You are here: Home / Blog

What is 4G? Do you know?

September 23, 2012 by Leave a Comment

It’s not often that I stray into the broader world of telecommunications, but I was so impressed with this article by Mark Gregory in “The Conversation” that I wanted to share it in its entirety.
For those of you who want a peek behind the ‘4G’ acronym without being sucked into a morass of technical detail, then this is the article to read.

Explainer: what is 4G?

By Mark Gregory, RMIT University

If you’re looking to buy a new smartphone or computer you’ve probably seen advertisements and offers for 4G-compatible devices. You might even own a 4G-compatible device already.

But just what is 4G? How does it compare to existing 3G networks? And what is the current availability of 4G networks in Australia?

[Read more…]

Filed Under: Telecommunications

Loss of the OTS 1 Satellite

September 13, 2012 by 10 Comments
OTS In Orbit - Artist's Impression

The OTS Satellite In Orbit – Artist’s Impression

This is a sorry tale of how four years’ work was destroyed in 54 seconds. Some say that the number thirteen is unlucky and on 13th September 1977, exactly 35 years ago today, this proved to be the case for me and the whole team that developed the OTS satellite. Here’s how things played out.

The European Space Agency’s Orbital Test Satellite (OTS) was one of the very first geostationary, 3-axis-stabilised Ku-Band communications satellites. It was developed as a test bed for a host of new European technologies and transmission techniques aimed at bringing regional TV and trunk telephony services to Europe. It was the forerunner of the highly successful ECS satellites which were subsequently operated and managed by EUTELSAT.

I spent four years working on different aspects of the OTS satellite, the communications transmission design and on the ground segment earth stations. For any interested readers with a technical bent you can check out details on the EXPERIENCE and PUBLICATIONS pages of this site.

In March 1977 I took on the role of designing, planning and implementing the in-orbit testing (IOT) of OTS. This was to be carried out from Telespazio’s Fucino earth station complex in the mountains east of Rome, Italy, and you can check out the Fucino earth station complex with the interactive Google Map on my related blog post [Read more…]

Filed Under: Communication Satellites, Earth Station Locations, Launch Vehicles, Launches, Organisations

50 Years of Satellite Communications

July 27, 2012 by Leave a Comment

It’s not often that I publish two blog posts in quick succession, but this is an exception. Only a couple of weeks ago on July 10th 2012 I posted “The Birth of Satellite Communications” on the anniversary of the launch of Telstar, the world’s first commercial communications satellite.
That blog post was subsequently published in the July 2012 MilsatMagazine article here.

Since then I have come across some other references and resources that I believe are really worth capturing and sharing. First, an excellent 12 minute video produced by the European Space Agency and entitled “50 Years via Satellite”. Below the ESA video are links to some things that The Smithsonian National Air & Space Museum have contributed. All these are worth watching.

ESA-Euronews video: 50 Years via Satellite

Video 1

The Smithsonian Institute National Air and Space Museum Links:
The Smithsonian Institute hosted a commemorative event here.
The chair of their History Division, Paul Ceruzzi, produced a very good blog post here.

Many thanks to Isabel Lara (@isalara) at The Smithsonian for providing these two links.

Filed Under: Communication Satellites, Earth Stations, Organisations