Central Ohio
Radio Enthusiasts

Central Ohio Radio Enthusiasts—CORE—is an informal community for anyone enthusiastic or curious about radio—whether you're new to radio and want to learn or you've been tinkering for years and want to share. Ham radio operators, GMRS users, Meshtastic fans, software-defined radio nerds, makers, and technical and non-technical folks are all welcome. No experience required or expected.

CORE logo

Meetings

Hang out, learn, and share

Meetings are casual gatherings where you can listen to a talk, see and share projects, and chat with other radio curious folks. Maybe you'll even want to give a talk yourself! And, of course, a trip to the pub afterwards is always on the table.

Next Meeting

Tuesday, July 7, 2026

You've Probably Never Heard of the Reticulum Network

Guy Royse W8GUY

Time 6:00–9:00 PM
Venue CGI, 570 Polaris Pkwy, Suite 200, Westerville, Ohio 43082
Finding Us Second floor, at the end of the hallway

You've Probably Never Heard of the Reticulum Network

Guy Royse W8GUY

What is the Reticulum Network? Unfortunately, no one can be told what the Matrix is. You have to see it for yourself. Nah. While Reticulum gives old school, Matrix-like vibes, the tl;dr is that it's a cryptography-based networking stack that runs over almost any hardware you can imagine—LoRa, WiFi, Ethernet, old school packet radio, and plain old serial cables. No central infrastructure. No single point of control. Mesh everything.

We'll focus on the technical details in this session. What Reticulum is, how the protocol works, how packets and routing and destinations create a self-healing mesh of encrypted and uncentralizable greatness where you own your address. We'll poke at the command-line utilities that ship with it and third-party software that runs over it. Tools like rnstatus, MeshChat, and NomadNet. And, I'll even show you some code so you can learn how to build apps of your own.

But, we're also gonna get hands-on. We'll stand up a working Reticulum network with everyone present. So bring a laptop if you want to be a node. Maybe the WiFi will work with Reticulum. Maybe not. But I'll have a couple of Ethernet switches as a backup so bring an Ethernet cable. And if you got a LoRa board? Bring that too.

When we're done, we'll have built an ad hoc mesh network right there in the room. How cool is that!

Get Involved

Join us online

Discord is the first thing to join. That's where we coordinate meetups, share projects, ask questions, and get involved. We also have a GitHub organization where we keep this website, the code and materials from past talks, and share and collaborate on projects.

If you want to reach out directly, give a talk, or get involved in organizing, drop a message to the admins on Discord or send an email.

And if you want to be notified of events and announcements, you can join our mailing list. We won't spam you and you can unsubscribe at any time. We're not looking to sell your data, just to let you know what's happening with CORE.

Discord GitHub hello@core.radio Join the mailing list

Join us on the air

CORE Simplex Frequency

Our informal simplex frequency. No repeater needed — just tune in and call out.

147.555 MHz

CORE Meshtastic Channel

Join our Meshtastic mesh network. Scan the QR code with the Meshtastic app to add the CORE channel to your node.

CORE Meshtastic channel QR code

Topics & Interests

If it involves radio, it belongs here

CORE has a fairly broad focus. If it involves radio signals, antennas, spectrum, protocols, or hardware—then we like to talk about it. Here's some of the topics our members are into:

Community Guidelines

Three rules. That's it.

We want CORE to be a place where anyone can show up, ask questions, and feel welcome. Our rules are simple:

FAQ

Questions you might have

Do I need a ham radio license to join?

Nope. CORE is open to everyone and actively seeks to be more than just a ham radio club. Licensed hams, GMRS users, Meshtastic and MeshCore enthusiasts, scanner listeners, and people who are just curious about radio are all welcome. You don't need any credentials to show up, to join the Discord server, or come to a meetup. Of course, if you want to get licensed, we'd love to help with that too.

Are there any membership fees or dues?

No. There's no membership, no dues, and no registration. You're part of the community just by showing up. If we ever need to collect money for a specific thing—say a workshop that requires materials—we'll tell you before hand.

I'm a total beginner. Will I be lost?

Maybe. But you definitely won't be made to feel dumb. And there are plenty of people to help you out. The community spans everyone from noobs to seasoned pros. Beginners asking questions is a feature, not a bug—most of us love explaining stuff.

Where do you meet?

Normally we meet at CGI in Westerville or Leading EDJE in Dublin, but some special events might be at different locations. Check the meetings section for details.

What should I bring to a meetup?

Just yourself. Maybe something to take notes with. If you have a project, gadget, or anything else you want to show off or have questions about, bring it. If you want to give a talk about something you've been working on or are passionate about, reach out on Discord or send an email and we'll get you scheduled.

I'm already in a radio club. Can I still join CORE?

100%. CORE isn't trying to replace radio clubs and, if anything, could help existing clubs by providing a more casual space for people who are be interested in radio but are intimidated by a ham club. A lot of our members are active in radio clubs and other organizations. We just fill a different niche: more informal, broader topics, and more maker and developer oriented.

How is this different from a regular ham radio club?

Traditional clubs are great, but they tend to be more formal and more narrowly focused on licensed amateur radio. CORE is deliberately informal and welcomes anyone interested in all sorts of radio technology—including GMRS, Meshtastic, SDRs, LoRa, and more. It's for makers and developers and the chronically curious. And licensed amateurs too. But there are no bylaws, no officers, no required attendance. Just people who like radio.

Can I give a talk or demo something at a meetup?

Yes, please. Talks and demos are the whole point. They don't need to be polished—a 10-minute "here's what I've been messing with" is fine. So is a 1-hour presentation on radio theory. Just mention it on Discord or email us and we'll get you on the agenda.