Next Meeting: Transmitting Magnetic Loop Antennas for 160-40m

The AREG is pleased to announce that our guest speakers for our next regular monthly meeting will be Steve Adler VK5SFA, Leigh Turner VK5KLT and Paul Lawson VK5SL. They will be talking about their work on Transmitting Magnetic Loop Antennas for the lower HF bands including both the theory and practical aspects of their operation and construction.

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VK5SFA 160-75m Transmitting Magnetic Loop Antenna

Steve has been using one very successfully on 160m and was kind enough to loan the AREG SPDX RTTY contest team his 40m one for use up at Morialta this past weekend.

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VK5SFA 40m TMLA (used by AREG in the SPDX RTTY Contest)

These are fascinating antennas in the way they work and in the way they perform. Their noise immunity is something in particular to consider in urban environments where amateurs are space and electrically environmentally challenged.

Full details of how to build these antennas and the theory behind them are available via Steve VK5SFA’s website.

When and Where?

You can meet Steve and the team who designed and built them in person at our next meeting on Friday May 20th, starting at 7.45pm (for an 8.00pm start). You can find details of where the AREG meet on the contacts page.

Visitors are most welcome to come along! A short business meeting will be held after the presentation.

WIA VK5 Inwards QSL Bureau – New Operational Details Announced!

The Amateur Radio Experimenters Group is wia-logo-image_1_hirespleased to announce that it has finalized the new arrangements for the WIA VK5 inwards QSL bureau. Grant VK5GR is the current volunteer VK5 bureau manager from AREG. The club will be following the existing WIA QSL policy and will continue to encourage all amateurs that use the QSL Bureau to join the WIA.

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Specifically, the arrangements will be:

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  • All outgoing WIA member QSL cards are to be sent to the national outgoing QSL address (the AREG will not be handling outbound cards):
    WIA Outwards QSL Bureau
    P.O. Box 66
    Boolaroo
    NSW 2284

Incoming QSL Cards to the VK5 Bureau

  • Incoming cards for WIA members are to be sent to the national incoming QSL address (not the AREG PO Box as previously advised by the WIA)
    National Inwards QSL Bureau
    P.O. Box 2040
    Bayswater Vic
    3153 Australia

Information for VK5 WIA Members

  • VK5 WIA members will continue to receive cards in the mail once a year to their registered WIA membership address. To update this address, please contact the WIA National Office
  • VK5 WIA members can nominate an affiliated WIA club to receive their cards for distribution on their behalf. This will likely increase the frequency that cards will be distributed.
  • VK5 WIA members can also arrange an off cycle collection of their cards at an AREG club meeting by prior arrangement (please give at least two to three weeks notice so that we can ensure that your cards are at the meeting for collection). Email vk5bureau@wia.org.au if you wish to pick up your cards at an AREG meeting this way

Information for WIA Affiliated Club members

If you are not a WIA member but you are a member of an affiliated WIA club in VK5, you can still receive your QSL cards via your club secretary.

The individual club secretaries are responsible for keeping the VK5 QSL Bureau manager up to date with your club membership status. Every time a club mail out is planned, the bureau manager will check with the secretary for their latest membership lists.

Information for non-members

Non members of the WIA or an affiliated club who have QSL cards arrive here at the bureau need to make sure they are collected at least once per year, or they will be destroyed. Once a year, cards will be taken to an AREG meeting in Adelaide for non-members to visit and collect them. Cards will also be made available at the yearly AHARS Buy’n’Sell event.

If non members wish to have their cards posted to them, they must forward a self addressed pre-paid 5kg mailing satchel or if there are less than 20 cards in the bureau, they must send a self addressed heavy letter stamped ($3.30 at time of writing)  envelope. No other form of non-member collection is accepted by the VK5 bureau. Email the bureau manager first to confirm the volume of cards to be collected.

Ideally, non-members are encouraged to become members of the WIA to help cover the cost of their incoming use of the QSL bureau.

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Andrew VK5XFG, Sharon VK5FSAW, Gary VK5FGRY and Andy VK5AKH sorting cards with Chris VK5CP and Grant VK5GR

 

AREG develops kit which allows real time display of Antenna radiation pattern

The Amateur Radio Experimenters Group, one of  Adelaide’s leading Amateur Radio groups is pleased to advise that after months of research and experiments at a secret location, it has developed and perfected a process whereby the radiation pattern of any HF antenna can be displayed visually, full size in real time.RfPatternSmoke-AprilFools

The kit includes a canister of particles which are sensitive to E and H field radiation. The particles are suspended in harmless nitrogen gas which, once released near an antenna will align to show you the radiation pattern of that antenna whilst it is transmitting. When the particles are charged by the E and H field radiation they become opaque, arranging themselves along the lines of maximum intensity of the emitted electromagnetic field. The end result is a real time ‘Smith Chart’ like representation of the Antenna radiation pattern.

The deluxe version of the kit uses a laser, guided by a PC controlled mirror arrangement, to display a grid pattern for calibration purposes, which will allow you to take a photograph for storage and future analysis.

A patent application has been prepared for lodgement, after which time the proposal will be presented at the April Monthly meeting. Kits will be funded through the “StartKicking” process in due course.

Dateline: April 1st 2016
Contributors: VK5CP, VK5ZM, VK5FGRY, VK5GR