SIRIO CX-440 (440-455MHz) 3/4 Wave J-Pole Antenna - Radioworld UK
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Sirio Antennas – CB, Amateur & Professional Radio Solutions

SIRIO CX-440 (440–455MHz) 3/4 Wave J-Pole Antenna – N-Female Connector

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£34.96
(£29.13 exc. VAT)
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This antenna features a 3/4 Wave Coax J-Pole design.
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Product code: 11-645
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Item CostFinance OptionDepositMonthly PaymentsTotal Cost
£34.96
12 Months 14.9% APR
£3.50
£3.01
£39.64
£34.96
18 Months 14.9% APR
£3.50
£2.01
£39.64
£34.96
24 Months 14.9% APR
£3.50
£1.51
£39.64
£34.96
36 Months 14.9% APR
£3.50
£1.00
£39.64
£34.96
48 Months 14.9% APR
£3.50
£0.75
£39.64
£34.96
12 Months 19.5% APR
£3.50
£3.13
£41.09
£34.96
18 Months 19.5% APR
£3.50
£2.09
£41.09
£34.96
24 Months 19.5% APR
£3.50
£1.57
£41.09
£34.96
36 Months 19.5% APR
£3.50
£1.04
£41.09
£34.96
48 Months 19.5% APR
£3.50
£0.78
£41.09

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SIRIO CX-440 (440-455MHz) 3/4 Wave J-Pole Antenna - Radioworld UK

SIRIO CX-440 (440–455MHz) 3/4 Wave J-Pole Antenna – N-Female Connector


The SIRIO CX-440 (440–455 MHz) 3/4-Wave J-Pole Antenna is engineered for reliable communication and consistent performance across UHF bands. Designed with precision and durability, this antenna is an excellent choice for both amateur enthusiasts and professional operators.

  • Frequency Range: 440–455 MHz

  • Design: 3/4 Wave Coax J-Pole with Gamma Match feed system

  • Impedance: 50 Ohms – compatible with a wide range of systems

  • Radiation Pattern: Omnidirectional with 60° beam width for broad coverage

  • Gain: 2 dBd to 4.15 dBi for dependable signal strength

  • Bandwidth: 33.5 MHz at SWR 2:1

  • Power Handling: Up to 200 Watts

Features & Benefits

  • Easy Integration: Equipped with an N-female base connector for straightforward setup.

  • Durable Build: Wind load resistance of 25 N at speeds up to 180 km/h ensures stability in harsh conditions.

  • Compact & Lightweight: With a height of 625 mm and a weight of only 450 g, installation is simple.

  • Versatile Mounting: Fits masts from 35–42 mm diameter.

  • Vertical Polarisation: Optimised for precise and consistent communication.

Why Choose the SIRIO CX-440?

Whether you’re setting up a base station or enhancing your mobile communication system, the CX-440 delivers reliable performance, wide bandwidth, and rugged durability. It’s a practical, high-quality solution for anyone seeking strong, stable signals in demanding environments.

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