ARLA/CLUSTER: Nova Zelândia informa a IARU R3 dos modos digitais implementados no pais

[João Costa > CT1FBF]

Digital Modes Development in New Zealand

The NZART have submitted a paper by Murray Greenman ZL1BPU to the IARU
Region 3 Conference which takes place Oct. 12-16

This paper reports on current digital mode practice, and on the
development of new digital modes and techniques in New Zealand over
the last three years.  Digital radio techniques offer new levels of
performance in Amateur Radio, and provide solutions to significant
technical challenges. One of these has been the provision of reliable
text communication under NVIS propagation conditions, until now a
serious barrier to effective emergency communication in remote
locations.

Recent developments have seen the line between transceiver hardware
and computer software blurred by the entry of significant digital
signal processing. This combination of new technology provides an
attractive way of recruiting new people (with a computer interest) to
the hobby, and retaining the attention of technically capable
amateurs, through interesting new projects.

In the last decade the trend in digital mode development has been
towards more complex modulation, accompanied by ever more complex
error correction coding, in attempts to solve the technical problems.
However, one local team has reversed this trend, and has achieved high
performance with very simple but carefully chosen techniques, with
attendant advantages of simplicity of use and slick operation.

Read the paper at
http://www.iaru-r3.org/16r3c/docs/043%20Digital%20Modes.docx

Other papers for the conference are at
http://iaru-r3.org/16th-triennial-conference-of-the-iaru-r3-documents/

16th IARU R3 Conference
http://www.iarur3conf2015.org/