Hemisphere Launches Noise-Resistant GPS Antenna

Hemisphere GPS has introduced a new GPS antenna, the A21, designed to reduce the effects of interference from radios, transmitters, and other peripheral electronic equipment.

Hemisphere GPS has introduced a new GPS antenna, the A21, designed to reduce the effects of interference from radios, transmitters, and other peripheral electronic equipment.

Agricultural vehicles and equipment, including aircraft, typically generate electrical “noise” that can compromise antenna performance. According to the company, the A21 Antenna improves performance under these conditions by using incorporating a metal base, lower profile, improved left hand circular polarization (LHCP) rejection, and the ability to filter out an additional 30 decibels of radio band frequencies.

The new antenna will track GPS, satellite-based augmentation systems (WAAS, EGNOS, and so forth) and OmniSTAR L-band signals. The A21 Antenna also features a TNC connector, which has a threaded coupling interface to ensure a secure connection.

The A21 antenna will begin shipping in May 2009 and will be included in all Hemisphere GPS Air M3, Flying Flagman, and LiteStar II GPS guidance systems. Current Hemisphere GPS Air GLA-3 antenna owners can also upgrade to the new A21 antenna, which features the same mounting footprint as previous Hemisphere GPS air antennas.

The A21 will be incorporated into additional Hemisphere products in the future.

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