Dipole Arrays7170181

Cardioid array 177-186 MHz

Description

A linear array of two VHF dipole elements with phasing harness mounted on an aluminium boom. Careful attention to element phasing results in a “Cardiod” shaped radiation pattern with high F/B ratio compared to an equivalent sized Yagi antenna. Antennas of this type find use in PMR/Trunked Radio and Broadcast applications needing very high F/B performance. Produced to the highest quality standards, these robust antenna designs will insure reliable operation in harsh environmental conditions.
• Former Jaybeam brand product.

Specifications

Electrical
Frequency 177 - 186 MHz
Max. Input Power 150 W
Polarisation Vertical
3 dB Beamwidth, E-Plane 75 °
3 dB Beamwidth, H-Plane 180 °
Impedance 50 Ω
Gain 2.8 dBd (5 dBi)
VSWR < 1.5:1
Front-To-Back Ratio > 20 dB
Antistatic Protection All metal parts DC-grounded (Connector shows a DC-short)
Mechanical
Connection(s) N(f) on 3m RG213/U cable
Materials Boom, 32 mm dia. aluminium
elements, 19.1 mm dia. aluminium
balun, fully moulded enclosure
Dimensions 1810 x 750 x 110 mm (L x H x D)
Wind Load 170 N (160km/h)
Weight 4.7 kg / 10.36 lb
Mounting Bracket 3202078/68 + 3201079/00
(Ordered Separately)
Alternate Mounting Bracket 0900912/00, 0302032/68, or 0300064/00 + U-Bolts to match mounting pipe diameter
(Ordered Separately)

Diagram and Mounting

RADIATION PATTERNS

E-Plane | 182 MHz E-Plane | 182 MHz

RADIATION PATTERNS

H-Plane | 182 MHz H-Plane | 182 MHz

Ordering Designations

Model Product No. Frequency
Cardioid array 177-186 MHz 7170181 177 - 186 MHz
Accessories
Galvanised steel crossover bracket 32/50mm 0900912/00
Pressed steel cross clamp 2" x 1-1/4" (JBL73) 0302032/68
Cast aluminium cross clamp, circular 0300064/00
M8 x 50mm (2") U-Bolts (1 Pair) 4884036/00
M8 x 75mm (3") U-Bolts (1 Pair) 4884076/00
Fixed norstel / coupler clamp (cross clamp) 3202078/68
Increasing sleeve 3201079/00