Author: webdev

Thanks to WICEN and Arno VK5ZAR here is an update of the VK5 Repeaters. 

Last Friday Nick, accompanied by Col VK5HCF, presented a box of craft beer to Brett Pittard, the proprietor of T.D.R.S. Tech. for his long time, (and ongoing), support by providing our Group with first class internet access free of charge.

Brett does this in order to honour the memory of his Dad, Phil, VK5HAM. (S.K.) who was a prominent member of the club a few years ago. Phil was an accomplished musician, a tech wizard and a man possessed of a very sharp wit. He contributed a great deal to the club over many years and is sorely missed.
Thank you Brett.

Now in testing mode at The Bluff and performing well.

Here are some details provided by Peter VK5BE.

A highlight of our meeting was the presentation of awards.

The budget was approved with the addition of an amount of $8000 for possible work at VK5RBT Willalooka, a possible move for VK5RKN at Mt Benson to a site 2km south and a possible new site north of Kingston (near Taratap) to improve coverage along the Coorong.

Many reports were provided at the meeting and Secretary Col has added these to our Members’ pages.

On Saturday 19-4-25 Norbert VK5MQ, Tom VK5NFT and John VK5DJ travelled to The Bluff between Millicent and Mt Gambier to continue the development of the VK5RMG site.

The low voltage distribution had been temporarily wired to enable operation of the site. Norbert’s aim was to achieve a system of sub mains and increased wire size to minimise voltage drop now that the site was powered by our 800W solar system.
Tom was able to assist Norbert while John supervised from the chair and maintained discipline 🙂

Power distribution was completed to our two electricians’ satisfaction. The solar inverter, battery and related parts formed the main components of the power supply and branching from this were the two sub mains – one going to the two metre linked system and the other to the UHF C4FM/FM repeater cabinet. All three cabinets and units were fitted with circuit breakers to enable individual cabinet and repeater isolation from the battery.

The solar charge (voltage and current) to the battery, may be monitored remotely through the Internet. Because the equipment supplies are fed directly from the battery our remote system does not show the load voltage and current. This can be approximated by knowing that for a fully charged battery the  charge current approximates the load current. Current indications suggest that maximum voltage drop in the fully transmitting state is <0.2V due to the heavy cable in use.

Norbert installed an N-type connector to the link antenna to Naracoorte while Tom installed a dry powder extinguisher. Thanks Norbert and Tom, jobs well done.

In the near future Peter and Nick will replace the link antenna at Naracoorte and we should then have the Willalooka/Naracoorte branch working again.

In the coming weeks we will install a low voltage detector (not shown). Its purpose it to determine if battery volts have become dangerously low and if so turn on the battery charger (see 4 meters in right hand cabinet). On current evidence this may be required mid winter only. In addition, the temporary link antenna to Naracoorte will be replaced with a more sturdy yagi.

On the weekend of 3/4 May 2025, SERG supported the Generations in Jazz Festival near Mt Gambier. The Festival involves about 4000 students in music competitions and has been held for many years, growing ever stronger. Trumpeter/Musician James Morrison was an important catalyst in promoting and supporting the event, especially in its early days. It started small in 1987 and was supported by the Secondary Schools of the Lower South East. More schools wanted to be involved and it has now grown into a huge event drawing from schools across South Australia and Victoria.

Here’s an extract from the GIJ website

Mount Gambier, in South Australia’s Limestone Coast, is Australia’s hotspot for this high-energy sound – largely thanks to a unique annual event called Generations in Jazz (GIJ).​

Established in 1987, this spectacular gathering on the outskirts of the city, made famous for its Blue Lake, not only attracts the jazz legends of today but also the bright stars of tomorrow.

​Generations in Jazz holds a special place in the jazz culture of Australia, where one generation of brilliant musicians inspires the next, and aspiring musicians get a taste of life as professional musicians. It’s where like-minded individuals gather to learn from each other, study, and perform.

The South East Radio Group (SERG) provides the communications for the event and this is facilitated by the addition of our portable repeater (VK5SR) that enables excellent signals across the very large site. The members of SERG fulfill an important coordination of activities but also a safety umbrella in the event of unforeseen happenings.

All those handhelds are to various places on the grounds, Kate has to manage all that at once. Maxwell VK5AC looking on in awe at the UHF DMR handsets. The SERG operators on 2M had the benefit of strong signals and the headsets.

Headsets were mandatory for those operators in the tents as the noise was huge.

Photos courtesy of Greg VK5ZGY and Tom VK5NFT

Last Friday 28/3/25, Kate  VK5FKLY and Tom VK5NFT did some work at VK5RSE Mount Graham.

They delivered the phasing harness for the new antenna and short lengths of cable to the concrete bunker at Mt Graham and to their surprise were overwhelmed with the lady bugs. A variety that lives in the close by forest pine trees.

Later the same day in the evening Kate and Tom went back to Mt Graham to remove the bugs. Kate vacuumed up a large amount while Tom repaired and filled in where they had been coming in.

Hopefully that has slowed them down from gaining entry into the repeater hut.

Tom also attended to some weeds at the base of the door as they prevented the door from opening. He also stored the loose screws etc that were scattered on the cabinet in a plastic container to prevent them being lost.

Some more work needs doing up there but for the moment its much better.

Thanks Tom and Kate.

The big move to another location on The Bluff was completed on 23/3/25.

A great turn out of helpers attended, all contributing in some way.

The new location is now running entirely on solar power. This will save nearly $1000/year in power costs. We have a wonderful new sponsor in the form of LimeFM, they’ve provided the space on the tower and the use of their battery room for our equipment in exchange for the maintenance of their equipment and solar system. We both benefit, we’re both winners.

A few small matters to tidy up e.g. improved DC distribution in the hands of Norbert VK5MQ and some antenna cable work by Peter VK5BE will be done over the next week or so. At present the 70cm link to Naracoorte is disconnected due to some work to be done on the connector and shortening of the heliax.

It’s a great result and due to some shortening of cables we seem to have also improved the coverage a little – a great bonus.