Sirio CX 4-68 4m Antenna 68 - 73 MHz
SKU Part Number: CX-4-68
Quality 3/4 wave coaxial J-pole type 4 Metre, Amateur Band, base antenna, designed to work between 68 and 73 Mhz. The 4 metre (70Mhz) Amateur band is...
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£59.95 £49.96
Availability: In stock

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Quality 3/4 wave coaxial J-pole type 4 Metre, Amateur Band, base antenna, designed to work between 68 and 73 Mhz. The 4 metre (70Mhz) Amateur band is much more active now, and this antenna will give great performance.                  


  • 4 Metre Base station vertical co-linear antenna
  • Low-gain, Omnidirectional
  • Protection from static discharges DC-Ground
  • Made of aluminium alloy 6063 T-832

       Electrical Data: 

  • Type: 3/4 wave coaxial J-pole
  • Frequency range: tunable 68...73 Mhz
  • Full coverage of 4 metre Amateur Band 
  • Impedance: 50 Ohms
  • 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 1:1.5: 1.7 MHz @ 68 Mhz
  • SWR. @ res. freq.1:1.2
  • 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


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Upon receipt of goods you have 14 days to return goods however the goods must be returned in original packaging and care must have been taken with the goods you wish to return. Under distance selling regulations you are not entitled to any refund on carriage charges or modification charges made at your request.

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For repairs/replacements under manufacturer’s warranty for any item please download a ML&S return form from the link above and return to ML&S with the faulty product.

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Warranty service for items we sell is available in the U.K. only, unless otherwise noted. It is your responsibility to pay freight for returned items to the U.K. and back to you for desired warranty coverage. All of our NEW products come with a minimum 12 month warranty, (Yaesu & Icom 24 months), with up to 90 days on second-hand equipment. Items returned for service must state "returned goods for repair" on the return air waybill or U.K. import customs duties apply and will be added to your invoice. For more info about returning items please contact our customer help desk, [email protected]