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UHF Offset Dipole Array 400-520MHz - 5 dBd

OA20-67

Offset arrays are directional antennas for use when a base station is at one end of the coverage area. These new arrays feature improved gains, low noise performance and enhanced null fill coverage in an array with typical cardioid coverage characteristics.

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OA20-67

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  • OA20-67
The OA20-67 Series arrays feature the same solid construction as the BA and EA series. The array utilises an internal phasing harness in PTFE based double screened coaxial cable with polyethylene jacket to aid waterproofing and resist bird attack.

The OA Series have slightly more than 170° horizontal beamwidth, thus everything in front of the antenna is given coverage. This eliminates the possibility of fading at the extremities of the target coverage area. The level of radiation at the rear of the antenna is approximately unity gain.

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

These antennas are also offered with -3°, -5° or -8° of beamtilt, and all include extensive side lobe suppression, null fill and a power input level of 500 Watts continuous.

• Operate over entire 330-420MHz or 400-520 MHz bands
• Inverted mounting version available
• 5dBd or 9dBd gain versions available
• Hermetically sealed internal phasing harness
• Industry leading PIM ratings (-150dBc) providing low IM and low noise characteristics for optimum performance

(1) Factory pre-set downtilt may be specified on OA40 series antennas using model no. trailer - T3, -T5 or -T8
(2) Ruggedised black powder coated finish (aids in ice shedding for extreme conditions) is available on all aluminium arrays
(3) OA20 and OA40 series may be optionally supplied in all welded 316 Marine Grade Stainless steel. Dimensions vary slightly
(4) Connector termination option available of 7/16 DIN female connector using model no. trailer - DIN
Nominal Gain dBd 5
Frequency MHz 400 to 520MHz
Tunable Bandwidth Full. No tuning required
VSWR <1.5:1
Downtilt Not offered
Polarisation Vertical
Vertical Beamwidth 35°
Horizontal Beamwidth 180°
Power W 500
Passive IM 3rd Order (2x20W) dBc <-150
Construction All welded aluminium with alodined finish. See notes (2) and (3) for alternative finishes.
Length mm 2100
Weight (kg) 4.0
Termination N female with 0.5m 9142 cable tail.
Mounting Area 500mm x 48mm diam. aluminium

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