There are five hardware platforms that support different nodes:
- NucleoCC2. An off the shelf evaluation board that supports mode A, but is limited in output power. Has a built-in debugger that can be used for programming and software development. Available from electronic distributors.
- Mini Node. An end-user device that attaches to a Pi Zero host processor, delivers a full +20dBm output, has limited debugging capability and is field upgradeable.
- Power Node. An upgraded version of the mini-node for outdoor use that has a wired ethernet controller, with POE, and an RF power amplifier that delivers 5W to an antenna.
- TNC/Supernode. A Terminal node controller for mode B, which can run standalone when connected to a PC with a USB connection, or as a Pi HAT. An optional external modem can implement modes A and C. Can also be used to upgrade repeater systems to provide a data mode, and has a built-in audio path for AllstarLink, and a custom driver. Supports up to 2 radios.
| Platform | Processor | Host | Mode A | Mode B | Mode C |
|---|---|---|---|---|---|
| Nucleo CC2 | STM32WL33 | n/a | Built in with Max +14dBm | n/a | n/a |
| Mini Node | STM32WL33 | Pi Zero | Built in with Max +20dBm | n/a | n/a |
| Power Node | STM32WL33 | Pi Zero | 5W output | n/a | n/a |
| TNC Supernode | STM32F722 FPGA | PC or Raspberry Pi | External | Included | External |
Mini Node
The first mini-node has been sold out, a second generation is in development that will be available in Q2 of 2026. This version is similar in most aspects, but adds a wired ethernet connector and power supply, and incorporates modifications that were made to the earlier module. It uses the same power injector as before.
Power Node
This node is realized on a 3-board stack and external power amplifier. It can be encased in PVC tubing to keep the cost down, using a 3D printed base to hold the boards and tubing which can be obtained from any hardware store. Any compatible antenna can be used, or a coaxial collinear can be fabricated from RG58 coax and is easy to build. A conceptual drawing of the node is below.
The amplifier will increase the power output to +37dBm, and the antenna gain will increase it yet again to +46, or approximately 50W EIRP. Based on the free space formula, this should give it a range of over 25 Km (16 mi).
Watch for future announcements on this site.
Supernode & TNC
The supernode and TNC modules are the next generation, currently in the development phase and is planned to be released in Q4 of 2026.
Getting Started
To get started with the mini or power node, please visit the getting started page.