VHF Offset Dual Dipole Array, 2 x 5dBd, 136-174MHz

These high performance VHF dipole offset arrays are ideal for use when a cardioid pattern is required. The arrays feature high gain, low noise performance and enhanced null fill coverage with typical cardioid coverage characteristics.

SKU: OA2020-41-DIN Category:

These antennas offer industry-leading PIM ratings, essential for the latest digital radio systems. All welded alodined aluminum construction and new fabrication techniques in both the harness and dipole sections have proven to minimize intermodulation and noise generated within the antennas. The entire array rests at ground potential and offers the ultimate in lightning resistant antennas.

OA series arrays have an almost full 180° horizontal beamwidth. This eliminates the possibility of fading at the extremities of the target coverage area. Antenna gain is approximately unity at the rear of the antenna.

As would be expected from a cardioid array, the vertical beamwidth is slightly greater than its BA (omnidirectional) or EA (elliptical) pattern counterparts.

OA series arrays feature the same solid construction as the BA and EA Series. The folded dipoles utilize an internal phasing harness in stable, PTFE based double-shielded coaxial cable with PE jacket for optimum weatherproofing. The offset arrays incorporate extensive sidelobe suppression, null fill, and power input levels of 750 watts continuous.

• High gain offset (cardioid) pattern.

• Operate over entire 136-174 MHz VHF band without tuning or adjustment


Nominal Gain dBd 2 x 5
Frequency MHz 136 – 174
Tunable Bandwidth Entire band
VSWR (Return Loss) <1.5 :1 (14dB)
Nominal Impedance Ω 50
Downtilt Not offered
Vertical Beamwidth 35°
Horizontal Beamwidth 178°
Input Power (Watts) 750
Passive IM 3rd order (2x20W) dBc -150
in else

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Shipping Weight (lbs.) 250
Shipping Dims (inches) 146x12x21