The first Wednesday night of September it was standing room only in the REAST COVID-Safe clubrooms for a presentation on how to build a statewide P25 based Emergency Services radio network given by Andrew Johns VK7AJ.
Andrew covered all aspects of a P25 Network and its use within a dispatching organisation like Police, Fire and Ambulance. The topics covered included – What is it, its benefits, comparison with its competition – TETRA, services and trunking.
Andrew then went on to architecture, interfaces, voice & data calls, encryption, the future and then took a look at the local environment.
A huge thank you to Andrew Johns and the respective organisations for the presentation.
Our second whole of club virtual gathering was a focus on Digital Mobile Radio with Scott VK7HSE.
Scott focused on the Radioddity GD77 handheld which is very popular in Southern Tasmania. Scott started with a short recap on DMR terminology then dived into exploring Roger Clarke’s OpenGD77 firmware and the features of this firmware enhancement.
This firmware update sits on top of the normal GD77 Firmware and provides many more features and the ability to download the user database for your area which then presents the callers callsign instead of their DMR identity number.
Scott took the audience through where to get the firmware update from GITHUB and then how to load the firmware on your GD77. Some of the features of the loading software were also covered.
The above code plug has been prepared by Scott VK7HSE. This code plug is offered without any warranty or liability from both REAST and Scott. You may use at your own risk. Please be aware you will need to update personal details in the codeplug before uploading to your Radio. These details will be your DMR ID and callsign. Please note this code plug will only work once the GD77 has been upgraded with the above firmware.
The presentation was recorded and can be found on the REAST YouTube Channel at:
On Wednesday, REAST repeater officer Damien Styles VK7SD commissioned the new Yaesu DR-1X digital repeater much to the excitement of the gathering of people at the Wednesday evening experimenters group. While the repeater was purchased some time ago, it has only been in the last couple of weeks that frequencies have been allocated by the ACMA for it’s usage.
The Yaesu DR-1X is capable of both analogue and C4FM digital voice and automatically switching between the two modes. Soon an additional module will be acquired to provide DMR, DSTAR and p25 digital voice capabilities.
This repeater is on air right now, with an output frequency 438.675Mhz with a 7Mhz negative offset for the input on 431.675Mhz.
Our repeater officer would be most interested to hear signal reports from you. If you are able to access the repeater, please let Damian know by emailing [email protected]!
In recent months an interesting phenomena has been occurring on Wednesday evenings at the REAST clubrooms. More and more you see one or more members huddled around a radios while pointing Yagi antennas at the sky and gently bobbing the antennas around as if they were fly fishing. Irrespective of the mean comments that these members may have gone a bit batty, there is indeed increased interest in making contacts via a number of orbiting satellites as they orbit the Earth.
Interest started growing around August with Larry VK7WLH bringing allow his hand held Arrow Antenna for Low Earth Orbit (LEO). This piqued the interest of several members and soon saw the purchase of more LEO type Yagis to work the Satellites. Wednesday nights have been largely spent trying to work out the optimum passes for the most well known satellites and then trying to hear the Beacon, or more recently establish a 2-way contact with other operators through the satellite. Below we have a video of Justin VK7TW listening for satellite beacons:
Are you interested is working the ‘birds? got to get some satellite satisfaction? Why not come up to one of our Wednesday night meetings to find out more, or visit the AMSAT Australia website for even more information and signing up to their mail list.
Thursday night saw a good group at the front door of the ABC next to the Railway Roundabout and we were welcomed by Damien VK7SD and Alan VK7KAD who were our fantastic and very knowable hosts for the night.
We started in one of the radio studios with producer Dave who took the group through the preparation of radio segments using the various tools that are used to edit and queue radio promotional segments around Australia. Thanks Dave.