SpaceCommsKit Explorer · SCK-915 · Hand-assembled in Tennessee

Passing the Torch.
From OpenLST to SCK-915.

Open-source software. Proven RF heritage. Built for what's next. This isn't just another RF development kit — it's the evolution of a radio design that flew in space, made accessible to every engineer, researcher, and university.

Explore the Kit → Our Story

200+

Cumulative Years On-Orbit

915

MHz ISM Band · No License

+27

dBm TX Power

100%

Open Source Software

"The SCK-915 stands on the shoulders of the OpenLST project — the open-source radio design released by Planet Labs that inspired this entire product line. We carry that open-source spirit forward in our firmware and ground station software, while building on the foundation with a modern RF front end designed for today's supply chain and frequency landscape."

OpenLST Inspired SCK-915 Evolved Open Source Software

SpaceCommsKit Explorer · Three Configurations

Everything You Need to Start Communicating

Three kit tiers for every project stage — from single-board evaluation to full two-radio development systems. All kits include bootloader-flashed SCK-915 boards, lab AES keys, and assigned hardware IDs.

Entry · SCK-915

Single Board

$500 USD

One SCK-915 radio board with antenna, fully provisioned and ready to integrate into your project.

SCK-915 radio board (CC1110 · 915MHz)
915MHz SMA antenna
Bootloader flashed · Lab keys loaded
HWID assigned (0001 or custom)
SCK-915 User Guide + Developer Guide PDF

Order Now →

Built on Planet Labs' Open-Source Legacy

In 2018 Planet Labs open-sourced the OpenLST radio design from their Dove Earth-imaging satellite constellation. The Dove Low-Speed Transceiver accumulated over 200 cumulative years of on-orbit data across more than 150 satellites — one of the most extensively operated small satellite radio designs ever released to the public.

The SCK-915 carries that legacy forward — same proven RF architecture, modernized front end for today's supply chain, upgraded to the unlicensed 915MHz ISM band, and wrapped in a complete Windows development ecosystem that makes it accessible to engineers without a Linux build environment or ham radio license.

Our Story →

SCK-915 Key Specifications

Board	SCK-915
Frequency	915 MHz (FCC Part 15.247)
TX Power	+27 dBm
Data Rate	7.4–250 kbaud · 2-FSK + FEC
Sensitivity	−118 dBm @ 1.2 kbaud
MCU	TI CC1110
RF Front End	TI CC1190
License Required	None

Open Source Software · Proprietary Hardware

Firmware, ground station application, and Pico pipeline are fully open source on GitHub (GPLv3). The SCK-915 hardware design is proprietary SpaceCommsKit IP.

View on GitHub →

What's Included

A Complete RF Development Ecosystem

Every kit ships with the hardware, software, and documentation needed to go from unboxing to RF link in under an hour.

📡

SCK-915 Radio Board

CC1110 + CC1190 RF front end. 915MHz ISM band. +27dBm TX. Hand-assembled in Tennessee with authorized components only.

💻

Windows Ground Station

Full-featured C# .NET 8 application. Telemetry, OTA firmware updates, custom commands, file transfer. Open source on GitHub.

🛰️

OTA Firmware Updates

Update remote radio firmware over RF without physical access. AES-signed bootloader with page-level verification.

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Remote Imaging Pipeline

Proven end-to-end: capture JPEG images with an Arducam OV2640, transfer over RF, view on your PC. See the Pico Project guide.

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Fully Extensible

Custom command framework for CC1110 and Pico. Add your own opcodes, sensors, or payloads. Full firmware source on GitHub.

📋

Complete Documentation

SpaceCommsKit Explorer — SCK-915 User Guide and Developer Guide PDFs. Protocol reference, wiring diagrams, build instructions.

Included Software

A Ground Station App That
Actually Ships With the Kit

Most RF dev kits ship with a serial terminal or nothing. We ship a full Windows application — professional UI, live telemetry, OTA firmware updates, remote file management, and open source C# you can fork and extend.

OpenLST Ground Station — Files Tab · 10 files on SD card

OpenLST Ground Station Files tab showing remote SD card management over RF

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Live Telemetry

RSSI, LQI, uptime, packet counters — live every 5 seconds

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RF File Manager

Browse, download, delete files on remote SD card over RF

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OTA Firmware Flash

Build, sign, and flash firmware to remote board wirelessly

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Custom Commands

Any opcode, any payload — saved and persistent between sessions

Full App Tour → ⬇ Free Download

Quality You Can Trust

Boutique Quality.
Not Factory Volume.

Every SCK-915 board is hand-assembled and tested in Tennessee. Components are sourced exclusively from authorized distributors — Digi-Key, Mouser, or direct from the manufacturer. No clone chips. No gray market parts. Every board is tested before it ships.

Small batch production means every kit gets the attention it deserves. Boards are not conformal coated.

🇺🇸 Made in Tennessee Authorized Components Only Hand Tested

⚡

Power Requirements

These boards require a 5V DC supply — never exceed 5 volts. During RF transmission the power amplifier draws significant current. If the reboot LED illuminates during transmit, your power supply cannot deliver enough current. Use the included 5V 3A adapter.

📻

No License Required

The SCK-915 operates in the 915MHz ISM band (902-928MHz) under FCC Part 15.247 — no amateur radio license required. Ships to United States only.

Coming Soon

Next Generation
High-Speed Comms Board

We're designing a next-generation communications board for higher bandwidth applications — built on the lessons learned from the SCK-915. Same open-source software philosophy, significantly higher throughput, same extensible ground station software framework.

Be the first to know when it's ready.

// Next Gen · Status: In Design

Higher Data Rate Planned

Open Source Software Confirmed

Ground Station Compatible Confirmed

Tennessee Assembled Confirmed