The Stage 2, which was based on digital technology updates in the regulatory framework, was approved by Anatel Resolution N. 398, on April 7th 200510. This Regulatory document presents technical aspects of sounds and images broadcasting and television retransmission, with the purpose of:
− Ensuring the quality of the signal in the coverage area.
− Preventing harmful interferences over currently authorized, and already installed, telecommunication stations.
− Establishing the technical criteria of viability projects designing, especially those regarding to inclusions in channel allotment plans, and modifications on technical installations.
The revision of the technical regulation for television broadcasting also included the procedure for calculation of viability involving channels of Digital TV11 and the adoption of Recommendation UIT-R P.154612.
2.3.3 Stage 3: Creation of Basic Plan for Digital Channel Distribution (PBTVD)
The Stage 3 startup occurred with the publication of Anatel Resolution 407, on June 10th 200513. This document approved the Brazilian Digital Television Channel Allotment Plan, officially named as Basic Plan for Digital Channel Distribution - PBTVD14, referred to in item 1.2.3, Fig. 33. It also allocated, considering the guidelines discussed on item 1.2.1, 1893 digital television channels in 306 localities. In sum, in 2005, the Basic Plan of Distribution of Television Channels (PBTV) contained a total of 473 generator TV stations (analogue stations), 9845 relay TV stations and 1207 stations in cities where its populations is more than one hundred thousand inhabitants.
2.3.4 Stage 4: Definition of the Digital Terrestrial Television system and the transition period guidelines
The Stage 4 started with the Decree No 5,820, on June 29th 200615, defining that the SBTVD-T would adopt, as a base, the standard of signals designed by ISDB-T (Integrated Services Digital Broadcasting), also incorporating the technological innovations approved by the Development Committee. Beyond those definitions, the document presented the guidelines for the transition period from analogue to digital TV. The Decree also laid down the following points:
− Creation of the SBTVD Forum16;
− Made possible:
− Simultaneous fixed, mobile and portable transmission.
− High Definition (HDTV) and Standard Definition Television (SDTV).
− Defined the consignation of one digital channel for each existing analogue channel, regarding the transition period. The preference is for the digital channel allocation in the UHF band (channels 14 -59), rather than in the VHF band - high (channels 7 - 13).
− Deployment sequence, first starting with the TV stations.
− Established that, after signing the assignment contract, the installation projects must be submitted by the broadcasting companies to the Ministry of Communications within 6 months. Afterwards, the digital transmissions should start within 18 months.
− Defined that, after July 1st 2013, only digital technology television channels will be granted by the Ministry of Communication for television broadcasting.
− Defined the date of June 29th 2016 as the switch-off date of analogue transmission.
Creation of 4 (four) digital public channels for the national Government.
2.3.5 Stage 5: Establishment of conditions for assignment contract of the additional channel for the digital and analogue simultaneous transmission
The Ministry of Communication (MC) ordinance Nº 65217, which has been published on the 10th of October, 2006, initiated Stage 5 by establishing the assignment contract conditions for the additional channel, which shall be used during the digital and analogue simultaneous transmission period (Simulcast). It has also included the schedule for the transition, as defined below:
− The assignment contract will observe the PBTVD.
− The digital channel will have to:
I Provide the same coverage as its analogue counterpart;
According to the plan, migration priority is given to generator TV stations and, later, to the relay stations located in Capitals and the Federal District. The signing of assignment contracts by relay station operators in the remaining cities will take place at the last stage.
After the assignment contract is signed, the TV Broadcaster may start to test and then commercially deploys the system.