Sirio VHF / UHF Vertical Antennas

$77.00

  • Base Station Antennas
  • Type: 3/4λ Coaxial J-Pole
  • Protection from Static Discharges
  • Made of Aluminium Alloy
Clear

Description

Sirio CX-4 is the 4 m basic antennas designed to work in the ranges of 68 – 73 MHz (CX-4-68), 73 – 78 MHz (CX-4-73), 78 – 83 MHz (CX-4-78), 83 – 88 MHz (CX-4-83).

Features:

  • Base station antenna, Mono-band
  • Low-gain, Omnidirectional
  • Protection from static discharges DC-Ground
  • Made of aluminium alloy 6063 T-832

Electrical Specifications:

  • Type: 3/4λ coaxial J-pole
  • Frequency range:
    • CX 4-68: tunable 68 – 73 MHz
    • CX 4-73: tunable 73 – 78 MHz
    • CX 4-78: tunable 78 – 83 MHz
    • CX 4-83: tunable 83 – 88 MHz
  • Impedance: 50 Ω
  • Radiation (H-plane): 360° omnidirectional
  • Radiation (E-plane): beamwidth @ -3 dB = 60°
  • Radiation angle: 3°
  • Polarization: linear vertical
  • Gain: 2 dBd – 4.15 dBi
  • Bandwidth @ SWR ≤1.5:
    • CX 4-68: ≥ 1.7 MHz @ 68 MHz
    • CX 4-73: ≥ 2.0 MHz @ 73 MHz
    • CX 4-78: ≥ 2.5 MHz @ 78 MHz
    • CX 4-83: ≥ 2.5 MHz @ 83 MHz
  • SWR. @ res. freq.: ≤ 1.2
  • Max. Power (CW) @ 30°C: 500 W
  • Grounding protection: All metal parts are DC-grounded, the inner conductor shows a DC short
  • Connector: UHF-female

Mechanical Specifications:

  • Materials: Aluminium, Brass, Stainless Steel, Nylon
  • Wind load / resistance: 97 N @ 150 km/h / 150 km/h
  • Wind surface: 0.08 m²
  • Height (approx): from 2700 to 3360 mm
  • Weight (approx): 1900 g
  • Mounting mast: Ø 35 – 42 mm