Category: Radio

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Tog Hackerspace at the Phoenix Amateur Radio Club Annual Radio Rally

We are excited to announce that we will have a stand at the Phoenix Amateur Radio Club Annual Radio Rally on Sunday, February 16th, 2025. The event will take place at Coolmine Community School, Blanchardstown, Dublin 15.

This rally is a great opportunity for amateur radio enthusiasts, electronics hobbyists, and makers to come together, exchange ideas, and explore the latest in radio technology. Whether you’re a licensed operator, an SWL (shortwave listener), or just curious about the world of radio, there will be plenty to see and do.

At our stand, we’ll be showcasing some of the projects and activities from Tog Hackerspace, including:

  • Amateur Radio and SDR (Software-Defined Radio) demonstrations
  • Homebrew electronics and DIY repair projects
  • IoT and embedded systems that integrate with radio communications
  • Information on upcoming workshops and events at Tog

We’re always eager to chat about all things radio, hacking, and making—so be sure to stop by! Whether you want to discuss your latest radio setup, learn about our hackerspace, or just geek out about RF technology, we’d love to meet you.

Admission to the rally includes access to a variety of traders, exhibits, and talks from experienced operators. And of course, tea and sandwiches will be available on the day to keep everyone fueled up for a great day of radio and tech.

Mark your calendars, and we’ll see you there!

For more details on the rally, check out the Phoenix Amateur Radio Club (EI2PAR).

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If you’re interested in joining Tog Hackerspace or learning more about our events, visit www.tog.ie or drop by one of our open nights.

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Build Your Own Satellite Ground Station

Are you fascinated by space and want to learn how to receive data from satellites and weather probes? Join us in this TinyGS Station Workshop where you’ll build and program your ground station and antenna to receive data from space. This hands-on, beginner-friendly workshop is perfect for anyone interested in radio, electronics, IOT, antenna design, and space exploration.

About TinyGS: TinyGS is an open community-run network of Ground Stations distributed around the world to receive and operate LoRa satellites, weather probes and other flying objects, using cheap and versatile modules. With a TinyGS ground station, you can receive data from a variety of sources, such as CubeSats.

Continue reading “Build Your Own Satellite Ground Station”
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Build Your Own Satellite Ground Station

Are you fascinated by space and want to learn how to receive data from satellites and weather probes? Join us in this TinyGS Station Workshop where you’ll build and program your ground station and antenna to receive data from space. This hands-on, beginner-friendly workshop is perfect for anyone interested in radio, electronics, IOT, antenna design, and space exploration.

About TinyGS: TinyGS is an open community-run network of Ground Stations distributed around the world to receive and operate LoRa satellites, weather probes and other flying objects, using cheap and versatile modules. With a TinyGS ground station, you can receive data from a variety of sources, such as CubeSats.

What You’ll Learn: During the workshop, you’ll learn how to build and program a TinyGS ground station and a quarter-wave ground plane antenna. No prior experience is required, and we’ll provide all the necessary materials, tools, and equipment to guide you through the process.

Materials Provided: All necessary materials, tools, and equipment will be provided for the workshop, including a quarter-wave ground plane antenna kit, a TinyGS base station kit, and a USB cable. You don’t need to bring anything except a WiFi device(computer or phone) configure and create a Telegram account. At the end of the workshop, you’ll take home your very own TinyGS ground station and antenna. You’ll be able to use your ground station to receive data from satellites and other flying objects and explore the fascinating world of space and radio. If you have any questions or want to continue learning after the workshop, we’re here to help.

Morning Session – Sold Out

Date: Sunday 12th of November 11am to 1pm

Location: Tog Hackerspace, Unit 1B Motor City, Kylemore Road, Dublin 12, D12 CF6V

Cost: €80 plus fees. Profit from ticket sales goes to fund Tog.

Ticket Link: https://www.eventbrite.ie/e/build-your-own-satellite-ground-station-tickets-737831222047

Afternoon Session

Date: Sunday 12th of November 2pm to 4pm

Location: Tog Hackerspace, Unit 1B Motor City, Kylemore Road, Dublin 12, D12 CF6V

Cost: €80 plus fees. Profit from ticket sales goes to fund Tog.

Ticket Link: https://www.eventbrite.ie/e/build-your-own-satellite-ground-station-afternoon-session-tickets-750618739857


This event is to coincide with Science Week which runs from 12-19 of November. Events are happening all over the country. Visit scienceweek.ie for more.

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Building a TinyGS Station Workshop

Space is fun. Receiving data from space is even better.

TinyGS is an open community-run network of Ground Stations distributed around the world to receive and operate LoRa satellites, weather probes and other flying objects, using cheap and versatile modules. https://tinygs.com/

This hands-on workshop will cover building, programming and setting up your own TinyGS station.

Participants will build their very own quarter-wave ground plane antenna, and base station to take home. All they have to do is plug the box into a USB charger.

This workshop is perfect if you want to get started building your first antenna and get started in the world of radio.

No amateur radio license is required to operate the station, only if you wish to send data to space.

TinyGS workshop at EMFcamp

Event Date: Saturday 17th September 16:00 – 18:00

Event Cost: €65 plus Eventbrite fees

Max Eight Participants

Booking Link: https://www.eventbrite.ie/e/building-a-tinygs-station-tickets-410608209207

Participants are required to bring a WiFi device like a phone or laptop to configure and a Telegram account.

This workshop is facilitated by our own Jeffrey Roe and with help from Gary.

You can read more about the building a TinyGS project on our blog https://www.tog.ie/2022/02/building-a-tinygs-station/

All visitors are welcome to stay at the event of the workshop for Tog’s Open social night https://www.meetup.com/tog-dublin-hackerspace/events/286494552/

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A journey of repair – Dynatron SRX 26

Let’s go on a journey of repair with Jeffrey. We have a Dynatron radio model SRX 26. I think it’s from the 1970s. The radio came from Henry which has been in his family since it was new. Unfortunately it has been waiting on me to repair it since September 2020.

I started off by wiping all the dust I have let fall on it. It is a crazy heavy thing. The best way to start is to have a good look over the radio. The point is to find any problems with the cable and to check it is safe before ever plugging it in. It also seems to be missing its record player cartridge (the needle).

The radio lead and fuse are the next places to check. It is using an older style of plug that should be replaced at some point. The fuse and lead are fine. Now for a power-on test. the unit is not showing any signs of life.

Now to take it apart and show everyone’s favourite part the insides. There looks to be other historical repairs carried out. If you look at the above image on the left-hand side.

An internal mains fuse looks very “crusty”. After taking it out it’s clearly blown. There are also two more fuses that are blown. The type of fuse is nicely labelled on the radio but I had none in stock. A short walk down to RS and picked up a bag of replacement fuses.

It came alive! Well it turns on anyway. The next step to try and find some suitable audio leads to test the sound. I only had a headphone adaptor but soon was getting sound from the radio but with a lot of hisses.

To overcome the hiss, I attacked all the knobs with some switch cleaner. You take off all the knobs and spray in the fluid. Give the knobs a good turn, backwards and forwards to work in the cleaner.

The last job was to mount the speaker port that was loose in the cabinet. Unfortunately without that type of lead, I could not test it. 

Check out the radio in action in the video above. The radio seems to work fine with headphones. The turntable needs a cartridge but that is a job for the radio owner. If you would like to see more photos of the repair check out our gallery.

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Building a TinyGS Station

Space is fun. Receiving data from space is even better. Below is a project built by our own Jeffrey Roe.

TinyGS is an open network of Ground Stations distributed around the world to receive and operate LoRa satellites, weather probes and other flying objects, using cheap and versatile modules.

The first step of the project is to load the software onto the TTGO LoRa32 V2. The TinyGS project provides a cross-platform flashing tool. It is then a very simple program to flash the firmware onto the microcontroller. The project then makes use of a Telegram bot to set up your station, issues you a username/password. If you wish to enable data transmission to the satellite you must have an amateur radio licence.

The main motivation for this project was to try out building my own antenna. A quarter-wave ground plane antenna is a great first project for people interested in radio. It requires only a small amount of tools. A youtube video from Andreas Spiess pushed me to think this was possible.

The first step of the antenna is to know the length of the radials(the bits on the side) and the monopole(the bit coming out the top). If you go along to this website, it has a handy calculator. We are trying to build a 433 Mhz for our purpose. I started out cutting up lengths of wire that I think is used for fencing. Sanding the ends of the wires to ensure an electrical connection.

Using the insides of terminal blocks, I connected the radials to an SMA Female Chassis Panel Mount. It made the build much easier. But the holes on the panel mount are just a little too small for the screws from the terminal blocks. I drilled them out a little to make enough room.

My brother helped to make a wooden plate and a little stand for the project. This allowed our outdoor testing as seen above. The next step was to bring the project outside and see would we receive any data. I was a bit unsure how the project would work out, so I had bought two units and one commercial antenna. The plan was to set them up in the back garden to test if my first antenna was up for the challenge of receiving data from a satellite in space.

The above photo shows both units in action. The unit on the right is our homemade antenna. They are on top of my washing line, held on with clamps in my back garden. It is in an urban back garden surrounded by houses. I had to wait around an hour for the first pass of a satellite.

The above is a side by side of the data received from both ground stations. The one on the left has the commercial antenna and the one on the right is my shiny new homemade antenna. I was very proud to see it working and even picked up an extra packet in the process. The data came from a CubeSat called Norby. You can read this paper about its build.

As darkness fell, so did the experiment end. Both units have now come into the house. I am still running my homemade unit on a windowsill until I get a chance to build an enclosure for it. Another task is to test out the antenna performance with a NanoVNA tool a member has loaned me. For more project photos check out our gallery. You can view the data the station is receiving online in real-time. https://tinygs.com/station/EI7IRB_2@747769602

If you are interested in taking up Amateur Radio as a hobby come along to this webinar. Amateur Radio – A Life Long Technical Hobby. A special Engineers Week event hosted by the Electronic and Computing division in Engineers Ireland and South Dublin Radio Club. It will feature me and Adrian Connor. Join us on March 10th.