VOBA-III HF Broadband Antenna 3-30 MHz 2 dBi Omni

Frequency Range: 3-30 MHz
Gain: 2 dBi
VSWR: 2:1 max
Polarization: Vertical
Pattern: Omnidirectional
Size: 61.5′ H, 315′ D

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Description
Spec Sheet

Description

Applications:

The VOBA-III antenna is suitable for skywave propagation from medium to long range circuits. This antenna design can be used for short range groundwave circuits up to approximately 100 miles, and is well suited for naval shore-to-ship communication.

Features:

The antenna is ruggedly designed and will withstand harsh environments such as high wind, ice, and snow. The broadband frequency capability does not require tuning.

Characteristics:

The antenna is designed in accordance with the U.S. Navy specifications MIL-A-28768B (EC) and MIL-A-28768/1B (EC). The antenna is a fixed station antenna which covers various frequency bands without requiring any frequency tunings or frequency adjustments.

Equipment Supplied:

Prefabricated alumoweld curtain, galvanized steel tower with built-in ladder, safety climbing equipment, guys, base insulator, embedment hardware, ground screen, antenna matching unit, and spare hardware.

Optional Equipment:

Repair kit, repair tool kit, and erection kit. Coaxial cable, connector adapters and mating adapters.

Spec Sheet

SPECIFICATIONS	PERFORMANCE
Input Connector	3-1/8″ EIA Flange
Wind Loading	125 MPH Wind, no ice 90 MPH Wind, 0.5 in. radial ice
Shipping Volume	175
Gain	2 dBi Between 0 and 15 Degrees above the horizon
Shipping Weight	2,946
Frequency Range	2.5-30 MHz
VSWR	2:1 Maximum
Power Capability	25 kW AVG/50 kW PEP, 100 kW Peak Instantaneous
Height	44 Feet
input Impedance	50 Ohms Unbalanced
Azimuth Coverage	Omnidirectional +/- 1 dB
Polarization	Vertical