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5100A/7° Without Monitor Probes Main Beam Omni-Directional Antenna

5100A/7° Without Monitor Probes Main Beam Omni-Directional Antenna

Part Number: 500300-117

dBs 5100A/7° Without Monitor Probes Main Beam

The dBs 5100A/7° is an omni-directional broadband, 10 element, higher performance, collinear dipole phased array designed specifically for use as a Distance Measuring Equipment (DME) antenna. The main beam of radiation peaks at 7° above the horizon for improved multipath performance. It exhibits very low side lobe levels and negative angle radiation (minimizes multipath). The above-the-horizon null-filled pattern minimizes the radiated cone of silence. The antenna handles input power to 5,000 watts at standard DME pulse duty cycle and operates over its entire frequency range with an input VSWR at 50 Ω of less than 2.0:1.

This antenna provides vertically polarized, omni-directional coverage with the main beam of radiation tilted upward to minimize the effects of ground reflections.

The array is enclosed and effectively weatherproofed within a lightweight, small diameter, filament wound, and ground smooth fiberglass radome for prolonged trouble-free use under severe environmental conditions. Mounting is made by means of an integral base flange with 6 each mounting bolt holes. The RF input/output port is a Type N receptacle.

Obstruction light power is fed through the array and a provision is made for mounting an obstruction light and/or arrestor at the top of the array. Lightning rod kit, obstruction light, pipe adapter (with or without cover), and plate adapter are available option items.

The model dBs 5100A/7° DME 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 5100A/7° with Marine Option (P/N: 500300-127): The dBs 5100A/7° Marine Version antenna is an optional upgrade as well. 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 DME repair and DME refurbishment at our facility. Contact us for a quotation.


Net Dimensions and Weight: 77.8” long, 3 1/4” O.D. radome. Has top cap and base flange. 22 lbs.

Gross Dimensions and Weight: 82″x8″x8″ 38 lbs.