Sirio CX 440 UHF 440-455MHz 3/4 Wave J-Pole Base Antenna

The Sirio CX 440 is a professional UHF base-station antenna covering 440-455MHz. It uses a 3/4-wave coaxial J-pole design with omnidirectional radiation and vertical polarisation, making it suitable for fixed UHF radio systems operating within its specified frequency range.The CX 440 is factory set for 440-455MHz at SWR ≤1.5 and requires no tuning. Sirio specifies 0dBd / 2.15dBi gain, 250W CW maximum power, a 50-ohm impedance and an N-female connector. The antenna is DC-grounded for static protection and designed for mast installation.Features 440-455MHz UHF frequency range 3/4-wave coaxial J-pole design No tuning required Omnidirectional radiation pattern Linear vertical polarisation 0dBd / 2.15dBi gain 250W maximum power (CW) 50-ohm impedance DC-grounded construction for static protection N-female antenna connector Designed for mast mounting Technical Specifications Manufacturer: Sirio Model: CX 440 Sirio Product Number: 2102701.00 Supplier SKU: 11-645 Antenna Type: 3/4-wave coaxial J-pole Frequency Range: 440-455MHz @ SWR ≤1.5 Tuning: No tuning required Impedance: 50 ohms Radiation: Omnidirectional Polarisation: Linear vertical Gain: 0dBd / 2.15dBi Maximum Power: 250W CW Grounding Protection: DC-Ground Connector: N-female Height: Approx. 590mm Weight: Approx. 540g Mounting: On-mast Mast Diameter: 35-42mm Materials: Aluminium, brass, stainless steel and nylon Package Contents1 x Sirio CX 440 antennaImportant: This antenna is intended for radio systems operating within the 440-455MHz range. Users are responsible for ensuring that their transmitting equipment, frequency use and installation comply with applicable licensing and regulatory requirements.