July General Meeting: Introduction to Antenna Modelling

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The next AREG meeting will be held on Friday 21st July, starting at 7.45pm at the Reedbeds Community Centre, Fulham.

We are pleased to announce that the speaker for the July meeting will be Paul Lawson VK5SL. Paul will be introducing you to the basics of Antenna Modelling, and will demonstrate how to get started using the 4NEC2 program to examine antenna performance (4NEC2 is freely available on the Internet). He will take 3 of the antennas that Chris VK5SA described in his wire antennas for beginners talk a few months ago and show how you can visualize their radiation patterns and what their characteristics are on various frequencies.

In particular, Paul will show you how to model a basic dipole, a Windom (OCF Dipole) and an inverted V antenna, explaining how to define these in the software, what the components in the software do and how to set them to produce useful models of how the antenna is performing. This will be a great simple introduction to the topic of antenna modelling.

For those who then want to delve deeper, Paul has agreed later in the year to run a tech night where more complex antenna modelling will be examined for those who want to take it further.

We hope to see you at the club on Friday July 21st. Doors open at 7.45pm with the presentation getting underway at 8.00pm sharp.

AREG Next Meeting: Introducing LF and MF by Doc VK5BUG – 16th June

The next meeting of the Amateur Radio Experimenters Group Inc will be held on Friday June 16th, starting from 7.45pm at the Reedbeds Community Hall, Phelps Crt, Fulham.

The topic for this evening will be introducing LF and MF communications techniques, presented by David (Doc) Wescombe-Downs, VK5BUG. Doc is a pre-eminant authority on everything LF and MF in Australia, and is one of the modern pioneering amateur experimenters of these bands today. If you have ever wondered how on earth you can start using the 630 and 2200m bands from home, then come on down and hear Doc talk about whats possible.

Doc will also have a limited number of his books available to purchase for those taken with enough interest in the subject.

LowBand Book Promotion Flyer

After the presentation, there will be a short business meeting plus time to socialize and hear more about what happened at this year’s River Paddling Marathon (being run over the June long weekend and being supported by AREG and RRC).

You will find the clubrooms at the following address! We hope to see you there!

AREG Beginners Series: Introducing HF Wire Antennas – April 21st

Next AREG Meeting: Friday April 21st – 7.45pm

Continuing with our beginners series presentations this year, this month we have Chris VK5SA who will talk us through the basics of the simple wire HF antenna. He will explain the characteristics of a set of simple to build yet effective HF antennas that anyone can make, often for less than $100 worth of materials. He will show you the merits and limitations of several of them, including:

  • Basic Dipoles
  • Offset Centre Fed Dipole
  • Inverted V
  • Fan Dipole
  • Terminated Folded Dipole

Samples of how to build many of these will also be on hand for people to take a look at.

Meeting Time & Location

The meeting will be held at the Reedbeds Community Centre, located off of Phelps Court, in Fulham. The clubrooms will open at 7.45pm with the meeting to commence at 8.00pm sharp.

Tea, coffee and cake will be available for a small donation after the presentation. Following that, the monthly business meeting will be held.

As always, AREG meetings are open to everyone, so if you are interested in starting out on HF, then this is a great opportunity to hear about some simple antennas to get you underway!

Australian Contesting Technical College – Friday 19th May 3-5pm

Have you ever wanted to learn about contesting but didn’t know where to start? Did you ever want to learn the secrets of how the big stations earn their scores? Well now is your chance!

In May, AREG will be hosting a special event immediately prior to the WIA AGM in Adelaide. On Friday 19th at 3:00pm, the club proudly invites you to attend the “Australian Contesting Technical College”, presented by Trent Sampson VK4TS. The venue will be the clubrooms, located at the Reedbeds Community Hall, in Fulham (5 minutes from the airport for those around Australia flying in who would like to attend). This once in a lifetime event is open to anyone with an interest in Amateur Radio Contesting.

Trent VK4TS with Alan VK4SN

Trent Sampson VK4TS is the Contest Columnist for AR magazine and a member of the Lambda Contest Group who operate under the Callsign VK4KW and holds many records in Multi Operator categories in SSB RTTY and CW.

During the 2 hour session, Trent will discuss setting up a modern contest station for SO2R (SIngle Operator 2 Radios) operation as well as Multi operator station considerations, including equipment selection, interfacing, and antenna selection.

The Antenna selection part will include a real life appraisal of a contest location (likely to be one of the AREG sites) and how well it will work using High-Frequency Terrain propagation analysis.

When considering software, Trent will discuss examples of how to use the most popular software and the lessons learned from it.

Topics Covered will include:

  • Multi Operator Stations,
  • SO2R Operation
  • Filtering; Bandpass and Coax Stub,
  • Antenna selection Software usage,
  • N1MM with examples of SSB RTTY and CW.

So organise your Rostered Day Off now, or arrange to get into Adelaide a little bit earlier that day if travelling from interstate and make your way to the Amateur Radio Experimenters Group clubrooms for this once off special event!

AREG Members note: this is in addition to the May Meeting, the hall will close between 5:30 and 7:30 then reopen for the normal monthly meeting. As always visitors are welcome.


Where to find AREG

AREG March Meeting: Space Weather and Ionospheric Prediction

The Amateur Radio Experimenters Group is proud to announce our guest lecturer for our March general meeting is David Neudegg, Principal Space & Radio Scientist, Space Weather Services (Australian Federal Govt). David formerly worked for the Ionospheric Prediction Service before that agency was reconstituted inside of the Bureau of Meteorology.

David brings a wealth of knowledge about the ionosphere and how it works and will provide a fascinating insight into how it’s behavioral predictions relate to people’s real world experiences when using HF radio communications.

Meeting Details

The meeting will be held on Friday March 17th at the Reedbeds Community Centre, off Phelps Court in Fulham. Doors will open at 7.45pm, with the presentation beginning at 8.00pm.

Visitors are most welcome! We hope to see you there!

 

Next Meeting: How to track Project Horus Balloons!

The next meeting of the Amateur Radio Experimenters Group will be held on Friday February 17th, starting at 7.45pm.

This month, Matthew VK5ZM will be showing everyone how they can get involved in telemetry tracking during a Project Horus balloon flight. Matt will explain the basic equipment any amateur can use to receive and decode the RTTY telemetry from the balloon.He will also discuss the value to the project team you can bring by taking the time to decode the telemetry for us, as every frame collected and relayed to the Internet is added to the data being used by the recovery teams seeking to retrieve the payloads at the end of every flight.

The next launch that you can then try out your new skills is the following weekend, so this is very timely! Horus 43 which is being flown for Rostrevor College is planned to launch Sunday February 26th at 10.00am.


The presentation will be followed by a business meeting. Visitors are most welcome to attend! Come on down and find out this and many other aspects of the activities being undertaken by the AREG!

You will find the club at the Reedbeds Community Centre, off Phelps Crt, Fulham.

Next Meeting: 20th Jan – Radio Beginner Series: The art of QSLing

During 2017, the AREG is planning a set of presentations to be known as the “Radio Beginner Series”. The intention is that every 4 months, the evening will be dedicated to something simple, but which any beginner starting out may not have been exposed to before. Ideal for foundation licensees, but also equally applicable to old hands trying out a new aspect of the hobby that they haven’t engaged with before.

The Art of QSL Cards and Confirmations

This month, the topic of sending and receiving QSL cards will be introduced, including all of the ways that you can achieve confirmation of your contacts, particularly if you are chasing awards. The talk will cover things like:

  • QSL card design – what to put on your cards
  • Ways of sending physical cards
    • Bureau
    • Direct – IRCs and “Green Stamps”
    • via QSL Managers
  • How to get electronic confirmation
    • ARRL’s Logbook of the World
    • eQSL.cc
    • ClubLog Log Matching & OQRS QSL Request Services
  • How do you manage Multiple Logs on these services?

The doors will open at 7.45pm, with meeting starting at 8.00pm. After the main presentation, tea coffee and supper is available followed by a general meeting. Hope to see you there!

Next Meeting: Friday Nov 25th: Live Balloon Imaging System

Note: Changed meeting week this month – 4th Friday (not the normal 3rd)

SSDV Experimental Payload – ‘Wenet’

Mark VK5QI and David VK5DGR have been working on a slow scan digital image payload for the balloon system which transmits at 115kbit/s on a new downlink channel. This system makes uses of the UKHAS SSDV server to stitch together images from packets uploaded by multiple receivers. You can read more about the system on Mark VK5QI’s blog.

Unlike analog SSTV, SSDV sends down compressed JPEG images via some form of data link. Written by Philip Heron, the SSDV software converts a JPEG image into a set of packets which can be transmitted via a radio link and then re-assembled on the ground. Unlike regular JPEG images, if a packet is lost, SSDV will still produce a full image, albeit with some portions missing.

Wenet RX software running within a Ubuntu Virtual Machine

At the meeting Mark and David will give you an insight into how it works. This system will be demonstrated in the field as well during coming Horus flights.

Meeting Time

The clubrooms will be opened from 7.45pm with the presentation starting at 8.00pm. Visitors are most welcome! You will find us here: