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SIRIO CX-4-68 - 4M BASE ANTENNA (68-73MHz)

SKU:
56-710

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SIRIO CX-4-68 - 4M BASE ANTENNA (68-73MHz)
SKU:
56-710
Category:
Vertical Antennas
Manufacturer:
Sirio

Quality 3/4 wave coaxial J-pole type 4 Metre, Amateur Band, base antenna, designed to work between 68 and 73 Mhz

£59.99

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1 Reviews


The Sirio CX-4-68 is a 4M base antenna, this one is designed to work between 68 and 73MHz.


Key Features:


  • Base station antenna, Mono-band

  • Low-gain, Omnidirectional

  • Protection from static discharges DC-Ground

  • Made of aluminium alloy 6063 T-832


Electronic Data:


  • Type: 3/4λ coaxial J-pole

  • Frequency range: tunable 68...73 MHz

  • Impedance: 50Ω

  • Radiation (H-plane): 360° omnidirectional

  • Radiation (E-plane): beamwidth @ -3 dB = 60°

  • Radiation angle: 3°


  • Polarization: linear vertical


  • Gain: 2dBd - 4.15 dBi

  • Bandwidth @ SWR: ≤1.5 ≥ 1.7 MHz @ 68 MHz

  • SWR. @ res. freq.: ≤ 1.2

  • Max. Power (CW) @ 30°C: 500 Watts

  • Grounding protection: All metal parts are DC-grounded, the inner conductor shows a DC short

  • Connector: UHF-female


Mechanical Data:


  • 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 gr

  • Mounting mast: Ø 35-42 mm

Bar Code/EAN:
5056109201874
MPN:
No
Sirio 4 meter antenna
Rating: 
Hi there these antennas work really well, I think they have 1 o2 db gain over a dipole, the biggest problem with them is water ingress, you have to really go overboard with waterproofing them, you will need a lot of self amalgamating tape and some liquid glue, araldite and plastic tale...there are few U tube clips on it but one by Ray G4 something in Sussex...good luck and keep the water out...there is a good article from a PE station on it, worth looking at...from Fred g4vvq Review by Fredboy / (Posted on 01/05/2020)

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