AREG Buy’N’Sell Friday May 21st

The next meeting of the Amateur Radio Experimenter’s Group on Friday May 21st will be a Buy’n’Sell night. AREG members are encouraged to bring down their items for sale. Visitors are also welcome to buy and sell!

Entry is by gold coin donation.

We will open the hall at 6.30pm for sellers. AREG Member buyer entry is from 7.00pm and non members and general visitors from 7.45pm.

Sellers should email vk5arg@areg.org.au to request a table. (Note: We do not charge for tables).

Members are advised that there wont be a formal AREG business meeting on the night – that will be held online on a date TBA.

The venue will be the usual AREG clubrooms at the Fulham Community Centre, Phelps Court, Fulham.

This is a COVID-Safe event! People are asked to observe social distancing, check in at the door and follow the directions of our COVID Marshalls.

 

Next AREG Meeting: 16th April – Meteor Scatter by Kevin VK4UH

Image thanks to qrz.now

The Amateur Radio Experimenters Group is pleased to announce that we have a special guest speaker this month. (Dr) Kevin Johnston VK4UH will be talking to AREG about Meteor Scatter propagation and how to get started in the mode. Kevin will join AREG members assembled in our club-rooms in Adelaide via video-link from QLD.

Kevin will give us an overview of the astronomy and physics of meteors and their use for making long distance VHF contacts when no other mode of propagation is available.  The presentation is aimed towards those with no prior experience of this fascinating mode of communication.

(Dr) Kevin Johnston VK4UH

(Dr) Kevin Johnston VK4UH is a medical doctor and has been licences for 50 years.  He has had a try at almost all aspects of amateur radio through those years and is now focusing on long distance microwave operation, EME and Meteor Scatter


 

The presentation is scheduled to start as close as possible to 7:45pm ACST (1015z or 8:15pm AEST). The venue is the Fulham Community Centre, Phelps Court, Fulham. Doors open from 7:30pm.

 

For the AREG members outside of Adelaide, the session will be also streamed on Zoom.

 

Virtual visitors will be able to tune in via the “HamRadioDX” YouTube channel thanks to Hayden VK7HH.


Where are the AREG Clubroms?

 

Next Meeting: 26th March – VK5ARG’s Remote HF Receive Site

The next meeting of the Amateur Radio Experimenters Group will be held on Friday the 26th of March (delayed a week due to the hall being in use for an Adelaide Fringe event). The club will meet in person at the Fulham Community Centre, Phelps Court, Fulham with the doors opening at 7.15pm. The presentation will get underway at 7.45pm ACDT (8.15pm AEDT, 7.15pm QST, 0915 UTC). For members unable to attend in meeting hall in person, there will be a members only Zoom channel available as well. This meeting will not be streamed on Youtube.

The topic of this meeting will be the AREG Remote HF Receive Site – it’s history, what equipment has been installed, and live demos showing how it can be used to supplement your home HF station.

The remote HF receive site is the result of years of incremental improvements, resulting in what is now one of the best performing online HF receivers in the world!

 

Australian Facebook News Blackout: Subscribe to our Announce Mailing List instead!

The ongoing dispute in the national media landscape between Facebook and the Federal Government has resulted in AREG no longer being able to directly re-post our own information, news and events from our Website.

So you dont miss out, why not consider joining our “AREG News Mailing List”?

Simply send an email to:
announce-subscribe@areg.org.au

 

Next Meeting: 19th February: Live ATV from 30km+ altitude! How to get involved?

Project Horus began in 2010 as the brain child of a group of radio Amateurs here in Adelaide. Now, 11 years later, one of the ideas that has been discussed many times within the group is finally going to be attempted. A flight is tentatively planned for Sunday March 7th that will carry aloft our first ever digital ATV transmitter.

Live ATV from 30km+ altitude!

Adelaide from 100,000ft – Horus 12

How can you get involved?

So that as many people as possible can participate or at least attempt to receive the ATV pictures, the next meeting of AREG on Friday February 19th will feature a presentation and Q&A session with Mark VK5QI. He will take you though everything you need to know about how to receive and decode the ATV signal.

What system are we using?

For the first launch, we are going to use the following transmitter settings:

  • Transmit Frequency: 445 MHz
  • Modulation: DVB-S, QPSK, r=½ FEC
  • Symbol Rate: 1Msps
  • Video Resolution: 704×400

This will produce fairly low quality video, but will give the best chance for the payload to be received. Once we understand what the achievable signal-to-noise ratio (SNR) is for a typical flight, the symbol rate (and image quality) can be increased on future launches.

Receiving DVB-S Signals – Hardware

The most ideal way to receive signals from this payload is with a dedicated DVB-S receiver like the Minitiouner Express ( https://www.datv-express.com/ ), however it’s also very possible to receive it with Software Defined Radio receiver setups, such as the ubiquitous RTLSDR devices. You will also need a 70cm antenna with some gain, and a low-noise pre-amplifier.

While some DVB-S set-top boxes may tune down to 445 MHz, the very low bit-rates that we will be transmitting from the payload will likely be incompatible with them.

Suggested Software-Defined Radio Receivers

There’s a huge range of SDRs available which are fit-for-purpose in this application, provided you put a low-noise-figure preamp in front of them – ideally one with band-pass filtering. Examples include:

Mark testing the ATV receive across the bench

More detailed instructions and information will be posted to our website in coming days. Stay tuned!


Meeting Details

The main meeting will be held at the clubrooms, 1 Phelps Court, Fulham at the Fulham Community Centre. Doors will open from 7.15pm (ACDT) with proceedings starting at 7.45pm (ACDT) (0915z). For those unable to attend in person, we will have online options available too!

The meeting on February 19th will also be live streamed on YouTube thanks again to Hayden VK7HH and his HamRadioDX Channel.

For members unable to attend in meeting hall in person, there will be a members only Zoom channel available as well.

Links to these will be posted closer to the date!

January 15th Meeting: Electro-Mechanical Pin-Ball Machine Restoration

The next meeting of the Amateur Radio Experimenters Group will be held on Friday January 15th. The club will meet in person at the Fulham Community Centre, Phelps Court, Fulham with the doors opening at 7.15pm. The presentation will get underway at 7.45pm ACDT (8.15pm AEDT, 7.15pm QST, 0915 UTC).

This month’s topic is a little different, but equally fascinating. We will enter the world of Electro-Mechanical Pin Ball machine restoration thanks to Scott VK2JAX. Scott was talking about his activities during one of the clubs members Zoom round table gatherings, and enough interest was expressed that we decided to bring it to a main meeting to share with everyone!

Scott’s journey started in October 2019 when he was looking through Facebook Marketplace and saw a Pinball machine that was a little worse for wear. He couldnt resist purchasing it, and so began the long task of restoration. In this talk, he will go through the activities so far involved in restoring “Jungle”, an Electro Mechanical (EM) Pinball from 1972.

Topics covered will include

  • Why a Pinball for restoration?
  • Tools required
  • Different parts within a machine
  • The Back Box clean up (Stepper units, Score Reels)
  • Coin Door
  • Bottom Panel (Relay Bank, Score Motor)

You will learn about challenges faced, and the relaxing journey of restoring an EM pinball machine!


In addition to the face to face meeting opportunity, the meeting will also be streamed via Zoom for AREG members around Australia.

Non members will also get a chance to see the show streamed live via Hayden VK7HH’s HamRadioDX Youtube channel! Links for the specific Youtube live stream will be shared a few days before the event.

Keep watching the AREG website for details!

Next AREG Meeting: A Virtual Christmas Party – Friday December 18th

Merry Christmas everyone from the Amateur Radio Experimenters Group!

We have finally made it to the end of 2020 and what an unprecedented  year it has been! To draw a line under this year’s events, we are inviting our members to gather online this Friday night for a Christmas Chat on Zoom, hosted by our president, Matt VK5ZM. Bring your glass and share some cheer as we all start planning for 2021.

The Zoom session will open at 7.45pm ACDT (8.15pm AEDT, 7.15pm QST) and will last as long as the merriment prevails!

AREG will resume meeting in person in January and has some events in the wings for the fox hunters as well as a club picnic being planned.

Stay safe everyone and we wish you a merry Christmas and a Happy New Year for 2021!