Using the Pluto and RPi4 for Amateur TV and narrowband  –  Noel G8GTZ.

Following on from his “Advances in Amateur Television” talk at the 2017 RSGB convention, Noel Matthews, G8GTZ will be presenting on the latest developments in the ever-evolving world of Amateur TV.

Noel will give an overview of ATV activity in the UK and in particular how the use of Reduced bandwidth (RBTV) signals has enabled ATV QSOs on the lower VHF bands. He will give an introduction to the QO100 geostationary satellite which has enabled QSOs with fellow DATV operators as far away as Brazil, India and South Africa.

Noel will also be describing how the development of Software Defined Radio (SDR) based hardware and powerful single board computers such as the Raspberry Pi has revolutionised the development and capabilities of amateur radio dedicated products.

He will describe how it is possible for radio amateurs to build an advanced touch screen multimode narrowband and Digital ATV transceiver covering 50 MHz to 10GHz for under £350.

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All you need to get started in Software construction is a personal computer (Windows, Linux, Mac – they’ll all do), some spare time and, if you want to make a ‘thing’ then some loose change.

There are three easy and virtually free routes into writing your own programs: develop applications that run on your PC using the free Qt environment; write programs to run on one of the Arduino boards (£3 from China plus a USB cable) using the free Arduino application; or go for the middle ground with a Raspberry PI (around £40) and a wi-fi connection.

Heather will take you through the setup for each of these and show you just how easy it is to go from flashing an LED through developing an ATV receiver to producing a fully-featured windows PC application such as her Mapper entry in the RSGB construction competition.

Find out more

https://www.arduino.cc

https://www.raspberrypi.org

https://www.qt.io

https://github.com/

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Hidden deep in a serene forest yet taller than the clouds, standing in surreal beauty is an antenna array like none other on earth, having an aperture area greater than 15 U.S. football fields. One of the great wonders of the world – a top secret Soviet radar, so secret that even the name is uncertain, for it had many. It was the Russian Woodpecker. It was the Steel Yard. It was Duga.

The story of this top secret place is one of mystery and intrigue. Now abandoned, a rusting testament to man’s cold war hubris, almost all popular accounts on the web are seriously flawed – victims of deliberate disinformation. Where did it come from? What did it do? Did it transmit? Did it receive? Was it the first of three, or the third of two?

Keith Snyder, KI6BDR, has been busy reverse engineering to uncover truth before time erases history. Keith shows visible engineering clues that reveal the mission and correct the history of the huge “Duga 3” antenna Array. The Duga 3 is located a few kilometers from the Chernobyl nuclear power plant site. Although it has fallen into disrepair, it stands today due only to a hasty exit forced by radiation from the
Chernobyl nuclear accident. The nuclear accident ironically protected the array from dismantlement, a reprieve from all but the ravages of time. The antenna array today attracts tourists who visit Chernobyl. It is one of the 8th wonders of the world due to its Titanic size.

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Tim will provide a quick overview of the most common digital modes (D-STAR, DMR and Fusion) as well as some of the less common modes. Tim will explain how you might use them.

Which mode is the best? Tim will look at code-plugs and hotspots and try and demystify some of the jargon for you.

Technology permitting, he’ll try and do a demo with the chance for a little audience participation. Rather than being a heavy session, the emphasis will be on light but informative content.

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BBC journalist and long-time RSGB member Laurie Margolis broke the fact of the invasion of the Falklands through amateur radio. Here’s how…

He will also cover his involvement in the 1970 King Hussein story.

In this 40th anniversary year since the Falklands War, we are delighted to have this presentation from Laurie.

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Whether you’re a seasoned contester or just starting out in this aspect of amateur radio, this is bound to be an interesting presentation.
Mark is the founder of Contest University UK and is the current holder of the all-time England record for the CQWW CW, CQ WPX CW and IOTA contests as well as many more single band records. He is a member of the K3LR Multi-Multi USA and TI7W Costa Rica Teams and also a committee member for CQ World Wide.

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Professor Ian Morison, G0DMU will give a review of the history of Jodrell Bank, one of the world’s premier radio astronomy observatories; from its founding in 1945, the completion of the Mk I (now Lovell) radio telescope in 1957 – still the third largest fully steerable telescope in the world – and the building of the MERLIN array in the 1980s and 90s.

The MERLIN array has the same resolution as the Hubble Space Telescope and many collaborative observations have been made over the past 30 years. Its seven telescopes also link up with others across Europe to provide an instrument whose resolution far exceeds that of optical telescopes.

Some of its most exciting discoveries will be discussed in the context of how radio observations are made – many of which can complement those made by optical telescopes.

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This presentation covers a range of antenna-related information so there should be something for everyone:

What makes a radio wave? Some mysterious properties of radio waves which you might not have appreciated. How do you launch radio waves? Antennas. Radiation resistance. Radiation patterns. Antenna gain. Transmitting and receiving. Getting power into, and from, your antenna. Resonance, or lack thereof. Feeders. Feeder impedance. Matching – does VSWR really matter? Why can’t you make a monopole? Multi-element antennas. Phased antennas.

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Now that we’ve filled our logbooks with FT-8 contacts, maybe it’s time to move on and start communicating again!

In this illustrated talk, Mike Richards, G4WNC introduces you to the best data modes for keyboard QSOs.

In addition to explaining their operation and configuration, Mike will run through some operating techniques to take the strain out of keyboard QSOs.

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Have you ever considered operating while on holiday? In this presentation, Daimon covers the things you might wish to consider if taking a small HF station with you, either at home or abroad. From family, licensing, mode and other considerations, Daimon will focus on some practical examples of antennas and small stations that he uses himself to be QRV, wherever he is.

This presentation will focus on practical aspects of leisure operating as an aside to your holiday, rather than being the main component – this is not a presentation about planning DXpeditions.

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Tonight @ 8 webinars are live-streamed, allowing you to watch the presentations and ask questions online.
They can also be viewed on a later date on the RSGB website and YouTube.