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

Posted on 2016-11-17 by Grant

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:

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AREG at the Adelaide Maker Faire TODAY!

Posted on 2016-11-05 by Grant

How does the amateur radio service relate to the maker movement you might ask? In many ways, amateur radio is the grandfather of the maker movement. People have been tinkering and experimenting, building their own equipment and radio stations, all in the quest to communicate with each other for well over 120 years!

Today, the range of things within Amateur Radio to get involved in building, designing, inventing or experimenting with is even broader, really only limited by your imagination!

The following article from Makezine.com in the USA gives you a great introduction to the relationship between the Maker Movement and Amateur Radio.

The Amateur Radio Experimenters Group is today at the Adelaide Maker Faire 2016! Billed as the largest Maker Faire in the southern hemisphere, this is a great opportunity to come and find out more about Amateur Radio!

You can find the event in the grounds of the new Tonsley TAFE campus! AREG will be there from 10am to 4pm. Come and say hello!

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AREG at the AHARS Hamfest 6th November

Posted on 2016-10-28 by Grant

AREG will again be present at the AHARS Buy’n’Sell event on the 6th of November! This yearly event, is a regular on every Amateur Radio Operator’s calendar in Adelaide and is not to be missed.

Apart from amateurs there will also be commercial retailers of amateur equipment in attendance. This is an ideal opportunity to pick up that new item without the cost of freight.

AREG will have much on offer!

The AREG has been lucky this year and has obtained a large amount of surplus equipment that it will be able to offer to the Amateur Radio community in Adelaide. This will include lengths of LMR400 coax, repeaters and many other components and gadgets which are useful to anyone who constructs anything electronic at home. So, come on down to the AHARS Buy’n’Sell. Doors open at 9.30am!

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AREG going to the Adelaide Maker Faire!

Posted on 2016-10-23 by Grant

The Amateur Radio Experimenter’s Group is going to mount a display at the Adelaide Maker Faire this year. This will be a huge opportunity to promote Amateur Radio to School and University age people and their parents as a fun challenging activity to get your collective creative juices flowing in.

Members are currently in the process of constructing our display. If you want to get involved, contact Kim VK5FJ who is coordinating the event for the club

Next Meeting: 28th October – Digital 70cm ATV

Posted on 2016-10-06 by Grant

NOTE: CHANGED WEEK THIS MONTH – 4th Friday – 28th October

The next meeting of the Amateur Radio Experimenters Group will be held on Friday October 28th, at the Reedbeds Community Hall, Fulham in Adelaide. The meeting time has been moved back one week in October and November this year due to the availability of the hall.

Digital Amateur Television on 446.5MHz

Steve Adler, VK5SFA will be giving a presentation of his experiments this year setting up a DVB-T ATV transmitter on the 70cm band. The discussion will include how others can get involved in these experiments, including how to receive the 446.5MHz Digital TV signals.

The system that Steve is experimenting with is using the same modulation standards as the main broadcasters. This means that at least some current TV sets can directly tune to the channel, while for others, the purchase of a cheap set top box from one of several retailers (for <$100) will get you access to Steve’s signal.

So why not come along and find out all about digital ATV?

The hall will be open from 7.45pm with the meeting starting at 8.00pm. Visitors are most welcome

VK5ARG/P Para Wirra Park This Weekend Cancelled

Posted on 2016-09-20 by Grant

AREG OCDX Contest Field Day Event

CANCELLED!

Due to the unprecedented weather in SA over the last few days, National Parks South Australia have advised that Para Wirra Park will again be closed today. This has lead to AREG making the decision to cancel the planned activities in the park.

Operation in the contest will still go ahead but from a private location. See further reports for updates.

The Amateur Radio Experimenters Group is again entering the Oceania DX SSB Contest over the October long weekend (October 1st and 2nd).

The club is once more mounting a major portable operation from Para Wirra Recreation Park. VK5ARG will be active on all bands from 160-10m during the contest using 5 QRO (high power) stations.

Station Visitors Most Welcome!

As has been the case the last couple of years, the station construction will commence from Friday morning, with the aim of having the major components operational no later than midday Saturday. This provides an ideal opportunity for members, but more importantly general amateurs and members of the community, to come along and “have a try”. AREG will be turning the station over to all takers for the hours before the contest so that people can experience operating the station.

To come and visit, you will need to head to Para Wirra Recreation Park, You will find us here. For those who pre-register, there will be catering available on a “Pay as you Go” basis for modest prices. The station will be active for the full 24hrs from 0800 UTC Saturday to 0800UTC Sunday. Visitors should call the station on 2m (146.550) when you reach the park.

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Para Wirra Park Map

The Station: VK5ARG/P

The station will be substantial with full size rotatable dipoles on 40m, a 3 element beam on 20m, a Spiderbeam for 15m and 10m and full size dipoles on 160m and 80m. All stations will be running 400W. It is certainly impressive to see the arrays of antennas in use during the event…..

Qualification of World Wide Flora and Fauna park: VKFF-1739

Back in May 2016, the Para Wirra Recreation Park was redesignated a conservation park, and so it now qualifies for the world wide flora and fauna awards program as well. As the station is operating in the OCDX contest we wont be conducting the usual publicity of a parks activations. However, contacts with VK5ARG/P will still qualify for the VKFF-1739 park! We will ensure the log is uploaded to the Parks and Peaks database at the conclusion of the activation. You may also find us on air testing from as early as Friday night through to Sunday night.

So look out for us calling CQ during the contest, and if you are in the Adelaide area, come on up to Para Wirra Conservation Park and say hello! We would love to see you!

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10/15m Station illuminated at night – Starlapse by VK5GR

Next AREG Meeting: Microwave Equipment and Operation

Posted on 2016-09-07 by Grant

The next meeting of the Amateur Radio Experimenters Group will feature an introduction to Microwave Amateur Microwave Equipment and Communications, presented by guest lecturer, Iain Crawford VK5ZD. Iain will be talking about the gear he uses and some of the basic operating tips involved. This will provide the ideal opportunity to whet your appetite for these bands just as the sunspot cycle draws to a minimum on HF, and coincidentally right before the VHF/UHF contest season!

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Iain has been experimenting with these modes for many years, and has constructed transverters for 23cm, 13cm, 9cm, 6cm and 3cm.

The meeting will be held at the Reedbeds Community Hall, Phelps Court, Fulham on Friday 16th September. Doors will open at 7.45pm with the presentation starting at 8.00pm.

After the talk, there will be coffee and cake and an opportunity to socialise with fellow amateur radio enthusiasts, followed by a short AREG business meeting.

All amateur radio operators and people with just an interest in radio in general are welcome to attend! We hope to see you there!

Next Meeting: August 19th – HF Digital Modes for Beginners

Posted on 2016-08-07 by Grant

The next general meeting of the Amateur Radio Experimenters Group will be held on Friday August 19^th. Doors open 7.45pm with the meeting starting at 8.00pm.

The topic for the evening will be “Introducing Digital Modes on HF – how to get started – from a beginner who just has”. I will be taking you through what can be achieved on a fairly modest HF station using digital modes, including what software you can use, what hardware you need and what some of the more “exotic” modes are that you can play with on HF digital, including:

Feld Hellschreiber Signals on 20m

RTTY
PSK31/63/125
MFSK16
Olivia
Contestia
Hellschrieber
JT65/JT9 and WSJT
SSTV

MFSK16 from VK2YQA/4 on 20m

I will also discuss calling techniques, frequencies and contesting on HF as well as logging on rig integration.

I don’t profess to be an expert on these modes either – this is all relatively new (apart from RTTY) to me too (despite being licensed since the 1980s) as until March this year I had never had my own HF station. Having said that, even with a modest 100W station I have managed to work 62 countries using a variety of these modes, even in the relatively poor conditions on HF that we have seen over the last 6 months.