Next Generation Audio provides new user experiences.

NGA came to surface at the right moment for the SRF.

As part of its continuing tests of 5G for media production and distribution, Spain’s RTVE took a portable small-cell network to an open-air theatre for video coverage of a live radio play. Read about what they learned on page 6. 5G also features on page 7, where ARD's Jochen Mezger explains how the technology could make a life-or-death difference during natural disasters in future; and on page 17, Georg Mayer explains how 3GPP is shaping the next phase of the global 5G infrastructure.

This, the 50th issue of tech-i also features a retrospective on the topics covered in the magazine since the first issue appeared in September 2009.

It is commonplace to see mobile phones used to shoot video whilst held in a portrait configuration (long axis vertical), which results in aspect ratios such as 9:16, rather than the conventional 16:9. Nevertheless, the importance of user-generated content to broadcasters has created the need to handle and archive images with non-traditional aspect ratios.

UHF spectrum below 700 MHz is intensively used throughout Europe, both for DTT and for wireless production systems.