HARDWARE / PRODUCTUpdated 24 Jul 2026

Stensat radio beacon

StenSat Group LLC
Stensat radio beacon

The Stensat radio beacon is a small FM transmitter designed for satellites, capable of generating AX.25 UI packets at 1200 bps AFSK and 9600 bps FSK.

Typed specifications3 values

Discloses 1 of 13 fields engineers filter by in this category (category median 3).

Envelope (L×W×H)
1.75" x 3.1" x 1 "
product page
TX RF output power
0–3 W
product page
Supply voltage
5–12 V
product page

Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.

As published by the supplier6 lines, in the manufacturer's own wording
Frequency bands
2m, 70 cm
RF output power
0 to 3 watts
Operating voltage
5 to 12 volts
Data interface
UART at 38.4 Kbits/sec
Dimensions
1.75" x 3.1" x 1 "
Mass
About 50 grams

About

The Stensat radio beacon is a compact FM transmitter specifically engineered for satellite applications. It supports the generation of AX.25 Unnumbered Information (UI) packets, offering data rates of 1200 bps using AFSK modulation and 9600 bps with FSK modulation. The 9600 bps FSK signal is designed to be compatible with G3RUH modulation standards. The transmitter features an adjustable RF output power, ranging from 0 to 3 watts, and operates efficiently from a single power supply providing 5 to 12 volts. Its data interface is a UART, supporting a speed of 38.4 Kbits/sec. The beacon has a compact form factor, measuring 1.75″ x 3.1″ x 1″, and is lightweight, with a mass of approximately 50 grams. This radio beacon has a flight heritage, having been successfully deployed on several CubeSats.

Documentation

Need the full ICD, test reports or a specific revision? Ask the supplier directly.

Source: www.stensat.org ↗

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