AREG IRLP & DSTAR Gateways Back in time for JOTA

 

After several months of disruptions due to lightning and HDD failures at both the VK5RSB IRLP node and the VK5RWN DSTAR Gateway AREG is pleased to announce that we have been able to restore both services in time for this weekend’s Jamboree on the Air for the Scouting and Guiding communities.


VK5RSB Internet Relay Linking Project Node #6214

The IRLP Node 6214 will be available for use by users supporting JOTA this weekend, 20, 21 October. The node can be accessed via the VK5RSB 70cm repeater on 439.900 (-5MHz) using a 91.5Hz CTCSS access tone.

In the support for JOTA, the prefix access code has been removed for this weekend, thus allowing free access to the node.

Therefore to access remote IRLP nodes,

  • dial in the 4 digit DTMF node address of the remote node.
  • to disconnect the IRLP connection, just dial “73” a the end of the QSO.

AREG wishes the JOTA teams and other users, to have fun with contacts via the IRLP Node 6214.


VK5RWN DSTAR Gateway Restored for the 2m/70cm repeaters

The VK5RWN D-Star repeater and gateway is also now fully functional after its computer rebuild. It’s new computer has been installed and the gateway configuration is now complete using the new ICOM G3 software.

Currently the configuration is;

  • Port C, the 2m port, is unlinked and available for general use or user linking to reflectors and gateways etc (147.0375 +600kHz)
  • Port B, the 70cm port, is permanently linked to Reflector REF023C and will output any activity on this reflector and will repeat local RF activity on the 70cm channel into the reflector network. (438.400 -5.4MHz)

NOTE: Port B may be disconnected from the link to REF023C with the unlink command, “^^^^^^^U” , (the ^ represents spaces)  then it may be connected by the user to another address.

VK5RWN activity is now being reported to various Dashboards,

D-Star network access seems to fully functional. Ben VK5BB reports that he has tested linking to several reflectors through the local gateway as well as connecting directly to VK5RWN via his JumboSpot hot spot successfully.

So, any members or DSTAR users in Adelaide who have an interest in D-Star, have D-star capable radios and are registered on the D-Star system, please give VK5RWN a try out and feedback will be appreciated please?

73 from Ben VK5BB

AREG’s 20th Anniversary Event – Horus 50 Balloon Launch – 4th November 2018

2018 marks 20 years since the Amateur Radio Experimenters Group was formed. To celebrate this milestone, the club is planning to fly a special Amateur Radio focused high altitude balloon in what will be the 50th Project Horus Mission.

The Project Horus team itself is also celebrating 8 years in the air! Project Horus was founded by Terry Baume and continues to perform regular high-altitude balloon launches from locations around South Australia under the auspices of the Amateur Radio Experimenters Group.

When will this be happening? Currently it is planned to fly on Sunday the 4th of November (weather permitting). Liftoff is planned for 10AM ACDT. We are going for altitude so coverage will hopefully extend as far as Melbourne at the peak of the flight.

The goal is to engage with amateur radio in as many ways as possible. We want you to talk through the balloon, see the world from the balloon’s perspective and know where the balloon is during the flight! How can you do all this you might ask? The Project Horus team have specifically tailored this flight to include:

  • a 2m (down) / 70cm (up) Cross-band FM repeater. Amateurs within the repeater footprint will be able to make live QSOs with the club station VK5ARG and each other via the FM repeater using relatively modest stations.
  • a 2m SSTV beacon transmitting images from the balloon live during the flight. You will be able to see the world from the balloon’s perspective using a 2m receiver and simple software (you can even use an app on your phone).
  • Track the balloon via a 2m APRS beacon during the flight!

The launch site will be the usual Mt Barker High School Oval. Launch crews should be on-site around 8:30-9AM. If you haven’t attended one of our launches before, this is a great opportunity to come along and see what’s involved first-hand!

As usual, there’s always the chance the weather for the planned launch date may not be suitable, so a backup launch date of Sunday the 18th of November has been tentatively penciled in (the 11th being the AHARS buy & sell weekend).

Cross-band FM Repeater

Likely suspects operating the cross-band repeater on Horus 23

The cross-band repeater will be using the following frequencies:

  • Uplink: 438.900 MHz, with a 123 Hz CTCSS tone required for activation.
  • Downlink: 147.500 MHz  (~1.4W output power).

To transmit to the balloon at the maximum range of 700km (once the balloon reaches >30km) you will need approximately 10-30W and an 10dBi gain antenna and a clear takeoff towards the balloon. Those stations closer to the launch site will be able to get away with much less.

PLEASE MAKE SURE YOU can hear the repeater before transmitting
and remember to make sure you SET YOUR CTCSS TO 123Hz
or you will not access the repeater.

As with previous flights, the repeater will be run as a controlled net. Listen for VK5ARG acting as net control and please follow their instructions so that as many people as possible can share the repeater.

FM-SSTV Imagery Payload

Instead of the usual Wenet imagery payload this launch will have a new SSTV transmitter operating on 145.100 MHz FM. It will run approximately 250mW transmit power. The transmitter will have 30 second gaps between image transmissions to avoid overheating the transmitter.

Scottie 2 SSTV Imagery Example

The payload will be transmitting images using the Scottie 2 SSTV mode throughout the flight, and can be decoded using any SSTV software capable of decoding this mode (pretty much all of them!). This is a mode that typically is used on HF but is equally adapted to VHF FM work. (Note it is not the same as the PD120 transmissions from ISS).

Examples of suitable software you can use to decode the SSTV pictures include:

Any FM receiver (including handhelds) should be capable of receiving this payload, though as with the cross-band repeater, a Yagi antenna may be necessary for reliable reception at the edges of the transmitter footprint.

If you do receive images, please post them to Social Media and on Twitter include the #horus50 hashtag so everyone can see them!

Telemetry Payloads

As always, we’ll be flying the usual assortment of telemetry payloads, including:

  • Our usual 100 baud 7N2 RTTY telemetry on 434.650 MHz USB. This can be decoded using dl-fldigi, with a reception guide available hereNOTE: There is a known issue with dl-fldigi where it does not upload any received telemetry until about 10 minutes after the software is started. Any telemetry received in this time period will be queued and uploaded after the startup period has completed (i.e. no telemetry will be lost).
  • 4FSK Telemetry decoder

    The new 4FSK Binary telemetry will be transmitting on 434.640 MHz USB. This uses a separate decoder, with setup instructions for this available here. (Previous listeners note that there have been updates to the software – please re-download the latest version!). We would love reports of how the 4FSK signal compares to standard RTTY!

  • If weight permits, there will be an APRS beacon operating on 145.175 MHz with the callsign VK5ARG-12. This will be received automatically by the APRS network.
Tracking of the flight will be available on the HabHub Tracker, available at this link. (Note that other balloon launches will also be visible on this page, including the Bureau of Meteorology launches from Adelaide Airport).
Follow the #horus50 hashtag on Twitter for updates from the launch and chase teams on the launch day.
Stay tuned for updates closer to the launch date…
73
Mark VK5QI

IRLP Node 6214 on VK5RSB 70cm off air!

The Amateur Radio Experimenters Group are sorry to inform the amateur radio community and the users of the IRLP node 6214, that the node is off air for the immediate short term future.

The IRLP node computer, a Raspberry Pi 1, was a victim of the lightning storm over Adelaide Tuesday evening on the 2nd October.

The QTH from where the equipment operates, was directly under a large lightning bolt, which did not strike the ground or local area. It appears though, that the Electro Magnetic Pulse from the lightning bolt did impact immediately below and caused inducted currents in the LAN Ethernet cables connecting the Raspberry Pi to the QTH computer LAN system and the NBN.

The effect of this induced current on those Ethernet cables, took out the QTH modem and the Ethernet ports on the IRLP Raspberry Pi and the shack computer. All other equipment was or does not appear to have been affected.

A call has gone out for a replacement Raspberry Pi 1 as it would be a drop in replacement. If a Raspberry Pi 1 cannot be obtained then later models can be used but, a new operating system image will need to be built up.

So, until a replacement Raspberry Pi is installed, unfortunately the IRLP node 6214 will be off air.

We will keep you posted when updates are available.

OCDX Contest Low Band Antenna Test & Tune Day

The Low Band station team for the AREG OCDX effort this year are planning a working bee this Sunday (Sept 23rd) starting at 1pm. The aim is to erect, tune and test the 160m vertical that we plan on using for the contest. We will be using the vacant paddock on Lyons Road in Dernancourt just west of the Hope Valley reservoir (opposite the community hall).

If you would like to come and help, offer words of encouragement or go for a walk laying 700m of radials out, you would be most welcome. As the wavelength suggests, everything is big at 160m. The vertical will be 17m tall and have 16x40m ground radials so it will take a bit to get it in the air. Any help will be welcome.

We also plan on doing a verification test of the 80m vertical as well time permitting.


Update: 24th September – we had the antenna in the air on Sunday after a couple of mechanical hiccups. Tuning was proving a little complicated and an alternate matching network is being drawn up to overcome this.

Here are some photos from the tune and test day. A big thanks to everyone who came along and helped (VK5FGRY, VK5FO, VK5RR, VK5TST, VK5XDX, VK5SL, VK5GR, VK5SFA, VK5ZAR).

VK5ARG RD Contest Results 2018 – 1st Place Multi-One

The Remembrance Day Contest Results are out for 2018 and we are pleased to announce that VK5ARG scored first place this year in the Multi-One category with 875 points. Thank you team for all your efforts in the freezing conditions and we look forward to running it again in 2019! A special thanks also to Paul VK5PH who let us use his hills QTH for the event.

AREG welcomes newcomers to the hobby!

Today AREG ran a foundation and license upgrade exam service at the club rooms. We are pleased to announce that we have 4 new amateur radio operators now joining the ranks!

The club would not have been able to offer these exams without the support of our examiners, so a big thank you is due to Ivan VK5HS, Chris VK5CP and Paul VK5PH for taking the time to come and facilitate for us.

The club would also like to thank those AREG members that popped into visit and offer support and take the time to assist our participants in feeling welcome, relaxed and even participate in the practicals. It was great to see everyone chipping in… To Gary VK5FGRY, Darin VK5IX and Chris VK5SA again a big thank you. A special thanks also to Leslie Levingston who took the time to bake a serious number of cupcakes as “brain food” for all to enjoy.

Once again a big congratulations to everyone that passed their examinations today and we look forward to seeing you get started on air. Your amateur radio journey is now beginning so please consider dropping in to the AREG at future meetings – you will find many people willing to help you along your way!

 

AREG and the WIA RD Contest 2018

RD Trophy

The Remembrance Day Contest 2018 has come and gone. This year AREG put it’s club station on the air from a new location thanks to Paul VK5PH and his new hills retreat. Just 20 minutes into the Adelaide Hills, this new location was absolutely RF quiet and had an excellent HF takeoff angle in almost every direction. At 548m ASL, it was only 150m below Mt Lofty (the highest peak in the southern Mt Lofty Ranges).

The operation was led by Grant VK5GR who supplied the station, with assistance from Andrew VK5AKH who supplied the main generator and AC power grid. Quite a few AREG club members came up to the site and helped construct the station, as well as Paul,  Gerard VK5ZQV and Paris VK5FPAR from AHARS.

The core operating team consisted of Theo VK5MTM, Andrew VK5AKH, Grant VK5GR, Mark VK5QI, Chris VK5FR, Matt VK5ZM and Paul VK5PH. Construction assistance was provided by Kym VK5FJ, Dennis VK5FDEN and Irene with catering provided by Sharon VK5FSAW. It was  great to see so many members braving the freezing conditions to make their way up the mountain to support the event. Special thanks to Andrew and Mark who also took on towing the rented port-a-loo up to the site.


Preparations began the week before when the first antenna was erected and tested. Paul, Gerard, Mark and Grant erected the 80/40m crossed inverted V antenna and tuned it in horrific wind conditions the previous Saturday (with winds gusting at 50-70km/h). That feat achieved meant that the following weekend things would go more smoothly (or so we thought).

The Friday night before the event saw Chris VK5FR and Grant VK5GR pack the station trailer ready for a 6.30am departure the next day. A huge thanks to Chris for his help.

On Saturday VK5GR, VK5FSAW and their daughter headed out along with VK5QI, VK5FR, VK5MTM, VK5ZQV and VK5PH and arrived on site around 7.30am. The first order of business was to erect the pre-tuned 40/80 dipoles into the air and then build the station. The weather hadn’t improved much over the previous week with conditions still somewhat blustery with rain and biting cold thrown in for good measure.

80/40m crossed inverted V dipoles on a 10m fibre glass mast

Once 40 and 80m was complete, the team turned their attention to the 160m antenna. This antenna was the same one VK5GR took to Vanuatu earlier in the year (that at the time he was able to put up single handed). This time, with the wind, rain, slush, mud and cold it was a very different prospect with numerous false starts and growing frustration as we raced against the clock and the weather. After about 90 minutes the first attempt was shelved as the weather closed in. The crew retreated inside the main shed to complete the setup of the station and get ready at least for 40/80 at the start of the contest. The team planned on returning to the 160m antenna project in the afternoon once the contest was running.

By a fortuitous mis-calculation, the team thought it started at 11.30am local and had completed preparations by 11.00am. This was fortunate as then the heavens opened. Down came the hail and sleet, up came the wind and boom went the thunder as antennas were hastily unplugged. It was as though someone didn’t like the teams presence on the hill. The temperature dropped even lower reaching 2 degrees Celsius at midday and the wind chill climbed. The thunder passed by 11.20am so cautiously the antennas were reconnected, only to be met with S7-9 hail static. Finally the worst of the weather passed and things settled down for the expected start at 11.30am. The clock clicked over and VK5ARG started calling CQ – only to see no one else on the band. A hastily recheck of the rules and the mistake was realized. Phew – three was another hour available to further preparations around the site.

The final bugs were worked out of the software system and some tidy up completed before finally opening on time at 0300z (12:30pm).

Mark VK5QI operating VK5ARG

By 0500z (2.30pm) the weather cleared enough that a second attempt at 160m was made. It has to be said that if it wasn’t for the calm arrival of Kim VK5FJ, VK5ARG may not have been heard on top band this contest! Finally, however, the inverted L was rasied into the air and tuned successfully. VK5GR was very happy to see it tune up with a 1.4:1 VSWR around 1840kHz with about 40kHz of bandwidth. It later was proved to work extremely well despite the horrible QRN (storm static) that was to descend across the low bands later that night (due to a large thunderstorm in the Tasman sea).

160m Inverted L built on a 12m Spiderbeam fibre glass pole (8x25m radials)

Back a the operating table, the station itself consisted of an Electaft K3S Transceiver, with a KPA500 Linear and a KAT500 tuner (needed for the CW section of 80m). The logging and CW keying was provided using N1MM software with a Microham Keyer II. All up a very capable station (with one niggle with a SW fault with the voice keyer on the K3S which is being investigated further).

As night fell, Paul VK5PH fired up the BBQ and all the operators were treated to a great meal thanks to the catering planning and shopping of Sharon VK5FSAW. Operators kept rotating to keep everyone fresh and the contacts rolled into the logs. Since the plan was to run for the full 24hrs, Paul VK5PH took the first shift in the graveyard zone (2200pm-0300am). Grant and Andrew then took over for 0300-0700 just as the temperature fell even further…

Overall, the bulk of the contacts were made on 160 and 80m at night and 40m during the day, with a small number of VK6 and VK4 stations on 20m. Nothing was seen on 15 or 10m despite repeated spot checks and the odd CQ call. None the less, the tally continued to rise, with a final score of over 530 contacts and 880 points. Most importantly, everyone who came had a lot of fun, despite the cold temperatures and the weather.

Finally, a big thank you to everyone from AREG and AHARS who participated and in particular a huge thank you to all of the amateurs across Australia and New Zealand who took part! VK5ARG looks forward to running in the RD Contest yet again in 2019!

(Photos thanks to Mark VK5QI)

AREG to host an Amateur Radio exam session – Saturday Sept 8th

The Amateur Radio Experimenters Group is arranging for a round of Amateur Radio license examinations to be held at the Fulham Community Centre, Phelps Court, Fulham on Saturday 8th September starting at 9.00am.

For those members (and non members) wishing to upgrade their current Standard or Advanced license, or you wish to sit one of these licenses directly (no need to have passed a lower grade – you can directly sit for any license level in Australia)  we need to know by COB Thursday 16th (this week!) so we can arrange for exam papers to be ordered and have them arrive on time.

Foundation License training and exams will also be held. Registrations also need to be completed before Thursday 16th August. Those wishing to sit the foundation license should obtain a copy of the foundation license manual beforehand if they haven’t already done so, and start studying. Come along to the AREG club meeting this Friday (7.45pm) to discuss how to prepare for the exam with the organizers.

Places are limited (unfortunately) for the Foundation license due to the nature of the training so get in quick. If the course fills up, AREG will plan another exam day later in the year.

Costs to sit the exam will be advised later this week (pending the committee meeting). We look forward to seeing new faces join this amazing hobby.

You can email us to register your interest to vk5arg (at) areg.org.au