Introduction to Meteor Scatter communications  –  Gavin MM1BXF.

Have you ever thought about making more QSOs over a longer range on VHF? This talk will give you the background on how to achieve that through bouncing your signal off meteor trails. During the talk Gavin will show you how and why Meteor Scatter communications work: what software you should use, how you should use it, and when you should use it.

He’ll also look at what tools are available to help you to maximise your QSO count.

Repeaters: how they are built, planned, commisioned and used  –
Steve F4VTF/G8SFR

Voice repeaters have been with us in UK for almost 50 years a lot has changed in that time. We all are aware of repeaters but how many of us have considered what’s involved in getting one commissioned?

In his presentation, Steve will cover a wide variety of information about repeaters, including the following:

• What is a repeater, even in its most basic form?
• What is required to put a repeater on air?
• Are all repeaters connected to the internet?
• Is it important to support your local repeater group?
• Don’t just listen….put out a call, respond to other people’s calls even if you don’t know them!
• Is a Simplex Gateway an alternative to a voice repeater?
• What does Emerging Technology Co-ordination Committee(ETCC) do?
• Where can you find out more information

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Bitx to SBitx: The journey and development of this exciting and affordable range of transceivers by Ashhar VU2ESE.

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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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