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620-D Variable Beamwidth, 35° – 210° Antenna

620-D Variable Beamwidth, 35° – 210° Antenna

Part Number: 620300-101

620-D Variable Beamwidth, 35° – 210°
dBs 620-D Variable Beamwidth

The dBs 620-D, Variable Beamwidth, is a 2 element high performance, full service, uni-directional, Automatic Dependent Surveillance-Broadcast (ADS-B) antenna. Frequency range is 978, 1030, and 1090 MHz (no adjustments or tuning required).

This uni-directional antenna has 2 active elements and other components, which produce high main lobe and horizon gain. Gain, main beam from 13.2 dB/iso min HPBW (35°) to 6.8 dB/iso at max HPBW (210°). Gain, horizon 2 dB down from main beam peak gain. The main lobe of the vertical pattern has been squinted to 10° above the horizon for improved multipath performance. The main lobe of the vertical pattern can be adjusted between 0° and +30° above the horizon upon request.

The antenna is lightweight, small, and 100% metal tubular construction making it extremely rugged.

The main RF input connector uses a Type N jack.

The model dBs 620-D Variable Beamwidth ADS-B antenna has been designed for ruggedness, lightweight, minimum size, long life, and in accordance with FAA-E-2754 and FAA-G-2100. It also exceeds the requirements of the UK CAA specification.

dBs 620-D with Marine Option (P/N: 620300-121): The dBs 620-D Marine Version antenna is an optional upgrade. The RF transmission assembly is completely sealed and weatherproofed to protect in harsh environments such as salt water, extreme humidity, wind, sand, snow, and ice. Contact our factory for more details.

dB Systems Inc. offers ADS-B/MLAT repair and ADS-B/MLAT refurbishment at our facility. Contact us for a quotation.


Net Dimensions and Weight: 24” long, 3 1/4” O.D. radome, has top and base flange, antenna width extends to a maximum of 38° when reflector wings set to 180°; 15 lbs.

Gross Dimensions and Weight: 30″ x 20″ x 20″; 40 lbs.


Inches is denoted by (“)

Outside Diameter is denoted by (O.D)

Pounds is denoted by (lbs)