Alpha 4i RTK

Equipped with a full-frequency positioning antenna for all satellites, it reduces the traditional antenna diameter from 11 cm to 8 cm without losing any signal. With a high-frequency microwave radiating element and electromagnetic bandgap technology, combined with a four-feed-point phase-center design and a wide, high-gain beam, the Alpha 4i achieves instant fixed solutions even at low elevations and in complex situations.

Price

−15% · Year-end offer~~2.000 €~~ 1.700 € (excl. VAT)The offer ends on 31.12.2026

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Brochure

ALPHA 4I RTK
Download the official brochure for the full technical details.

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Weight: 380 g
Dimensions: 98×53 mm
Origin: China
Manufacturer: Alpha Surveying
Warranty: 12 months

3 Outstanding Technologies

Full-frequency positioning antenna for all satellites – 8 cm.

Equipped with a full-frequency positioning antenna for all satellites, it reduces the traditional antenna diameter from 11 cm to 8 cm, without losing any signal. With a high-frequency microwave radiating element and electromagnetic bandgap technology, combined with a four-feed-point phase-center design and a wide, high-gain beam, the Alpha 4i achieves instant fixed solutions even at low elevations and in complex situations.

Latest-Generation SoC Chip for Global Positioning

Integrated with the latest-generation NebulasIV radio-frequency base and high-precision algorithm, the newest SoC chip supports full-frequency computation algorithms for all satellites. With independent frequency-point tracking and narrowband interference protection of up to 60 dB, it continues to provide positioning even when the satellite signal is lost.

Integrated Real-Time Operating System (RTOS)

Equipped with a military-grade real-time operating system RTOS, the Alpha 4i fully meets the requirements of RTK development and is better suited to IoT application scenarios. RTOS is widely used in spacecraft, rockets, robots and other IoT devices thanks to its lower power consumption, smaller footprint and instant real-time response.

DiMap

DiMap has been significantly improved with various measurement modes that suit users’ needs. Users can view and control the data while the measurement program is running. DiMap, which provides services for RTK, is professional, intelligent and easy to use.