkish dramas.
After four years, the network once again sold, this time to Ivan Savides' company Dimera Media Investments Limited.
[7] Since early 2016, most Panhellenic networks began pilot high definition transmissions to a limited number of cities.
In September 2009, the seven major television stations in Greece started broadcasting in DVB-T MPEG-4, via a company set up by them, Digea.
In 2009, Greek Telecommunications giant OTE launched IPTV service called Conn-x TV which was initially available in Athens, Thessaloniki, Patras, Larisa and Iraklion.