The next generation SpaceCommsKit board — AES-128-CCM encrypted 2.4GHz RF, CCSDS Space Packet Protocol, over-air firmware updates in under 25 seconds, and a drop-in upgrade path from SCK-915. Two hardware variants: Dev (SCK-915 footprint) and CubeSat (PC-104).
The SCK-2400 comes in two hardware variants sharing identical firmware and the same ground station software. Pick the form factor that fits your mission.
Drop-in upgrade from SCK-915. Same PCB footprint, same mounting holes, same 3D-printed stands and SCK-PBL-1 payload connections. Swap the board, update the firmware, keep everything else.
| Parameter | Value |
|---|---|
| Footprint | SCK-915 compatible (drop-in replacement) |
| Microcontroller | TI CC2652P1FRGZ |
| RF Frequency | 2.4GHz ISM band |
| TX Power | +20 dBm |
| Modulation | 2-GFSK 250 kbps |
| Protocol | CCSDS Space Packet |
| Encryption | AES-128-CCM per-packet |
| OAD | Over-air firmware update in <25s |
| Payload interface | 115200 baud UART — Pico bridge |
PC-104 compliant form factor for CubeSat integrations. RF sections only — no onboard GPS or sensors. Two Samtec ESQ-126-12-G-D connectors (104 pins total) for PC-104 stack compatibility.
| Parameter | Value |
|---|---|
| Footprint | PC-104 compliant |
| Microcontroller | TI CC2652P1FRGZ |
| RF Frequency | 2.4GHz ISM band |
| TX Power | +20 dBm |
| Modulation | 2-GFSK 250 kbps |
| Protocol | CCSDS Space Packet |
| Encryption | AES-128-CCM per-packet |
| OAD | Over-air firmware update in <25s |
| Bus connector | PC-104 (2× Samtec ESQ-126-12-G-D) |
Every feature was developed and verified during real hardware bringup — not simulated. The firmware is fully open-source.
Every RF packet is encrypted and authenticated with an 8-byte MAC. Unverified packets are silently dropped. Pure software implementation — no TI hardware accelerator dependency, runs from any RTOS task context.
The same packet framing used by real spacecraft. APID addressing lets one ground station manage multiple remote boards simultaneously. Fully documented opcode table — add your own commands in minutes.
Full ~320KB firmware images transfer over encrypted RF in under 25 seconds. BIM bootloader verifies CRC before copying — a failed or interrupted OAD never bricks the board. The previous firmware always boots as fallback.
Non-volatile reset counter in internal flash. Five consecutive resets without a clean 5-minute run triggers beacon-only safe mode — protecting mission telemetry even through crash loops. Ground station clears it with one click.
Transparent CCSDS↔ESP bridge to the SCK-PBL-1 payload board. GPS, barometric altitude, temperature, camera, and SD card — all accessible over encrypted RF. The Pico's firmware is unchanged from SCK-915.
Live GPS tracking on the map tab with automatic 10-second polling. Baro altitude, temperature, and satellite fix status. Flight recording and KML export for Google Earth. Replay mode for post-mission analysis.
The encryption boundary sits between the USB cable and the RF link. The ground station app sends plaintext — the GS board handles all cryptography transparently.
Three AES-128 keys per board pair. Generated in the Ground Station Provision tab with one click. Automatically patched into firmware before each build — no manual file editing. Keys are gitignored and never leave your machine.
The complete firmware source is on GitHub. CCSDS framing, AES-128-CCM crypto, OAD transport, reset counter, and Pico bridge are all documented and extensible. Add your own opcodes in minutes.
Every kit ships bootloader-flashed, provisioned with a unique key set, and verified on the bench before leaving Tennessee.
SCK-2400 Mini Kit — two boards, stands, antennas, cables
SCK-2400 — PC-104 form factor with connector detail
Already running SCK-915? The SCK-2400 Mini variant is a drop-in replacement for your existing setup.
| Feature | SCK-915 | SCK-2400 |
|---|---|---|
| RF Band | 915 MHz | 2.4 GHz |
| Protocol | OpenLST | CCSDS Space Packet |
| Encryption | AES-128-CTR (key in bootloader) | AES-128-CCM per-packet, 8-byte MAC |
| Data Rate | 7.4 kbaud | 250 kbps |
| TX Power | +27 dBm | +20 dBm |
| Microcontroller | CC1110 · 26MHz · 32KB flash | CC2652P · 48MHz · 352KB flash |
| OAD update time | ~40 seconds | <25 seconds |
| RTOS | OpenLST bare-metal | TI-RTOS7 |
| Pico payload | ✓ Same SCK-PBL-1 | ✓ Same SCK-PBL-1 — zero Pico firmware changes |
| Ground station | SCK Ground Station (SCK-915 mode) | SCK Ground Station (SCK-2400 mode) |
| Dev footprint | 50 × 60 mm | Same (drop-in) |
| CubeSat variant | — | PC-104 compliant |
| Reset counter / safe mode | — | ✓ NVS-backed, ground-clearable |
| Firmware source | Open source (GitHub) | Open source (GitHub) |
The SCK-2400 firmware is in active bringup on SCK-2400 Mini hardware — encrypted RF, OAD, GPS, and safe mode are all verified working. Production PCB design is in progress. Sign up to be notified when kits are available.
Two boards · SCK-915 footprint · Drop-in for existing stands and SCK-PBL-1 · Encrypted RF · OAD · Pico bridge
Sign up below to be notified at launch
Single board · PC-104 compliant · RF sections only · Same firmware and ground station · Samtec ESQ-126-12-G-D connectors
Sign up below to be notified at launch
Questions before ordering? info@spacecommskit.com · Volume or university pricing available on request.
Ships to United States only. Boards are hand-assembled in Tennessee, USA.
The SCK-2400 is an experimental RF development board intended for research, experimentation, and educational use only. It is not FCC certified for commercial or consumer use. Operation is permitted under FCC Part 15.23 (Exemptions for research and development). The operator is responsible for ensuring operation does not cause harmful interference to authorized radio services. Ships to United States only.
University labs, R&D teams, and independent researchers
Engineering programs, satellite communications courses
Engineers developing RF systems and spacecraft payloads