A21/A31 Antenna

Name: A21/A31 Antenna
Brand: Hemisphere GNSS

Multi-Constellation GNSS Antennas for Precision Positioning

Hemisphere GNSS A21 / A31 Antenna is designed for precision GNSS positioning, supporting GPS, GLONASS, BeiDou, Galileo, SBAS, and L-Band signals. With advanced multi-path mitigation and 30 dB noise filtering, they ensure reliable signal tracking even in challenging environments. Housed in IP69K-rated enclosures, these antennas are ideal for use with Hemisphere GNSS Crescent® and Crescent Vector™ II receivers, providing durability and superior performance.

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	A21	A31
GNSS Reception	GPS L1, GLONASS G1, BeiDou B1, Galileo E1, SBAS, and L-band	GPS L1, GLONASS G1, BeiDou B1, Galileo E1, SBAS, L-band, and Beacon
L-Band Frequency	1.525 - 1.614 GHz	1.525 to 1.614 GHz
Beacon Frequency	-	283.5 - 325 KHz
Input Voltage	3.3 to 12 VDC	5 to 12 VDC
Input Current	24 mA, typical	50 - 60 mA
Enclosure	Aluminum base with ASA plastic top	Lexan
Dimensions	7.0 H x 13.0 D (cm) 2.9 H x 5.1 D (in)	10.4 H x 14.5 D (cm) 4.1 H x 5.7 D (in)
Weight	0.38 kg (.84 lbs)	0.73 kg (1.62 lbs)
Mount	5/8 inch female thread	1” coarse thread (5/8” adapter available)
RF Connector	TNC (straight)	TNC