Technical specifications for the Trimble SPS461 Modular GPS Heading Receiver, including dimensions, power, performance and regulatory approvals.
The Trimble SPS461 Modular GPS Heading Receiver is a compact, rugged device designed for high‑precision heading and positioning applications. It supports multiple GNSS constellations, RTK, OmniSTAR and MSK Beacon options, and can be powered by internal battery, external DC or Power over Ethernet.
The document lists detailed mechanical, electrical and environmental specifications, antenna options, communication interfaces and regulatory compliance information, helping users select the correct configuration and understand performance limits.
| Dimensions (L × W × D) | 24 cm × 12 cm × 5 cm |
|---|---|
| Weight (receiver only) | 1.22 kg |
| Operating Temperature Range | -40 °C to +65 °C |
| IP Rating | IP67 (submersion to 1 m) |
| Power Input (external) | 11 V DC to 28 V DC, PoE 44 V DC to 57 V DC |
| Power Consumption (rover mode) | 6.0 W |
| Frequency Range (450 MHz) | 283.5–325.0 kHz |
| Horizontal Accuracy (RTK) | ±0.25 m + 1 ppm RMS |
The receiver operates from –40 °C to +65 °C.
The receiver is rated IP67, capable of submersion to a depth of 1 m and protected against dust.
Two antennas must be connected, and at least one must be a GA530 for MSK Beacon signal reception.